RRB JE IT (CBT I) Mock Test- 4

# RRB JE IT (CBT I) Mock Test- 4

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## 100 Questions MCQ Test RRB JE Mock Test Series for Computer Science Engineering | RRB JE IT (CBT I) Mock Test- 4

RRB JE IT (CBT I) Mock Test- 4 for Railways 2023 is part of RRB JE Mock Test Series for Computer Science Engineering preparation. The RRB JE IT (CBT I) Mock Test- 4 questions and answers have been prepared according to the Railways exam syllabus.The RRB JE IT (CBT I) Mock Test- 4 MCQs are made for Railways 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for RRB JE IT (CBT I) Mock Test- 4 below.
Solutions of RRB JE IT (CBT I) Mock Test- 4 questions in English are available as part of our RRB JE Mock Test Series for Computer Science Engineering for Railways & RRB JE IT (CBT I) Mock Test- 4 solutions in Hindi for RRB JE Mock Test Series for Computer Science Engineering course. Download more important topics, notes, lectures and mock test series for Railways Exam by signing up for free. Attempt RRB JE IT (CBT I) Mock Test- 4 | 100 questions in 90 minutes | Mock test for Railways preparation | Free important questions MCQ to study RRB JE Mock Test Series for Computer Science Engineering for Railways Exam | Download free PDF with solutions
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RRB JE IT (CBT I) Mock Test- 4 - Question 1

### Walking at 6/7th of his usual speed, a man is 12 minutes late. The usual time taken by him to cover that distance is-

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 1

S1: S2 = 6 : 7

1 T :T 2 = 7 : 6 (S ⍺ 1 / T)

Difference between

T1 & T2 = 1 (7 - 6 = 1)

If 1 = 12min.

then 6 = 72 min. = 1 hrs 12min.

RRB JE IT (CBT I) Mock Test- 4 - Question 2

### In selling an article for ₹ 76, there is a profit of 52%, if it is sold for ₹ 75, then the profit percent will be.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 2

152% = 76

100% = Cost price = 76 / 152 x 100

C.P = Rs. 50

New selling price = 75

% profit = 75 - 50 / 50 x 100%

= 25 / 50 x 100% = 50%

RRB JE IT (CBT I) Mock Test- 4 - Question 3

### The lines x + 3y = 4 and 3x – y = 6 intersect the y – axis at A and B respectively. AB = ?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 3

RRB JE IT (CBT I) Mock Test- 4 - Question 4

Read the following bar graph which represents a company's manufacturing and selling(in lakh) of product from 2002 to 2008 and answer the following questions.

Approximately what is the average number of items sold for all the years together?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 4 Average = (60+55+65+50+60+80+75)/7 = 445/7 = lakh

≃ 63 lakh(Appx.)

RRB JE IT (CBT I) Mock Test- 4 - Question 5

Area of a circle is equal to the area of a rectangle having a perimeter of 100 cm and length is more than the breadth by 6 cm. What is the diameter of the circle?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 5

Let breadth = x, then length

= (x + 6)

2(x + x + 6) = 100

2x + 6 = 50

x = 22 cm

Breadth = x = 22 cm & length

= 22 + 6 = 28 cm

Area of circle = Area of rectangle ir

⇒ r2 = 22 x 28

⇒ r2 = 22 x 28 / 22 x 7 = 7 x 4 x 7

⇒ 7 x 2 = 14 cm

So, Diameter = 2r = 28 cm

RRB JE IT (CBT I) Mock Test- 4 - Question 6

Seema purchased an item for Rs.9,600 and sold it for a loss of 5 percent. From that money, she purchased another item and sold it for a gain of 5 percent. What is her overall gain/ loss?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 6

SP = 9600 x 95 / 100 = Rs. 9,120

Second S.P. = 9120 x 105 / 100 = Rs. 9,576

Loss = 9600 - 9576 = 24

RRB JE IT (CBT I) Mock Test- 4 - Question 7

A mixture of 40 litres of milk and water contains 10% water. How much water must be added to make water 20% in the new mixture?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 7

Milk =90/100 × 40 = 36 litres

water = 5 litres

5x + 20 = 40 + x

X = 5

RRB JE IT (CBT I) Mock Test- 4 - Question 8

The average weight of 8 persons increases by 2.5 kg when one person whose weight is 65 kg is replaced by a new person. What Is the weight of the new person?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 8 Total increase in weight due to addition of new persons = 2.5 × 8 = 20 kg

Weight of new person = 65 + 20 = 85 kg

RRB JE IT (CBT I) Mock Test- 4 - Question 9

Read the following bar graph which represents a company's manufacturing and selling(in lakh) of product from 2002 to 2008 and answer the following questions.

