RRB JE ECE (CBT I) Mock Test- 9

# RRB JE ECE (CBT I) Mock Test- 9

Test Description

## 100 Questions MCQ Test RRB JE Mock Test Series for ECE | RRB JE ECE (CBT I) Mock Test- 9

RRB JE ECE (CBT I) Mock Test- 9 for Railways 2022 is part of RRB JE Mock Test Series for ECE preparation. The RRB JE ECE (CBT I) Mock Test- 9 questions and answers have been prepared according to the Railways exam syllabus.The RRB JE ECE (CBT I) Mock Test- 9 MCQs are made for Railways 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for RRB JE ECE (CBT I) Mock Test- 9 below.
Solutions of RRB JE ECE (CBT I) Mock Test- 9 questions in English are available as part of our RRB JE Mock Test Series for ECE for Railways & RRB JE ECE (CBT I) Mock Test- 9 solutions in Hindi for RRB JE Mock Test Series for ECE course. Download more important topics, notes, lectures and mock test series for Railways Exam by signing up for free. Attempt RRB JE ECE (CBT I) Mock Test- 9 | 100 questions in 90 minutes | Mock test for Railways preparation | Free important questions MCQ to study RRB JE Mock Test Series for ECE for Railways Exam | Download free PDF with solutions
 1 Crore+ students have signed up on EduRev. Have you?
RRB JE ECE (CBT I) Mock Test- 9 - Question 1

### The height of a square base right prism is 15 cm. If the total surface area of the prism is 608 cm2, then what will be the volume of the prism?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 1 Let the side of the square base be ‘a’.

Now, total surface area = Perimeter of square base × Height

+ 2 × Area of square base.

⇒ 608 = 4a × 15 + 2 × a2 ⇒ a2 + 30a –304 = 0 ⇒ a = 8

∴Volume of prism = Area of base × Height

= a2 × 15 = 8 × 8 × 15 = 960 cm3

RRB JE ECE (CBT I) Mock Test- 9 - Question 2

### If the angles of a pentagon are in the ratio 1 : 3 : 6 : 7 : 10, then the smallest angle is:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 2 Suppose the angles of a pentagon are

x°, 3x°, 6x°, 7x°, 10x°

But x° + 3x° + 6x° + 7x° + 10x° = (2x5 -4) x 90°

or 27x° = 6 x 90°

or x = 20°

RRB JE ECE (CBT I) Mock Test- 9 - Question 3

### What will be the value of x in the infinite series

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 3

Or x2 = 6 + x

Or x2 - x 6 = 0

Or (x-3) (x+2) = 0

∴ x = 3

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

If a (tanθ + cotθ) = 1, sinθ + cosθ = b with 0° < θ < 90°, then the relation between a and b is:

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

a (tanθ + cotθ) = 1[Given]

sinθ + cosθ = b[Given]

a = sinθ cosθ.................(i)

Also, sinθ + cosθ = b

Squaring both sides,

sin2θ + cos2θ + 2sinθ cosθ = b2

1 + 2 a = b2 ⇒ 2a = b2 – 1[From ⇒ equ. (i)]

RRB JE ECE (CBT I) Mock Test- 9 - Question 5

The driver of an ambulance sees a school bus 40 meters ahead of him. After 20 seconds, the school bus is 60 meters behind. If the speed of the ambulance is 30 km/hr, then what is the speed of the school bus?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 5 Relative Speed,

= (Total.distance/Total.time)

=60+40/20

= 5 m/s =5×18/5 = 18 kmph

Relative Speed = (speed of ambulance - speed of school bus)

Speed of school bus = speed of ambulance - relative speed.

= 30-18 = 12 kmph.

RRB JE ECE (CBT I) Mock Test- 9 - Question 6

At what percent above the cost price must an article be marked so that the seller gains 33% after allowing the customer a discount of 5% ?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 6 Let the marked price be ₹x

Let the Cost price be ₹y

Selling Price = x - 5% of x

x = 95x/100 = 19x/20

y + 33% of y = 19x/20

7y = 5x

x = 7/5 y = y + 2/5 y = y + 40% of y

RRB JE ECE (CBT I) Mock Test- 9 - Question 7

If (x11+1) is divided by (x+1), then the remainder is :

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 7

p(x) = x11 +1

Divisor = x+1

∴ Remainder = p(−1)=(−1)11 +1= −1 + 1 = 0

RRB JE ECE (CBT I) Mock Test- 9 - Question 8

Evaluate : cos80o/sin10o + cos 59o cosec 31o

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 8

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

The measurement of each angle of a polygon is 160°. The number of its sides is:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 9 Let n be the sides of the polygon

or 16n = (2n - 4) x 9

or 16n = 18n - 36

2n = 36 ⇒ n = 18

∴ the number of sides of polygon are 18.

