RRB JE ECE (CBT I) Mock Test- 1

# RRB JE ECE (CBT I) Mock Test- 1

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## 100 Questions MCQ Test RRB JE Mock Test Series for ECE | RRB JE ECE (CBT I) Mock Test- 1

RRB JE ECE (CBT I) Mock Test- 1 for Railways 2023 is part of RRB JE Mock Test Series for ECE preparation. The RRB JE ECE (CBT I) Mock Test- 1 questions and answers have been prepared according to the Railways exam syllabus.The RRB JE ECE (CBT I) Mock Test- 1 MCQs are made for Railways 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for RRB JE ECE (CBT I) Mock Test- 1 below.
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RRB JE ECE (CBT I) Mock Test- 1 - Question 1

### If P = sin θ (sin θ + sin 3θ), then

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 1 We have

P = sin θ (sin θ + sin 3θ)

= sin θ (2sin 2θ. cos θ)

[∵ sin C + sin D = 2sin (C+D/2).cos (C−D/2)]

⇒ P = sin 2θ (2sin θ. cos θ)

= sin 2θ.sin 2θ = sin2

P = sin2 2θ ≥ 0

for all real θ

RRB JE ECE (CBT I) Mock Test- 1 - Question 2

### The value of the expression

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 2

4(n+m-1+m-n-2m)x5(m-1+m+n-2-2m-n)x3(m-n+m+n-2-2m+2

= 4-1 x 5-3 x 30

= 1/4 x 1/125 x 1 = 1/500

RRB JE ECE (CBT I) Mock Test- 1 - Question 3

### Perimeter of an equilateral triangle is equal to the circumference of a circle. The ratio of their areas is :(Use π= 22/7)

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 3 Accordingly to the question,

3a = 2πr

⇒ a = 2/3πr

Area of an equilateral triangle:

RRB JE ECE (CBT I) Mock Test- 1 - Question 4

AB = 8 cm and CD = 6 cm are parallel chords on the same side of the centre of a circle. The distance between them is 1cm. The radius of the circle is:

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

Let OE= x

OF = x+1, OA=OC= r

AE= 4cm, CF= 3cm

From ∆ OAE

r2 = 16+x2

x2 = r2- 16 ------(1)

From ∆ OCF

(x+1)2 = r2 - 9 ------ (2)

By equation (2) - (1)

x = 3cm

r = 5cm

RRB JE ECE (CBT I) Mock Test- 1 - Question 5

A tank that would normally be filled in 8 hours is now taking 2 hours more because of a leak. In how much time will the leak empty the full tank?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 5 Time taken by the inlet pipe to fill the tank = 8 h

Time taken to fill the tank due to leak = 8 + 2 = 10 h

Let the leak take x hours to empty the filled tank.

Now, according to the question:

Time taken by leak to empty the tank = X = 40 hours

RRB JE ECE (CBT I) Mock Test- 1 - Question 6

A sum of Rs. 210 was taken as a loan. This is to be paid back in two equal installments. If the rate of interest be 10% compounded annually, then the value of each installment is

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 6

Let x be the value of installment.

Principal = Present value of x for 1 year + Present value of x for 2 years

RRB JE ECE (CBT I) Mock Test- 1 - Question 7

The difference between simple and compound interest for the fourth year is ₹ 7280 at 20% p.a. What is the sum?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 7

Difference between CI and SI for the nth year

CI for 4th year = 20736 - 17280 = 3456

SI for 4th year = 2000

Difference between CI and SI = 1456 for Rs10000

So, the difference of Rs7280 is for Rs50,000

RRB JE ECE (CBT I) Mock Test- 1 - Question 8

At present, the sum of ages of R and K is 63 years. The ratio of their ages after 7 years will be 7:4; what is the present age of R?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 8 Let the present age of R is x

⇒ present age of K is 63 - x

7 years later

R's age = x+7

K's age = 63-x+7 = 70-x

⇒ (x+7)/(70-x) = 7/4

⇒ 4x+28 = 490-7x

⇒ 11x = 462

⇒ x = 42 years

therefore present age of R = 42 years

RRB JE ECE (CBT I) Mock Test- 1 - Question 9

If cosec θ = x + 1/4x, then the value of cosec θ + cot θ is:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 9 Let cosec θ + cot θ = k