During which year the percentage of items unsold was the highest?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 9

% in 2002 = {(10 x 100) / 70}% = 14.3%;

% in 2003 = {(10 x 100) / 65}% = 15.38%;

% in 2004 = {(15 x 100) / 80}% = 18.75%;

% in 2005 = {(10 x 100) / 60}% = 16.67%;

% in 2006 = {(15 x 100) / 75}% = 20%;

% in 2007 = {(10 x 100) / 90}% = 11.11%;

and % in 2008 = {(5 x 100) / 70}% = 6.25%;

It was the highest in 2006.

RRB JE IT (CBT I) Mock Test- 4 - Question 10

Read the following bar graph which represents a company's manufacturing and selling(in lakh) of product from 2002 to 2008 and answer the following questions.

Approximately what is the average number of items unsold for all the years together?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 10

Average = (10+10+15+10+15+10+5)/7 = 75/7 lakh

≈ 1,07,000 lakh(Aprx)

RRB JE IT (CBT I) Mock Test- 4 - Question 11

A, B and C can finish a work in 8 days, 10 days and 12 days respectively. They worked together and get Rs. 740. How much will each of them will get?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 11

Given,

1 day work of A, B & C is 1 / 8, 1 / 10, 1 / 12 respectively

therefore , Their shares in money = 1/8 : 1/10 : 1/12 = 15 :12 : 10

Sum of their share = ₹740 x 15/37 = ₹300

B’s share = ₹740 x 12/37 = ₹240

C’s share = ₹740 x 10/37 = ₹200

RRB JE IT (CBT I) Mock Test- 4 - Question 12

A room 8 m long, 6 m broad and 3 m height has two windows 1 1⁄2 m × 1 m and a door 2 m × 1 1⁄2 m. Find the cost of papering the walls with paper 50 cm wide at 25 paise per meter.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 12

Area of walls = 2(Length + Breadth) x height

= 2(8 + 6) x 3 = 84m2

Area of two windows and a door = (1 ½ x 1) + 2 x 1 ½ ) = 6m2

Area to be covered = 84 - 6

= 78m2

Area of paper = Area to be covered = 78

⇒ (length x breadth) of paper is 78

⇒ length of paper = 78/50 x 100m

= 156 m

So, Cost = 156x25 / 100 = Rs.39

RRB JE IT (CBT I) Mock Test- 4 - Question 13

Two circles with radii R and r touch each other externally. A direct common tangent with length l is drawn to the circles. Which is true?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 13

Length of direct common tangent l2 = d2 – (R – r)2

Here, d = R + r

Therefore, l2 = (R + r)2 – (R – r)2 = 4Rr

= 2√Rr

RRB JE IT (CBT I) Mock Test- 4 - Question 14

A certain sum, invested at 4% per annum at compound interest, compounded half-yearly, amounts to Rs. 7,803 at the end of one year. Find the sum.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 14

If interest is compounded half-yearly rate will be 2 %

C.I. for 2 years = 4.04%

Principal = 7803 / 104.04 x 100

= Rs.7500

RRB JE IT (CBT I) Mock Test- 4 - Question 15

Read the following bar graph which represents a company's manufacturing and selling(in lakh) of product from 2002 to 2008 and answer the following questions.

The number of items manufactured in 2007 is what percent of the total number of items manufactured in all the years together? (Rounded off to two digits after decimal)?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 15

Reqd. % = {(90 x 100) / 520}% = 17.307% = 17.31 % (Appx.)

RRB JE IT (CBT I) Mock Test- 4 - Question 16

Find the measures of an angle that is the complement of 50°.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 16

Let the measure of angle = x°

measure of its complement = 50°

∴ x° + 50°= 90° ⇒ x° = 40°

RRB JE IT (CBT I) Mock Test- 4 - Question 17

If sin (10° 6’ 32" ) = a, then the value of cos (79° 53’ 28”) + tan (10° 6’ 32”) is:

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 17

cos 79o 53’ 25” + tan 10o 6’ 32”

= sin 10o 6’ 32” + sin 10o 6’ 32” / cos 10o 6’ 32”

RRB JE IT (CBT I) Mock Test- 4 - Question 18

If cos T = 3/5 and if sin R = 8/17, where T is in the fourth quadrant and R is in the second quadrant, then cos (T-R) is equal to:

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 18

We have

cos T = 3/5

sin T =

=

= √16/25 = -⅘ (Since T is in IV quadrant)

sin R = 8 /17

cos R =

=

√225 / 289 = -15/17 (Since r is in II quadrant)

Now, cos (T-R) = cos T cos R + sin T sinR

=

=

= 77/85

RRB JE IT (CBT I) Mock Test- 4 - Question 19

There are 13 white and 7 black balls in a bag. Two balls are drawn at random. What is the probability that they are of the same colour?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 19 Probability that both balls are of the same colour =