RRB JE ECE (CBT I) Mock Test- 9 - Question 10

Two towers of the same height stand on opposite sides of a road 100 m wide. At a point on the road between the towers, the elevations of the towers are 30° and 45°. Find the height of the towers and the position of the point from the farthest tower.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 10

Let AB, CD are towers

E is the point between road BC.

Then in △DCE

CD = EC = X = AB

IN △ABE

BE= √3x then

Position of the farthest tower from point = 63.4 mtr.

RRB JE ECE (CBT I) Mock Test- 9 - Question 11

If (a/b)x−1 = (b/a)x−3 ,then the value of x is:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 11

(a/b)x−1 = (b/a)x−3 = (a/b)−(x−3) = (a/b)3−x

∴ x - 1 = 3 - x or 2x = 4

∴ x = 2

RRB JE ECE (CBT I) Mock Test- 9 - Question 12

If the perimeter of an equilateral triangle is 36.9 metre and the length of an altitude is 8 metre, then the area of the triangle is:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 12 Perimeter of the equilateral triangle of side x = 36.9 m

∴ side of equilateral triangle x = 36.9/3 = 12.3 m

height = 8

hence area = 1/2×12.3×8 = 49.2 m2

RRB JE ECE (CBT I) Mock Test- 9 - Question 13

In what ratio Martina should mix two varieties of juice worth Rs. 52 per liter and Rs. 74 per liter, so that by selling the mixture at Rs.71.28 per liter she can earn a profit of 8%?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 13

RRB JE ECE (CBT I) Mock Test- 9 - Question 14

40% of the students in a school are girls. If the number of boys is 1680, then what is the total number of students?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 14

% of boys = 100 – 40 = 60%

60% of x = 1680

x = (1680 × 100)/60

x = 2800

RRB JE ECE (CBT I) Mock Test- 9 - Question 15

Prem invested a certain sum of money in a simple interest. It amounts to Rs 300 at the end of 3 years and to Rs 400 at the end of 8 year. What was the rate of interest in which he invested his sum?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 15

Let principal be P and rate of interest be r%

At the end of another 5 years means 3 + 5 = 8 Years.

On subtracting Eq. (i) from Eq. (ii)

∴ p x r = 2,000

240 x r = 2000

r = 8.33%

RRB JE ECE (CBT I) Mock Test- 9 - Question 16

10 men can complete a work in 8 days. 20 women can complete the same work in 6 days. In how many days 16 men and 18 women can complete the same work, working together ?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 16

10m → 8 days ⇒ 20m → 4 days ⇒ 1m → 80 days

20w → 6 days ⇒ 20w → 6 days ⇒ 1w → 120 days

∴ 2m = 3w

Thus, 16m + 18w = 24w + 18w = 42w

20w x 6 = 42w x

(Where x is the number of days taken by 42 women)

∴ x = 20/7 days ⇒ 2(6/7) days

RRB JE ECE (CBT I) Mock Test- 9 - Question 17

461 + 462 + 463 + 464 + 465 is divisible by:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 17

461 [1+4+42+43+44] = 461 [1+4+ 16 + 64 +256] = 461 x 341

Since 341 is divisible by 11, then the given expression is also divisible by 11.

RRB JE ECE (CBT I) Mock Test- 9 - Question 18

A cane contains a mixture of two liquids 'A' and 'B' in the ratio 7 : 5. When 9 liters of mixture are drawn off and the cane is filled with 'B', the ratio of 'A' and 'B' becomes 7 : 9 liters. Liter of Liquid 'A' contained by the cane initially was?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 18

According to the question

4 units = 9 litres

1 unit = 9/4 litres

12 units = 94×12 = 27 litres

Initially solution was = 27+9 = 36litres

Quantity of liquid 'A' initially = ‘712×36 = 21 litres

RRB JE ECE (CBT I) Mock Test- 9 - Question 19

DIRECTIONS: DIRECTIONS: Study the following graph carefully and answer the questions that follow:

No. of students appearing for aptitude test from various cities (in thousands).

What is the average number of students appearing for aptitude tests from all the cities together?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 19

(30 + 22.5 + 37.5 + 17.5 + 32.5)/5 = 28

RRB JE ECE (CBT I) Mock Test- 9 - Question 20

DIRECTIONS: DIRECTIONS: Study the following graph carefully and answer the questions that follow:

No. of students appearing for aptitude test from various cities (in thousands).