⇒ cosec θ - cot θ = 1/k

2 cosec θ = k + 1/k = 2(x+1/4x) = k+1/k

⇒ 2x+1/2x = k+1/k ⇒ k = 2x

RRB JE ECE (CBT I) Mock Test- 1 - Question 10

Base of a right pyramid is a square of area 324 sqm. If the volume of the pyramid is 1296 cu.m., then the area (in m2) of the slant surface is:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 10

RRB JE ECE (CBT I) Mock Test- 1 - Question 11

In the given figure AB || CD || EF || GH and BH = 100 cm. Find the value of DF.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 11

AG/BH = CE/DF

120/100 = 30/DF ⇒ DF = 100×30/120 = 25

RRB JE ECE (CBT I) Mock Test- 1 - Question 12

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

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 12

cos 790 53’ 28’’ + tan 100 + 6’ 32’’

RRB JE ECE (CBT I) Mock Test- 1 - Question 13

In the figure AB || CD, ∠DPL= 1/2∠NPO, OP is the perpendicular on MN, the value of xº is:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 13

∠ONP = 60°

∠OPN = 90° - ∠ONP = 90° -60°

⇒ OPN = 30°

RRB JE ECE (CBT I) Mock Test- 1 - Question 14

Find the area between two concentric circles of circumference 88 cm and 132 cm.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 14 Let the radius of the inner circle be r1, and the radius of the outer circle be r2.

A.T.Q.,

RRB JE ECE (CBT I) Mock Test- 1 - Question 15

A man moving at a speed of 36 kmph covered the shadow of a tower of height 75 m in 3 seconds. If the height of the person is 1.75 m, the length of the shadow cast by the man in meters is:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 15

Distance travelled in 3 seconds with a speed of 36 kmph is =

(5/18)×(3)×(36) = 30m.

From the figure tan θ = BC/AB = 75/30 = 5/2

The height of the person is 1.75 m

Let the length of the shadow be x m.

tan θ = 1.75/x ⇒ 52 = 1.75/x

⇒ x = 1.75/5(2) = 0.7

RRB JE ECE (CBT I) Mock Test- 1 - Question 16

A dress is 25% off. If both the cost and selling prices are ₹ 100 less, the profit would be 35%. Find its cost price?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 16 C.p = (Initial profit + increase in profit %)/Increase in profit%×Amount

C.P = 25+10/10×100

= ₹ 350

RRB JE ECE (CBT I) Mock Test- 1 - Question 17

The speed of a car during the second hour of its journey is thrice that in the first hour. Also, its third-hour speed is the average speed of the first two hours. Had the car travelled at the second hour’s speed during all the first three hours, then it would have travelled 150 km more. Find the percentage reduction in time if the original distance covered by the second hour’s speed:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 17

∴ Percentage increase in speed = 3x/6x × 100 = 50%

Since speed is increased by (50%) ½

Therefore, time will reduce by (33.33%) 1/3

RRB JE ECE (CBT I) Mock Test- 1 - Question 18

If A+B = 45°, then find the value of tan A + tan B + tan A tan B.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 18

A+B = 45°

tan (A+B) = tan 45°

tan A + tanB + tanAtanB = 1

RRB JE ECE (CBT I) Mock Test- 1 - Question 19

If a + b +c = 13, what is the maximum value of (a -3)(b -2) (c + 1) ?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 19 If x+y +z is constant, the product xyz takes maximum value when each of x, y, z takes equal value.

∵ a + b +c = 13

∴ (a -3) + (b -2) + (c + 1) = 13 – 3 – 2 + 1 = 9

For the maximum value of (a -3)(b -2) (c + 1)

= (a -3)= (b -2)= (c + 1)= 9/3 = 3

So, (a -3)(b -2) (c + 1) = 3 × 3 × 3 = 27

RRB JE ECE (CBT I) Mock Test- 1 - Question 20

The length of three medians of a triangle are 9 cm, 12 cm and 15 cm. The area (in sq. cm) of the triangle is:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 20

Area of triangle = Area of a triangle formed by taking median as a side of the triangle

A = 9, B = 12, C = 15

RRB JE ECE (CBT I) Mock Test- 1 - Question 21

The floor of a room is of size 4 m x 3 m, and its height is 3 m. The walls and ceiling of the room require painting. The area to be painted is

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 21 Area of the four walls of the room