RRB JE IT (CBT I) Mock Test- 4 - Question 20

The ratio between the angles of a quadrilateral is 3:4:6:7. Half of the smallest angle of a quadrilateral is the angle of a cyclic quadrilateral. Find another angle of the cyclic quadrilateral?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 20

Let smallest angle is 3x

So,

3x + 4x + 6x + 7x = 360°

Smallest angle = 54°

According to given condition one angle of Cyclic quadrilateral = 27°

Another = 180 – 27 = 153°

RRB JE IT (CBT I) Mock Test- 4 - Question 21

A, B and C divide an amount of Rs. 9,915 amongst themselves in the ratio 3:5:7 respectively. What is the C’s share in the amount?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 21

A : B : C

3 : 5 : 7

Sum of their ratio = 3 + 5 + 7

= 15 units

Share of C = 7/15 × 9915 = 4,627

RRB JE IT (CBT I) Mock Test- 4 - Question 22

60 boys working 7 hours a day can do work in 18 days. In how many days will 28 boys working 9 hours a day do the same work?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 22

Using the formula M1D1H1W2 = M2D2H2W1

Since work is same for the two cases

M1D1H1 = M2D2H2

⇒ D2 = M1D1H1 / M2H2 = 60 x 7 x 18 / 28 x 9

= 30 days

RRB JE IT (CBT I) Mock Test- 4 - Question 23

What should come in place of the question mark (?)?

(833.25 – 384.45) ÷ 24 = ?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 23

(d) ?= (833.25–384.45)/24 = 448.8/24 = 18.7

RRB JE IT (CBT I) Mock Test- 4 - Question 24

The average of three numbers is 135. The largest number is 195 and the difference between the other two is 20. The smallest number is:

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 24

According to the question,

195 + x + x + 20 = 135 x 3

⇒ 2x + 215 = 405

⇒ 2x = 405 - 215 = 190

∴ x = 190 / 2

= 95

= smallest number

RRB JE IT (CBT I) Mock Test- 4 - Question 25

Distance between the parallel lines 3x + 4y – 15 = 0 and 9x + 12y – 20 = 0 is

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 25

3x + 4y - 15 = 0

Or 9x + 12y -45 = 0………………..(1)

And 9x + 12y - 20 = 0………………(2)

The distance between two parallel lines

ax + by +c1 = 0 and ax + by +c2 = 0 is

=

= 25/15 = 5/3 units

RRB JE IT (CBT I) Mock Test- 4 - Question 26

In a container of 56 litres the ratio of petrol to oil is 6:1. How much oil must be added to the mixture to make this ratio 2:1?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 26

Quantity of petrol = (6/7) x 56 = 48 Litre

Quantity of oil = (1/7) x 56 = 8 litre

Given, New Ratio = 48/8+x=12

48 = 16 + 2x

2x = 48 – 16

2x = 32

x = 16

16 litre is to be added

RRB JE IT (CBT I) Mock Test- 4 - Question 27

'A' starts a business with ₹ 3,500 and after 5 months, B joins with A as his partner. After a year, the profit is divided in the ratio 2:3 what is B's contribution to the capital?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 27

Let B’s investment be Rs x then

3500 x 12/x X 7 = ⅔

⇒ 6000 x 3 = 2x

⇒ x = ₹9,000

RRB JE IT (CBT I) Mock Test- 4 - Question 28

If a = 12, b = 13 and c = 14, then the value of b² c² + c² a² + a² b² – a⁴ – b⁴ – c⁴ is.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 28

b² c² + c² a² + a² b² – a⁴ – b⁴ – c⁴

= −12(2a⁴ + 2b⁴ + 2c⁴ – 2a² b² – 2b² c² – 2c² a²)

= −12[(a² − b²)² + (b² – c²)² + (c² – a²)²]

= −12[(144 − 169)² + (169 – 196)² + (196 – 144)²]

= −12[( −25)² + (27)² + (52)²] = –2029

RRB JE IT (CBT I) Mock Test- 4 - Question 29

The midpoint of the line segment joining (3,-8) and (x + 2, -2) is (4, -5). What is the value of X?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 29

Midpoint of (x1, y1) and (x2, y2)

X = (x1 + x2)/2

4 = (3 + x + 2)/2

⇒ (x+5)/2 = 4 ⇒ x = 3

RRB JE IT (CBT I) Mock Test- 4 - Question 30

A man saves 25% of his salary. If due to price rise he increases his monthly expenses by 25% and he is able to save only Rs. 25 per month. Find his monthly salary.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 30

Expenses before price rise = 100 - 25 = 75

25% increase in expenses = 100 + 25

= Rs. 125

Monthly Expenses = (75 x 125) / 100

= 375/4

Saving = 100 - 375/4 = 25/4

If saving in 25/4 then salary = 100

IF saving in 25 then salary

= (100 x 25 x 4)/25

= Rs. 400

RRB JE IT (CBT I) Mock Test- 4 - Question 31

In the following questions below are given some statements followed by some given conclusions. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements, disregarding commonly known facts. Give answer:

Statements:

Some pens are blue.