What is the ratio of the number of students appearing for the aptitude test for city B to that of city A?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 20

22.5 : 30

3 : 4

RRB JE ECE (CBT I) Mock Test- 9 - Question 21

DIRECTIONS: DIRECTIONS: Study the following graph carefully and answer the questions that follow:

No. of students appearing for aptitude test from various cities (in thousands).

The number of students appearing for the aptitude test from city D is approximately what percentage of the number of students appearing for the aptitude test from city C?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 21

17.5×100/37.5 = 47%

RRB JE ECE (CBT I) Mock Test- 9 - Question 22

DIRECTIONS: DIRECTIONS: Study the following graph carefully and answer the questions that follow:

No. of students appearing for aptitude test from various cities (in thousands).

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 22

55 : 80

= 11 : 16

RRB JE ECE (CBT I) Mock Test- 9 - Question 23

The batting average of a batsman in 57 innings is 58 runs. He was out for a duck in 7 innings. His batting average for remaining innings is :

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 23 Total runs of 57 innings = 57 x 58

∴ Average of remaining (57-7) or 50 innings

= 57×58/50 = 66.12

RRB JE ECE (CBT I) Mock Test- 9 - Question 24

If sin(x+y)/sin(x−y) = a+b/a−b , then the value of tan x/tan y is:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 24

RRB JE ECE (CBT I) Mock Test- 9 - Question 25

A and B can do a piece of work in 15 days. B and C can do the same work in 12 days and C and A in 10 days. How many days will A take to complete the work alone?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 25

Thus, A completes 2.5 unit work in a day.

Thus, total time required by A = 60/25 = 24 days.

RRB JE ECE (CBT I) Mock Test- 9 - Question 26

If 2 men and 3 women can do a piece of work in 8 days and 3 men and 2 women in 7 days. In how many days can the work be done by 5 men and 4 women working together?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 26

|2 x 8 - 3 x 7| men’s work = |3x 8 - 2 x 7| women’s work.

∴ 5 men’s work = 10 women’s work

∴ 1 men’s work = 2 women’s work

2 men’s work = 4 women’s work

∴ Days taken by 5 men + 4 women = 14 women are 7x8/14 = 4 days

RRB JE ECE (CBT I) Mock Test- 9 - Question 27

If a and b are two distinct positive numbers, then which of the following is true?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 27

Let α = 16 & b = 9

Option (α) : LHS =

Hence, option (α) is wrong.

Option (α) : LHS =

Hence, option (b) is wrong.

RRB JE ECE (CBT I) Mock Test- 9 - Question 28

5 year ago, the father’s age was 3 times his son’s age. 5 years hence the ratio between the ages of the father and the son becomes 11: 5. Find the father’s present age.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 28

Father Son

Old ratio 3 : 1

New ratio 11 : 5

Let, 5 years age father’s age was 3x years, where

x=(5+5)×(11−5)/3×5−1×11 =10×6/4 =15

∴ Father’s age (5 years ago) = 3 × 15 = 45 years

∴ His present age = 45 + 5 = 50 years

RRB JE ECE (CBT I) Mock Test- 9 - Question 29

P and Q starting simultaneously from two different places proceed towards each other at a speed of 20 km/hour and 30 km/hour respectively. By the time they meet each other, Q has covered 36 km more than P. The distance (in k.m.) between the two places is:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 29 Let the distance = x km

Let them meet when P travels y km.

then, Q travels in the same time x – y km

from question,

(x – y) – y = 36

x – 2y = 36 .......(i)

Also, 20 × y = 30 (x–y) [∵Time is same]

∴y/x−y−=3/2

2y = 3x – 3y

5y = 3x ........(ii)

Putting the value of y from (ii) to (i),

x−6x/5=36⇒−x/5=36⇒x=180 km

RRB JE ECE (CBT I) Mock Test- 9 - Question 30

A man walks from A to B at the rate of 5 km per hour and returns back at the rate of 3 kmph. What is the average speed for the whole journey ?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 30 We know that

Average speed = 2xy / x+y

Here, x= 5 km per hour

y = 3 km per hour

therefore, Average speed = 2*5*3 / 5+3 = 30/8 = 15 kmph.

RRB JE ECE (CBT I) Mock Test- 9 - Question 31

What will come in place of the question mark (?) in the following number series?

34, 203, 428, 717, ?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 31

34 + 132 = 203

203 + 152 = 428

428 + 172 = 717

717 + 192 = 1078

RRB JE ECE (CBT I) Mock Test- 9 - Question 32

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:

Statements:

1. India is manufacturing a much greater number of two wheelers than it did a decade back.

2.The quality has also improved quite a lot.