= 2 x height (length + breadth)

= 2 x 3(4+3) = 42 sq. metre

Area of ceiling = 4 x 3

= 12 sq. metre

Required area = 42 + 12

= 54 sq. metre

RRB JE ECE (CBT I) Mock Test- 1 - Question 22

If 5 girls can embroider a dress in 9 days, then the number of days taken by 3 girls will be _____.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 22 Days taken by 5 girls to embroider a dress = 9 days

Days taken by 1 girl to embroider a dress = 9 x 5 days

Days taken by 3 girls to embroider a dress = 9 × 5/3 days = 15 days

RRB JE ECE (CBT I) Mock Test- 1 - Question 23

How many metres length of cloth 10 m wide will be required to make a conical tent with base radius of 14 m and height is 48 m?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 23 Slant height of a cone: ( l ) = √(r2 + h2)

= √(142 + 482)

= √196 + 2304

= √2500

l = 50 m

Lateral surface area of a cone = πrl

Hence length of cloth =

= 220 m

RRB JE ECE (CBT I) Mock Test- 1 - Question 24

Two trains are travelling in the same direction at 40 kmph, and 22 kmph completely pass off another in 1 minute. If the length of the first train is 125 metres, what is the length of the second train?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 24 Distance traveled by the relative speed of (40-22) kmph i.e. 18 kmph

In 1 minute= 18×1000/60 = 300 m

∴ Length of second train = (300-125) = 175 m

RRB JE ECE (CBT I) Mock Test- 1 - Question 25

The ratio between the ages of a father and a son at present is 5: 2, respectively. Four years hence the ratio between the ages of the son and his mother will be 1: 2 respectively. What is the ratio between the present ages of the father and the mother, respectively?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 25 Let the present ages of father and son be ‘5x’ and ‘2x’ years, respectively.

After 4 years, Son’s age = (2x + 4) years

According to question

After 4 years

The ratio between the present age of the father and mother = 5x: (4x + 4)

∴ We cannot find the exact value of the ratio.

Age of mother = 2 x (2x+ 4) = 4x+ 8 years

Present age of Mother = 4x + 8 - 4

= 4x +4

The ratio between the present age of the father and mother = 5x: (4x + 4)

∴ We cannot find the exact value of the ratio.

RRB JE ECE (CBT I) Mock Test- 1 - Question 26

If x4 + 1/x4 =119 and x > 1, then the value of x3 − 1/x3 is:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 26

RRB JE ECE (CBT I) Mock Test- 1 - Question 27

The total annual Co2 emissions from various sectors are 5 MMT. In the pie chart given below, the percentage distribution to Co2 emission from various sectors are indicated.

Q. Emission of Domestic sector is how much % of transport and commercial sector combined?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 27

15/50 × 100 = 30%

RRB JE ECE (CBT I) Mock Test- 1 - Question 28

The total annual Co2 emissions from various sectors are 5 MMT. In the pie chart given below, the percentage distribution to Co2 emission from various sectors are indicated.

Q. Which of the following sectors have an emission difference of 1 MMT between them?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 28

1 mmt = 20% = Thermal – Domestic

RRB JE ECE (CBT I) Mock Test- 1 - Question 29

Twenty percent of Anuj’s annual salary is equal to seventy-five per cent of Raj’s annual salary. Raj’s monthly salary is 60% of Ravi’s monthly salary. If Ravi’s annual salary is Rs. 1.44 lacs, what is Anuj’s monthly salary?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 29

Given:

20% of Anuj's annual salary = 75% of Raj's annual salary

Raj's annual salary = 60% of Ravi's monthly salary

Ravi's annual salary = Rs. 1.44 lakhs = Rs. 144000

Concept:

20% = 1/5, 75% = 3/4, 60% = 3/5

Calculation:

Ravi's monthly salary = 144000/12 = 12000

60% of Ravi's monthly salary = Raj's annual salary

⇒ (3/5) × 12000 = Rs. 7200 = Raj's annual salary

Now, 1/5 of Anuj's annual salary = 3/4 of 7200 = 5400

∴ Anuj's annual salary = 5 × 5400 = Rs. 27000

RRB JE ECE (CBT I) Mock Test- 1 - Question 30

The product of two successive numbers is 4032. Which is the greater of the two numbers?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 30

63 x 64 = 4032

RRB JE ECE (CBT I) Mock Test- 1 - Question 31

In the following question, select the related letter/word/number from the given alternatives.