Some pencils are pens.

Conclusions:

I. Some pens are green.

II. Pencil is blue.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 31

(OR)

None of the two conclusions follows.

RRB JE IT (CBT I) Mock Test- 4 - Question 32

Choose the alternative which closely resembles the mirror image of the given figure.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 32

RRB JE IT (CBT I) Mock Test- 4 - Question 33

In these questions, statements are given followed by two conclusions I and II. You have to consider both the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions is/are definitely drawn from the given statements. Select answer as (a) If only I follows (b) If only II follows (c) If neither I nor II follows (d) If both I and II follow

Statements:

A. All tables are books.

B. All pens are books

Conclusions:

I. All tables are pens.

II. All pens are tables.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 33

RRB JE IT (CBT I) Mock Test- 4 - Question 34

Which of the following expressions will be true if the given equation 5x - 8 < 12 is definitely true ?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 34

5x - 8 + 8 < 12 + 8

5x < 20

x < 4

RRB JE IT (CBT I) Mock Test- 4 - Question 35

If DEAR is written as EDFEBASR, then MUST can be written as:

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 35 The next letter in the English alphabet is added before each letter of DEAR i.e. E is added before D, F is added before E and so on.

Therefore, MUST can be written as NMVUTSUT

RRB JE IT (CBT I) Mock Test- 4 - Question 36

In these questions, statements are given followed by two conclusions I and II. You have to consider both the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions is/are definitely drawn from the given statements. Select answer as (a) If only I follows (b) If only II follows (c) If neither I nor II follows (d) If both I and II follow

Statements:

A. Most lilies are roses.

B. Some roses are daffodils.

Conclusions:

I. Some daffodils are roses.

II. Some lilies are daffodils.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 36

RRB JE IT (CBT I) Mock Test- 4 - Question 37

Five bells commence tolling together and toll at intervals of 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 37

L.C.M. of 4, 6, 8, 10, and 12 is 120.

So, the bells will toll together after every 120 seconds (2 minutes).

In 30 minutes, they will toll together 30/2 + 1 = 16 times.

RRB JE IT (CBT I) Mock Test- 4 - Question 38

In a certain code language RECTORY is written as UMUSHAN. How will VIADUCT be written in that code language?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 38

Similarly,

RRB JE IT (CBT I) Mock Test- 4 - Question 39

Seats for Science, Arts and Commerce in a school are in the ratio 6:9: 10. There is a proposal to increase these seats by 30%, 20% and 65% respectively. What will be the ratio of increased seats?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 39 Originally, let the number of seats for Science, Arts and Commerce be 6x, 9x and 10x respectively.

Number of increased seats are (130% of 6x), (120% of 9x) and (165% of 10x).

(130/100×6x) : (120/100 × 9x) : (165/100 × 10x)

= 78x : 108x : 165x

= 26 : 36 : 55

RRB JE IT (CBT I) Mock Test- 4 - Question 40

How many meaningful English words can be made with the letters ‘P E A R’ using each letter only once in each word?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 40 There are four words form from the letters ‘P E A R’ i.e., Pare, Pear, Reap & Rape.
RRB JE IT (CBT I) Mock Test- 4 - Question 41

Given below is a statement followed by 2/3 Assumptions. An assumption is something not written directly but can be considered as the implicit understanding before writing any text, document or writing. Choose the implicit assumption in the following question:

Statement: TATA passenger bus manufacturing company announced a sharp reduction in the prices of their luxury Buses.

Assumptions:

I. There may be an increase in the sale of their luxury buses.

II. The other such bus manufacturers will also reduce their prices.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 41 The price of any product is lowered assuming that its demand will increase. Therefore, the assumption I is implicit in the statement.
RRB JE IT (CBT I) Mock Test- 4 - Question 42

In these questions, statements are given followed by two conclusions I and II. You have to consider both the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions is/are definitely drawn from the given statements. Select answer as (a) If only I follows (b) If only II follows (c) If neither I nor II follows (d) If both I and II follow

Statements :

All goats are wolves.

Some wolves are tigers.

Conclusions :

I. Some goats are tigers.

II. Some tigers which are wolves are not goats.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 42

Neither I nor II follow.

RRB JE IT (CBT I) Mock Test- 4 - Question 43

‘Anvil’ is used in the work of

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 43 Anvils are as massive as they are practical, because the higher their inertia, the more efficiently they cause the energy of striking tools to be transferred to the workpiece. In most cases, the anvil is used as a forging tool.
RRB JE IT (CBT I) Mock Test- 4 - Question 44

How many such pairs of letters are there in the word ESTABLISHMENT each of which has as many letters between them in the word as in the English alphabet?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 44

RRB JE IT (CBT I) Mock Test- 4 - Question 45

In each of the following questions, select the related word/letters/number from the given alternatives.

Clock : Time : : Calorimeter : ?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 45 First is an instrument to measure the second. The calorimeter is the instrument for measuring absorbed or involved heat.
RRB JE IT (CBT I) Mock Test- 4 - Question 46

In the following problems, there is one question and some statements given below the question. You have to decide whether the data given in the statements is sufficient to answer the question. Read all the statements carefully and find out which of the statements is/are sufficient to answer the given question. Choose the correct alternative for each question.

Find Ratnesh's present age, if

I. Five years ago, Ratnesh's age was double that of his daughter's age at that time.

II. Present ages of Ratnesh and his daughter are in the ratio of 11:6 respectively.

III. Five years hence, the respective ratio of Ratnesh's age and his daughter's age will become 12:7.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 46

1) Present ages of Ratnesh and his daughter will be 11x and 6x years respectively.

2) 5 years ago, Ratnesh's age = 2 x His daughter's age

3) 5 years hence, Ratnesh's age/daughter's age = 12/7

Clearly, any two of the above will give Ratnesh's present age Therefore, the correct answer is (d).

RRB JE IT (CBT I) Mock Test- 4 - Question 47

Question: In which year was Neha born?

Statement I: Neha at present is 20 years younger to her mother.

Statement II.: Neha"s brother, who was born in 1970, is 25 years younger to his mother.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 47

Age of mother be = x

Age of Neha = x -20

Age of Neha's brother = x+25

Difference between the age of Neha and Neha's brother = x-20-x+25

= 5 years

Thus, Neha is 5 years younger to her brother

Therefore, Neha was born in 1965.

So both statements I and II are required.

RRB JE IT (CBT I) Mock Test- 4 - Question 48

Which answer figure will complete the pattern in the question figure?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 48

RRB JE IT (CBT I) Mock Test- 4 - Question 49

In the given figure, how many red pens are there?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 49 No. of red that are pens are 12 + 20 = 32.
RRB JE IT (CBT I) Mock Test- 4 - Question 50

In this question, choose the correct water image of the figure (X) from amongst the 4 alternatives.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 50 Figure (b) is exactly inverted of the figure (x) so it is a water image.
RRB JE IT (CBT I) Mock Test- 4 - Question 51

Eight persons F, G, H, I, J, K, L and M all are sitting around a rectangular table facing the centre. In which four are sitting on the corner and four are middle at the line. All are like different colour Red, Blue, Brown, Yellow, Green, Grey, pink and purple. (Not necessary in the same order).

F is sitting third to the right of I and third to the left of K. The person who likes red colour is the neighbour of J. The person who likes grey colour is sitting second to the right of F and second to the left of L. Green is the neighbour of grey. K likes pink colour. Blue and brown colour are not the neighbours of purple and pink. F likes purple colour. I like the colour blue. G does not like green, grey and brown colour. M does not like the green colour. M sits at the corner.

Which of the following colours is liked by M?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 51

RRB JE IT (CBT I) Mock Test- 4 - Question 52

Eight people F, G, H, I, J, K, L and M all are sitting around a rectangular table facing the centre. In which four are sitting on the corner and four are middle at the line. All are like different colours: Red, Blue, Brown, Yellow, Green, Grey, pink and purple. (Not necessary in the same order).

F is sitting third to the right of I and third to the left of K. The person who likes red colour is the neighbour of J. The person who likes grey colour is sitting second to the right of F and second to the left of L. Green is the neighbour of grey. K likes pink. Blue and brown colour are not the neighbours of purple and pink. F likes purple colour. I like the colour blue. G does not like green, grey and brown colours. M does not like the green colour. M sits at the corner.

Which of the following options denoted the group of persons sitting at the corner of the rectangular table?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 52

RRB JE IT (CBT I) Mock Test- 4 - Question 53

In the question, a piece of paper is folded and cut as shown below in the questions figures. From the given option figure, indicates how it will appear when opened.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 53

RRB JE IT (CBT I) Mock Test- 4 - Question 54

In a family of Six members, A, B, C, D, E and F. A and B are married, A is a male member. D is the son of C, who is the brother of A. E is the sister of D. B is the daughter-in-law of F, whose husband has died.

How is C related to B?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 54

C is the brother-in-law of B.