MUSIC: TUNE

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 31 As the tune is in music, rhythm is in dance.
RRB JE ECE (CBT I) Mock Test- 1 - Question 32

Find out similar set of the given set:

(64, 216, 125)

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 32 The given question set (64, 216, 125) is the perfect cube of

(4, 6, 5). Similarly, (8, 27, 64) is the perfect cube of (2, 3, 4).

RRB JE ECE (CBT I) Mock Test- 1 - Question 33

Pointing to a boy Neha said, ‘He is the son of my grandfather’s only child. How is she related to that boy?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 33 Grandfather's child is the father, and the son of a girl's father will be her brother.
RRB JE ECE (CBT I) Mock Test- 1 - Question 34

In a code language, ‘S1357’ means ‘SWe are very happy’, ‘S2639’ means ‘Sthey are extremely lucky’, and ‘S794’ means ‘SHappy and lucky’. Which digit in that code language stands for ‘Svery’?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 34 01357 → we are very happy .......(i)

2639 → they are extremely lucky ......(ii)

794 → happy and lucky ......(iii)

from (i) and (ii)

3 → are

from (ii) and (iii)

9 → lucky

from (i) and (iii)

7 → happy

from (iii)

4 → and

from (i)

1, 5 → we, very

Hence, we cannot find the exact code for 'very'.

RRB JE ECE (CBT I) Mock Test- 1 - Question 35

In a certain code language, the word ‘FUTILE’ is written as ‘HYVMNI’. How will the word ‘PENCIL’ be written in that language?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 35 Odd-placed letters are coded as two places forward, and even-placed letters are coded as four places forward as in the English alphabet.
RRB JE ECE (CBT I) Mock Test- 1 - Question 36

Laxman started walking from his house and went 15 km to the North, then he turned West and covered 10 km. Then he turned South and covered 5 km. Finally, turning to the East, he covered 10 km. In which direction he is from his house?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 36

From the figure, it's clear that Laxman is in the north of his house.

RRB JE ECE (CBT I) Mock Test- 1 - Question 37

Given below are two Matrices of Twenty-five Cells, each containing two classes of alphabets. The columns and rows of Matrix I are numbered from 0 to 4 and that of Matrix II from 5 to 9. A letter from these matrices can be represented first by its row number and next by its column number. In each of the following questions, identify one set of number pairs out of (1), (2), (3) and (4), which represents the given word.

RUST

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 37

RUST

R– 57, 97, 99

U– 68, 78

S– 56, 58, 98

T– 59, 67

Therefore, the correct answer is option (3) i.e. 97, 68, 56, 59

RRB JE ECE (CBT I) Mock Test- 1 - Question 38

Arrange the following in a meaningful order:

1. Curd

2. Grass

3. Butter

4. Milk

5. Cow

RRB JE ECE (CBT I) Mock Test- 1 - Question 39

In the questions given below, some relationship has been expressed through symbols as shown below. Based on the meaning of these symbols and choose the correct answer.

ϕ means ‘less than.’

Δ means ‘not greater than.’

- means ‘equal to.’

+ means ‘not equal to.’

× means ‘not less than.’

= means ‘greater than.’

X ϕ Y - Z implies

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 39 Clearly, the meaning of the given symbols

X ϕ Y - Z ⇒ X < Y = Z

Using the proper notations/symbols in option (c), we get

X + Y × Z ⇒ X ≠ Y > Z ⇒ X < Y = Z

Therefore, X ϕ Y - Z ⇒ X + Y × Z.

RRB JE ECE (CBT I) Mock Test- 1 - Question 40

Choose the odd one out from the given alternatives.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 40 Except MOTHER: TMPRHD, the rest of the group follow the arrangement given below.

Pattern is-

RRB JE ECE (CBT I) Mock Test- 1 - Question 41

Find the odd one out from the given alternatives.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 41 Except in pairs 33- 56, in all others, the sum of digits of one number is equal to the sum of digits of all the second number.
RRB JE ECE (CBT I) Mock Test- 1 - Question 42

In the question below, there are few statements followed by few conclusions. You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follow(s) from the given statements.

Statements:

All horses are rivers.

All rivers are jungles.

No Jungle is a flower.