RRB JE IT (CBT I) Mock Test- 4 - Question 55

In the following problems, there is one question and some statements given below the question. You have to decide whether the data given in the statements are sufficient to answer the question. Read all the statements carefully and find out which of the statements is/are sufficient to answer the given question. Choose the correct alternative for each question.

How is Monika related to Praveen?

Statement I: Ramesh is the father of Praveen and Monika is the Granddaughter of Sima.

Statement II: Ramesh is only one son of Sima

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 55

Statement I and II together required to answer the question

RRB JE IT (CBT I) Mock Test- 4 - Question 56

The term 'Skeet' is associated with which of the following sports/games?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 56 The term 'Skeet' is associated with Shooting.

Skeet shooting is a recreational and competitive activity where participants, using shotguns, attempt to break clay targets mechanically flung into the air from two fixed stations at high speed from a variety of angles.

RRB JE IT (CBT I) Mock Test- 4 - Question 57

Match the following countries with their respective continents.

 A. Tunisia 1. Africa B. Hungary 2. South Africa C. Vietnam 3. Europe D. Chile 4. Asia

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 57
 A. Tunisia Africa B. Hungary Europe C. Vietnam Asia D. Chile South Africa

RRB JE IT (CBT I) Mock Test- 4 - Question 58

Who invented the 'Crescograph' in the 20th Century?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 58 Sir Jagadish Chandra Bose, a lead botanist of his time was famous for his invention of the Crescograph in the 20th century.

It is a device for measuring plant growth.

RRB JE IT (CBT I) Mock Test- 4 - Question 59

Where was the 12th World Congress on Mountain Medicine organised recently?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 59 12th World Congress on Mountain Medicine was recently organised in Kathmandu.

The theme of the 4-day congress was "Mountain Medicine in the Heart of the Himalayas".

The event focused on the science and research aspects of high-altitude medicine for the advancement of human healthcare.

RRB JE IT (CBT I) Mock Test- 4 - Question 60

Who was recently appointed as the new Chief Election Commissioner of India?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 60 Sunil Arora was recently appointed as the new Chief Election Commissioner (CEC) of India.

He succeeded Om Prakash Rawat.

He is a former bureaucrat with the government of India.

RRB JE IT (CBT I) Mock Test- 4 - Question 61

Which of the following Public Sector Undertaking was recently conferred with the status of 'Miniratna'?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 61 National Projects Construction Corporation Limited (NPCC) a schedule 'B' CPSE under the administrative control of Ministry of Water Resources RD & GR was recently conferred with the status of Miniratna: Category - I by the Government of India.

NPCC incorporated in 1957.

RRB JE IT (CBT I) Mock Test- 4 - Question 62

Fields Medal is a prestigious award given for which of the following categories?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 62 The Fields medals are awarded every four years to the most promising mathematicians under the age of 40.

• The prize was inaugurated at the request of Canadian mathematician John Charles Fields, who ran the 1924 Mathematics Congress in Toronto.

• At least two, and preferably four people, are always honoured in the award ceremony.

RRB JE IT (CBT I) Mock Test- 4 - Question 63

Who among the following demonstrated authoritatively that white light is composed of the different colours of the spectrum?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 63 Isaac Newton (1642-1727) was a well-known scientist who conducted research on the sun, light, and colour.

Through his experiments with prisms, he was the first to authoritatively demonstrate that white light is composed of the different colours of the spectrum.

Seven colours constitute white light: red, orange, yellow, green, blue, indigo, and violet.

RRB JE IT (CBT I) Mock Test- 4 - Question 64

ADB & Central Government signed a \$200 million loan to finance widening and upgrading of about 230 Kilometres State Highways in which state?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 64 Asian Development Bank (ADB) and the Government of India (GoI) signed a \$200 million loan to finance widening and upgrading of about 230 Kilometres State Highways in Bihar to all-weather standards with road safety features which will boost connectivity
RRB JE IT (CBT I) Mock Test- 4 - Question 65

Who is the current Union minister for textiles?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 65

 Smriti Irani Textile Ministry Rajyavardhan Singh Rathore Ministry of Youth Affairs and Sports Alphonse K Ministry of Tourism Ram Vilas Paswan Ministry of Consumer Affairs, Food and Public Distribution

RRB JE IT (CBT I) Mock Test- 4 - Question 66

'Hausla 2018', an inter-Child Care Institution festival was recently organised in New Delhi by which of the following ministries?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 66 The National Festival for Children of Child Care Institutions (CCIs)- "Hausla 2018" was recently organized by the Ministry of Women and Child Development.

"Child Safety" was the theme for 2018.

It provided a platform for the children from CCIs to showcase their talent in their respective domains.

RRB JE IT (CBT I) Mock Test- 4 - Question 67

Which of the following organisations publishes 'Gender Inequality Index'?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 67 Gender Inequality Index has been published by UNDP as a part of its Human Development report annually since 2010.

The United Nations Development Programme (UNDP) is the United Nations' global development network.

RRB JE IT (CBT I) Mock Test- 4 - Question 68

Unnakoti is an ancient site with exotic sculptors of great precision idols carved out of rocks situated in which of the following states?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 68 Unakoti is a pilgrimage site in Tripura dedicated to Lord Shiva, and it is believed to be many centuries old.

Unakoti translates to "less than a crore in number" and has several discovered and yet-to-be-discovered sculptures of Hindu gods and goddesses.

A giant 30-ft-long carving of Lord Shiva's head called Unakotishwara Kal Bhairav is revered most of all.

RRB JE IT (CBT I) Mock Test- 4 - Question 69

Which of the following is India's largest Container Port?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 69 Nhava Sheva, JNPT in Maharashtra is India's largest Container Port, working with a capacity of 7.4 MTPA.

It is a major Port that recently through various initiatives implemented Ease of Doing Business to create value for trade and achieved significant improvements in Port performance metrics.

RRB JE IT (CBT I) Mock Test- 4 - Question 70

Which of the following won the Davis Cup 2018 title?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 70 Marin Cilic clinched Croatia's second Davis Cup title when he beat France's Lucas Pouille.

The 2018 Davis Cup is the 107th edition of the Davis Cup, a tournament between national teams in men's tennis.

Croatia won the Davis cup title 13 years after its first title.

RRB JE IT (CBT I) Mock Test- 4 - Question 71

If the gravitational acceleration at any place is doubled, then the weight of the body will be

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 71 If the gravitational acceleration at any place is doubled, then the weight of the body will be 2g
RRB JE IT (CBT I) Mock Test- 4 - Question 72

If at high altitudes, birds become rare, the plants likely to disappear are

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 72 Rhododendron /ˌroʊdəˈdɛndrən/ (from Ancient Greek ῥόδον rhódon "rose" and δένδρον déndron "tree") is a genus of 1,024 species of woody plants in the heath family (Ericaceae), either evergreen or deciduous, and found mainly in Asia, although it is also widespread throughout the highlands of the Appalachian Mountains of North America. It is the national flower of Nepal as well as the state flower of West Virginia and Washington. Most species have brightly coloured flowers which bloom from late winter through to early summer.[Rhododendron /ˌroʊdəˈdɛndrən/ (from Ancient Greek ῥόδον rhódon "rose" and δένδρον déndron "tree") is a genus of 1,024 species of woody plants in the heath family (Ericaceae), either evergreen or deciduous, and found mainly in Asia, although it is also widespread throughout the highlands of the Appalachian Mountains of North America. It is the national flower of Nepal as well as the state flower of West Virginia and Washington. Most species have brightly coloured flowers which bloom from late winter through to early summer.

If at high altitudes, birds become rare, the plants likely to disappear are Rhododendron

RRB JE IT (CBT I) Mock Test- 4 - Question 73

In blanking operation clearance is provided on

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 73 In blanking operation clearance is provided on punch
RRB JE IT (CBT I) Mock Test- 4 - Question 74

In graphite, electrons are _______

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 74 In graphite, electrons are generally spread out between the structures.
RRB JE IT (CBT I) Mock Test- 4 - Question 75

Focal length of a convex lens is maximum for

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 75 Focal length of a convex lens is maximum for Red light.
RRB JE IT (CBT I) Mock Test- 4 - Question 76

The hardest substance available on earth is ____

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 76 Diamond is very hard. The hardness of a diamond is due to the structure of its carbon atoms. In a diamond, each carbon atom is bonded to four other carbon atoms which form a giant, three-dimensional structure.
RRB JE IT (CBT I) Mock Test- 4 - Question 77

Which of the following is a non-metal that remains liquid at room temperature?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 77 Room temperature is usually taken as being 25°C, at this temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine and astatine are solids.
RRB JE IT (CBT I) Mock Test- 4 - Question 78

The formula of Plaster of Paris is _____

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 78 The formula of Plaster of Paris is 2CaSO4, H2O
RRB JE IT (CBT I) Mock Test- 4 - Question 79

A body moving in a circular path with constant speed has

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 79 A body moving at constant speed in a circular path experiences an acceleration directed towards the centre of the circular path. This acceleration is called centripetal acceleration and is provided by a centripetal force. In the circular motion situation, even if the speed is constant the acceleration changes all the time as the direction keeps on changing.
RRB JE IT (CBT I) Mock Test- 4 - Question 80

In a National Park protection is provided to

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 80 In a National Park protection is provided to flora and fauna
RRB JE IT (CBT I) Mock Test- 4 - Question 81

If we throw a Stone with some speed in a horizontal direction it follows a ……………. path as it falls to the ground.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 81 If we throw a Stone with some speed in a horizontal direction it follows a curved path as it falls to the ground.
RRB JE IT (CBT I) Mock Test- 4 - Question 82

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 82 Radar is used to detect and locate distant objects.
RRB JE IT (CBT I) Mock Test- 4 - Question 83

Which of the following has a maximum metallic character?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 83 As we move down the group in the periodic table, the metallic character increases.
RRB JE IT (CBT I) Mock Test- 4 - Question 84

The purest form of iron is ____

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 84 Wrought iron

Wrought Iron is the purest form of Iron. It contains 0.12–0.25 carbon.