Conclusions:

I. No horse is a flower.

II. No flower is a horse.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 42

If both Conclusions I and II follow.

RRB JE ECE (CBT I) Mock Test- 1 - Question 43

Choose the missing terms out of the given alternatives.

Ef_h_gfe_hef_ehgefg_

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 43 The given cyclic order series follows the pattern

RRB JE ECE (CBT I) Mock Test- 1 - Question 44

What should come next in the following letter sequence:

A A B A B C A B C D A B C D E A B C D E F A B C D E F G A B C D E F G

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 44 The sequence is A AB ABC ABCD.........
RRB JE ECE (CBT I) Mock Test- 1 - Question 45

In the given figure, the circle represents youths, the triangle represents the persons who are in jobs, and the rectangle represents the illiterate person.

Which of the following numbers depicts illiterate youths who have jobs?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 45 The number of illiterate youths who have a job are three.
RRB JE ECE (CBT I) Mock Test- 1 - Question 46

What comes in place of a question mark?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 46 The numbers obtained by squaring the numbers at the bottom are combined together physically to get the number in the upper part.
RRB JE ECE (CBT I) Mock Test- 1 - Question 47

what comes in place of?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 47 The given figure contains numbers 1 to 6 in three alternate segments, the smaller number being towards the outside and the numbers 14 to 19 in the remaining three alternate segments with the smaller number towards the inside.
RRB JE ECE (CBT I) Mock Test- 1 - Question 48

Find the water image of the object given in the question figure.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 48

RRB JE ECE (CBT I) Mock Test- 1 - Question 49

A Piece of paper is folded and cut as shown below in the question figure. From the given answer figures, indicate how it will appear when opened.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 49

RRB JE ECE (CBT I) Mock Test- 1 - Question 50

In the following questions, four/five figures are given. Three/four are similar in a certain way, and so form a group. Find out which one of the figures does not belong to that group.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 50 In all other figures, the number of pins at the top of the figure equals the number of sides of the figure.
RRB JE ECE (CBT I) Mock Test- 1 - Question 51

Which of the following words cannot be formed from 'GENERALIZATION'?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 51 Using the letters of the given word, the word 'LIZARD' cannot be formed.
RRB JE ECE (CBT I) Mock Test- 1 - Question 52

If ‘+’ stands for multiplication, ‘x’ stands for division, ‘–’ stands for addition, and ‘÷’ stands for subtraction, what is the answer for the following equation?

20 – 5 ÷ 18 x (3 + 2) = ?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 52

Given expression is

20 - 5 +18x (3 + 2) = ?

After conversions:

? = 20 + 5 —18 ÷(3 x 2)

or, ? = 20 + 5 - 18 +6

or, ? 20 + 5 - 3

or. ? = 25 - 3 = 22

RRB JE ECE (CBT I) Mock Test- 1 - Question 53

The day on 18.09.1977 was Sunday. A couple was married on this date. In the next 15 years, how many marriage anniversaries would fall on Sunday?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 53 1977 is an ordinary year. We know that the calendar of an ordinary year repeats after 6 yrs or 11 yrs.

Therefore,

Number of odd days from 18.09.1977 to 18.09.1983=7, i.e., 0 odd day

It means that in 1983, 18th September would fall on Sunday.

and number of odd days from 18.09.1977 to 18.09.1988 = 14, i.e., 0 odd days.

Now, it is clear that 2 marriage anniversaries would fall on Sunday in the next 15 yr.

RRB JE ECE (CBT I) Mock Test- 1 - Question 54

In a row of girls, if Rohini who is 12th from the left and Mihika who is 9th from the right, if they interchange their seats, then Rohini becomes 18th from the left. How many girls are there in the row?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 54 When Rohini and Mihika interchange their places, then Rohini becomes on 18th place, which means Rohini, who was on 12th place, comes at the 6th place after crossing 5 places. Therefore, there are 5 girls between Rohini and Mihika. So, the total number of the girls in the row = (18 + 9) -1 = 26 or (15 + 12) – 1 = 26.
RRB JE ECE (CBT I) Mock Test- 1 - Question 55

Study the diagram given below and answer the question.