RRB JE IT (CBT I) Mock Test- 4 - Question 85

Molecular mass of sulphurous acid is ____.

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 85

Molecular mass of H2SO3 sum of individual atomic masses

= 2 x 1 + 1 x 32 + 3 x 16 = 82

RRB JE IT (CBT I) Mock Test- 4 - Question 86

Caustic Soda is ____

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 86 Caustic soda is a solution of Sodium hydroxide (NaOH) in water. It is a strong base with a wide range of applications in different industries. We produce caustic soda together with chlorine and hydrogen from the electrolysis of salt brine
RRB JE IT (CBT I) Mock Test- 4 - Question 87

In wind power, which form of energy is converted into electrical energy?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 87 In wind power, the Kinetic energy form of energy is converted into electrical energy.
RRB JE IT (CBT I) Mock Test- 4 - Question 88

Which instrument is used for measuring relative humidity?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 88 A hygrometer is used for measuring relative humidity
RRB JE IT (CBT I) Mock Test- 4 - Question 89

Which one of the following has maximum genetic diversity in India

RRB JE IT (CBT I) Mock Test- 4 - Question 90

What is the key ingredient of Vinegar that you use in your diet?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 90 Acetic acid: Vinegar is a liquid consisting of about 5–20% acetic acid (CH3COOH), water, and other chemicals, which may include flavourings.
RRB JE IT (CBT I) Mock Test- 4 - Question 91

If petrol is used in a diesel engine, then

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 91 Diesel doesn't ignite so well, but burns much better through compression. Petrol engines inject the air/fuel mixture and then use spark plugs to ignite the mixture just after a piston reaches the top dead centre. Diesel engines compress air and then add air/fuel mixture. As a result, they run hotter. So Dark and black smoke will be produced
RRB JE IT (CBT I) Mock Test- 4 - Question 92

Electricity is produced through the dry cell from

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 92 Electricity is produced through dry cells from Chemical energy.
RRB JE IT (CBT I) Mock Test- 4 - Question 93

X-rays were discovered by -

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 93 X-rays were discovered by Wilhelm Conrad Roentgen
RRB JE IT (CBT I) Mock Test- 4 - Question 94

Electron was discovered by:-

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 94 Electron was discovered by J J Thomson
RRB JE IT (CBT I) Mock Test- 4 - Question 95

The unit of solid angle is

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 95 The unit of solid angle is 9.46 × 108 km
RRB JE IT (CBT I) Mock Test- 4 - Question 96

Which of the following roofs provide better protection against fire?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 96 Asbestos sheet roofs provide better protection against fire
RRB JE IT (CBT I) Mock Test- 4 - Question 97

‘Piped Natural Gas(PNG) Is used for

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 97 PNG is mainly methane CH4 with a small percentage of other higher hydrocarbons. The ratio of carbon to hydrogen is least in methane hence it burns almost completely making it the cleanest fuel. Domestic PNG customers, also known as Residential customers, use gas for cooking purposes and also for heating water through gas geysers.
RRB JE IT (CBT I) Mock Test- 4 - Question 98

The ionosphere is mainly composed of

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 98 The ionosphere is mainly composed of electrons and positive ions.
RRB JE IT (CBT I) Mock Test- 4 - Question 99

What principle/law explains the working of the hydraulic brakes in automobiles?

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 99 Hydraulic brakes work on the principle of Pascal’s law which states that “pressure at a point in a fluid is equal in all directions in space”. According to this law when pressure is applied to a fluid it travels equally in all directions so that uniform braking action is applied on all four wheels. The hydraulic brake is an arrangement of braking mechanism which uses brake fluid, typically containing ethylene glycol, to transfer pressure from the controlling unit, which is usually near the operator of the vehicle, to the actual brake mechanism, which is usually at or near the wheel of the vehicle.
RRB JE IT (CBT I) Mock Test- 4 - Question 100

is called the Powerhouse’ of cell—

Detailed Solution for RRB JE IT (CBT I) Mock Test- 4 - Question 100 Mitochondria is called the Powerhouse of a cell.

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