Which part represents those clerks who are graduates and have government jobs?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 55 'H' represents those clerks who are graduates and have government jobs.
RRB JE ECE (CBT I) Mock Test- 1 - Question 56

Who was recently elected as the Deputy Chairman of the Rajya Sabha in the Parliament?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 56 Harivansh Narayan Singh, Rajya Sabha MP from Bihar since 2014, was recently elected as the new Deputy Chairman of Rajya Sabha in the Parliament.

Earlier in his career, he was a journalist with 'Prabhat Khabar' and then was chosen as the media advisor to former Prime Minister Chandra Shekhar.

RRB JE ECE (CBT I) Mock Test- 1 - Question 57

Recently, the Ministry of External Affairs organised the 11th World Hindi Conference at which of the following Indian ocean states?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 57 11th edition of the World Hindi Conference was organised in Swami Vivekanand International Convention Centre, Pailles Mauritius.

The theme of the Conference: "Hindi Vishwa Aur Bhartiya Sanskriti''. It was organised by the Ministry of External Affairs, Government of India, in association with the Government of Mauritius.

RRB JE ECE (CBT I) Mock Test- 1 - Question 58

Right to Information, an important legislative act to promote transparency & strengthen the democracy of India, came into being in which year?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 58 On October 12, 2005, Right To Information came into being after the passage of an Act in the Indian parliament to bring in transparency in governmental procedures and end corruption

Using rtionline.gov.in, citizens of India can seek information to turn India into a participatory democracy.

According to the government guidelines, 'Any person who desires to obtain information shall submit a written or electronic request in English or Hindi or in the official language of the area to the Central Public Information Officer or his/her counterpart at the state level.'

RRB JE ECE (CBT I) Mock Test- 1 - Question 59

Which Indian state excelled to be the top performer in the recently released 'Ease of Living Index 2018' by the Ministry of Housing & Urban Affairs?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 59 Andhra Pradesh topped the charts among the Indian States in terms of "Ease of Living Index 2018" rankings launched by the Ministry of Housing and Urban Affairs, followed by Odisha and Madhya Pradesh.

The Index seeks to assist states in undertaking a 360-degree assessment of their strengths, weaknesses, opportunities, and threat & innovation to perform in the governance, identity and culture, education, health, safety and security, economy, affordable housing, land use planning etc. for its residents.

RRB JE ECE (CBT I) Mock Test- 1 - Question 60

Which of the following government entities started 'Seva Bhoj Yojana’ - a scheme to reimburse the central share of CGST and IGST on food, prasad, langar etc., offered by religious and charitable institutions?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 60 The Ministry of culture recently launched the Seva Bhoj Yojana, a scheme to reimburse the central share of CGST and IGST on food, prasad, langar etc., offered by religious and charitable institutions.

Institutions like Temples, Gurudwara, Mosque, Church, Dharmik Ashram, Dargah etc., who are established and serving free food for more than 5 years to more than 5000 people every month without any discrimination, are the eligible entities.

RRB JE ECE (CBT I) Mock Test- 1 - Question 61

Google recently unveiled ____________ which will quickly render any PDF with Indian language content into editable text using Artificial Intelligence.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 61 During the 4th edition of the 'Google for India' event, the Project Navlekha was unveiled, which in Sanskrit means "a new way to write". It will quickly render any PDF with Indian language content into editable text using Artificial Intelligence.

Under the project, the registered publishers will be provided with a free web hosting service and a branded domain for 3 years and have AdSense support to help monetise their content.

RRB JE ECE (CBT I) Mock Test- 1 - Question 62

Which of the following Indian states launched a scheme, 'Kanyashree', to incentivise adolescent girl child education to combat the issue of child marriages?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 62 Kanyashree was launched in 2013 by the West Bengal government to prevent child marriage in economically backward sections with an annual household income of ₹1.2 lakh.

Eligible girls got ₹1,000 a year scholarship from ages 13 to 18 years and a one-time grant of ₹25,000 on remaining unmarried till 18 years. More than 5 million girl children benefited from the scheme.

Recently the annual income limit was relaxed to any girl child within the age limit.

RRB JE ECE (CBT I) Mock Test- 1 - Question 63

Which of the following government institutions launched "Pitch to MOVE", a business opportunity platform for budding entrepreneurs?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 63 NITI Aayog recently launched "Pitch to MOVE", a business opportunity platform for budding entrepreneurs to promote their business ideas.

It aims to identify and incentivise the start-ups, which will help the Government realize its vision of Shared, Connected, Intermodal and Environment-Friendly Mobility for India.

The objective is to harness the latest disruption for generating employment and growth in our country.

RRB JE ECE (CBT I) Mock Test- 1 - Question 64

Ghoomar is a popular traditional folk dance from which region in India?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 64 Ghoomar is a traditional dance from Rajasthan's Bhil tribe performed only by the women during celebrations pertaining to Goddess Saraswathi, Diwali, Holi etc.

Attire for women: Ghagras along with colourful chunaris and heavy embroidery. Works garment.

RRB JE ECE (CBT I) Mock Test- 1 - Question 65

Which of the following International Organisations are headquartered in Washington D.C., USA?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 65

RRB JE ECE (CBT I) Mock Test- 1 - Question 66

Match the following trophies with their respective sports

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 66

RRB JE ECE (CBT I) Mock Test- 1 - Question 67

Dhauladhar National Park is situated in which of the following Indian states?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 67 Dhauladhar National Park is situated at a distance of 13kms from the city of Palampur in the Indian state of Himachal Pradesh. It is filled with exotic flora and fauna and is home to different types of deer, red fox, sambhar, Asiatic lion, angora rabbits, black bears and leopards. It covers an area of 30 acres.
RRB JE ECE (CBT I) Mock Test- 1 - Question 68

Daman & Diu is the Union territory of India comprising 2 different areas separated by which of the following?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 68 The Arabian Sea separates the two areas of the union territory, Daman & Diu, bordered by the state of Gujarat.

With an area of only 112 square km, it is the second smallest UT of India after Lakshadweep.

RRB JE ECE (CBT I) Mock Test- 1 - Question 69

Recently, BOMBAY NATURAL HISTORY SOCIETY opened its regional centre at which of the following important Wetlands in India?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 69 Recently, BOMBAY NATURAL HISTORY SOCIETY opened its regional centre in the premises of ‘The Wetland Research and Training Centre’ (WRTC) of the Chilika Development Authority (CDA) at Chandrapur in Chilika.

Here, BNHS would be engaged in identifying the air route of the migratory birds flocking the Chilika lake during winter & sample collection, training related to bird census, among other important conservatory purposes.

RRB JE ECE (CBT I) Mock Test- 1 - Question 70

With which of the following Financial Institutions would you associate 'Prompt Corrective Action'?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 70 The Reserve Bank of India has specified certain regulatory guidelines, as a part of the prompt corrective action (PCA) framework, in terms of 3 parameters,

- capital to risk-weighted assets ratio (CRAR),

- net non-performing assets (NPA) and

- Return on Assets (RoA), applicable only to commercial banks and not extended to co-operative banks, non-banking financial companies (NBFCs) & other financial institutes

RRB JE ECE (CBT I) Mock Test- 1 - Question 71

Which of the following rays exhibits the property of a light wave?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 71 Gamma rays, X-rays, microwaves, and radio waves behave as a light wave, and they exhibit properties such as reflection, refraction, diffraction etc.
RRB JE ECE (CBT I) Mock Test- 1 - Question 72

A ball thrown vertically upwards with an initial velocity of 19.6 m/s returns in 4 seconds. Which one of the following does the ball attain the maximum height?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 72 Time taken by the ball to the Highest point = 4/2

= 2 Second

Now

RRB JE ECE (CBT I) Mock Test- 1 - Question 73

Which amongst the following is the most elastic?

RRB JE ECE (CBT I) Mock Test- 1 - Question 74

A transformer works with

RRB JE ECE (CBT I) Mock Test- 1 - Question 75

The material having maximum ductility is:

RRB JE ECE (CBT I) Mock Test- 1 - Question 76

Magnetic effect of current was discovered by

RRB JE ECE (CBT I) Mock Test- 1 - Question 77

Modern communication systems use -

RRB JE ECE (CBT I) Mock Test- 1 - Question 78

RRB JE ECE (CBT I) Mock Test- 1 - Question 79

When a body is immersed in a liquid, the force acting on it is?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 79 According to the Principle of Flotation, when a body is immersed in a fluid, two forces act on it: (1) The weight of the body acting vertically downward through the centre of gravity of the body, and (2) The upthrust of the fluid acting vertically upward through the centre of gravity of the fluid displaced, i.e. centre of buoyancy. The upthrust is also termed as buoyant force.
RRB JE ECE (CBT I) Mock Test- 1 - Question 80

Which of the following is the best conductor of Electricity?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 80 This is because saltwater is a good conductor of electricity. Salt molecules are made of sodium ions and chloride ions. (An ion is an atom that has an electrical charge because it has either gained or lost an electron.)
RRB JE ECE (CBT I) Mock Test- 1 - Question 81

Mach number is used in connection with the speed of -

RRB JE ECE (CBT I) Mock Test- 1 - Question 82

Most soluble in water is —

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 82 Water is polar, so any compound that is polar is soluble in water. Sugar (C12H22O11) is a polar covalent molecule. When it dissolves in water, the weak bonds between the carbon, hydrogen and oxygen atoms are broken.
RRB JE ECE (CBT I) Mock Test- 1 - Question 83

If linear momentum is increased by 50%, the kinetic energy will increase by

RRB JE ECE (CBT I) Mock Test- 1 - Question 84

Which of the following is not a semiconductor?

RRB JE ECE (CBT I) Mock Test- 1 - Question 85

Which is critically endangered and species

RRB JE ECE (CBT I) Mock Test- 1 - Question 86

Which of the following colours will scatter the most while passing through a prism?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 86 Lights of different colour depending upon their scattering in ascending order are violet, indigo, blue, green, yellow, orange and red.
RRB JE ECE (CBT I) Mock Test- 1 - Question 87

Brass gets discoloured in the air due to the presence of which gas in the air?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 87 Hydrogen sulphide can corrode metals such as iron, steel, copper, and brass, tarnish silverware, discolour copper and brass utensils, cause yellow or black stains on fixtures and alter the appearance and taste of cooked foods.
RRB JE ECE (CBT I) Mock Test- 1 - Question 88

Bleaching powder is made from —

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 88 A mixture with lime and calcium chloride, it is marketed as chlorine powder or bleaching powder for water treatment and as a bleaching agent.
RRB JE ECE (CBT I) Mock Test- 1 - Question 89

At high altitudes, the boiling point of water reduces because -

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 89 As we go to higher altitudes, the atmospheric pressure reduces, which actually lowers the boiling point of water.
RRB JE ECE (CBT I) Mock Test- 1 - Question 90

The point through which the whole weight of the body acts, irrespective of its position, is known as

RRB JE ECE (CBT I) Mock Test- 1 - Question 91

Vitamin A is also known as?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 91 Retinol: Retinol is an active form of vitamin A. It produces pigments in the retina of the eye.
RRB JE ECE (CBT I) Mock Test- 1 - Question 92

Avogadro constant, NA is the number of molecules in one mole of a substance, and its value (NA) is

RRB JE ECE (CBT I) Mock Test- 1 - Question 93

Kaziranga National Park is located in the state of

RRB JE ECE (CBT I) Mock Test- 1 - Question 94

Ginger is an example of –

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 94 Ginger is a rhizome (modified plant stem).
RRB JE ECE (CBT I) Mock Test- 1 - Question 95

When CaC2 is heated in atmospheric nitrogen in an electric furnace, the compound formed is ______.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 95 Solubility of alkali metal hydroxide increases as the size of the alkali metal increases.
RRB JE ECE (CBT I) Mock Test- 1 - Question 96

Brass is an alloy of —

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 96 Zinc and Copper: Brass is a metallic alloy that is made of copper and zinc.
RRB JE ECE (CBT I) Mock Test- 1 - Question 97

Dioptre is the unit of:

RRB JE ECE (CBT I) Mock Test- 1 - Question 98

In which of the following blocks of the periodic table are the Alkali & Alkaline earth metals included?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 98 The alkali and alkaline earth metals are included in the s-block of the periodic table.
RRB JE ECE (CBT I) Mock Test- 1 - Question 99

Cockroach is a:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 99 Cockroaches are omnivores and can eat almost any type of organic material to survive, making them one of the healthiest insects on the planet. Although they prefer sweets, meats and starches, they also consume other items such as hair, books and decaying matter.
RRB JE ECE (CBT I) Mock Test- 1 - Question 100

Permanent hardness of water may be removed by the addition of ____.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 1 - Question 100 Sodium carbonate, Na2CO3, is also known as washing soda. It can remove temporary and permanent hardness from water.

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