Assumption :

I.We are exporting two wheelers.

II. Our two-wheeler industry has made commendable progress.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 32 From the above statement it can be said that the two-wheeler industry has made commendable progress as manufacturing of two wheeler vehicles has increased significantly but does not mean they are exporting two wheeler vehicles.
RRB JE ECE (CBT I) Mock Test- 9 - Question 33

If South West becomes North, North East becomes South and so on, what will East become?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 33

RRB JE ECE (CBT I) Mock Test- 9 - Question 34

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

Encouragement : Victory : : Frustration : ?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 34 Encouragement related to Victory same way Frustration related to Failure
RRB JE ECE (CBT I) Mock Test- 9 - Question 35

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:

Statement

No lion is dog.

No dog is hen.

Conclusion

I. No lions are hen.

II. Some lions are hens

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 35

Both I and II conclusions are false but are complementary pairs, hence either I or II follows.

RRB JE ECE (CBT I) Mock Test- 9 - Question 36

Which of the following figures is the correct mirror image of the given figure?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 36

RRB JE ECE (CBT I) Mock Test- 9 - Question 37

How many meaningful english words of three or more letters can be formed from the words “TONE” beginning with “N” and without repeating any letter ?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 37

TON, NOTE, NOT and NET. These meaningful words can be formed from the given word “TONE.”

RRB JE ECE (CBT I) Mock Test- 9 - Question 38

Choose the one which is different or odd from the following.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 38 Except aluminum, iron and copper, Brass is an alloy of copper and zinc.
RRB JE ECE (CBT I) Mock Test- 9 - Question 39

Which one of the following diagrams represents the correct relationship between DOCTORS, SURGEONS and NURSES.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 39

RRB JE ECE (CBT I) Mock Test- 9 - Question 40

In the given figure, the Circle represents Indian, the Square represents Dancer and the triangle represents Musicians. Find the region of Indian Musicians.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 40 As, Circle represents Indian and triangle represents Musicians so the only N is common in both and it is the answer. So the answer is (D).
RRB JE ECE (CBT I) Mock Test- 9 - Question 41

The option which is the water reflection of the word given below-

Question Figure:

RRB JE ECE (CBT I) Mock Test- 9 - Question 42

Arrange the given words in the sequence in which they occur in the dictionary.

1. Waste

2. Wrong

3. Witty

4. Worcester

5. Warlike

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 42

(5) Warlike, (1) Waste, (3) Witty, (4) Worcester, (2) Wrong

RRB JE ECE (CBT I) Mock Test- 9 - Question 43

In a code language, A is written as B, B is written as C, C is written as D and so on, then how will STUDY be written in that code language ?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 43 The letters are coded by moving them 1 step forward.
RRB JE ECE (CBT I) Mock Test- 9 - Question 44

Pointing to a boy in a photograph, Rani said, "His mother's only daughter is my mother". How is Rani related to that boy?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 44

RRB JE ECE (CBT I) Mock Test- 9 - Question 45

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:

Statement:

1. Due to contamination of water, a large number of people were admitted to hospital.

2. The symptoms were of Typhoid.

Conclusions:

I. Contamination of water may lead to Typhoid.

II. Typhoid is a contagious disease.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 45 From the statement, it is not clear that Typhoid is contagious. Hence, only conclusion 1 is true.
RRB JE ECE (CBT I) Mock Test- 9 - Question 46

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

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 46

RRB JE ECE (CBT I) Mock Test- 9 - Question 47

In each of the questions given below, a statement has been given, then two preconceptions under which the numbers I and II have been given. A preconceived or perceived assumption is called prediction. You have to consider the statements and the assumptions given below and then decide which pre-concepts are contained in the statement. Please give - (A) if only I is implicit. (B) if only II is implicit. (C) if neither I nor II is implicit. (D) if both I and II are implicit.

Statement:

Profit from the investment in shares of company X happened by serendipity.

Assumptions:

I.Luck can play a role in deciding the fate of shares of X.

II.Luck is a must when it comes to investment in shares.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 47 Assumption I is implicit since the statement clearly states that the profit happened by serendipity (i.e luck). Hence assumption I is implicit.

Assumption II is not implicit since the statement does not state if luck is a mandatory thing for profit in shares.

RRB JE ECE (CBT I) Mock Test- 9 - Question 48

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 sword are knife.

All knife are weapon.

Conclusions:

I. Some weaponsthe are sword.

II. Some knife are sword.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 48

As per the above Venn diagram, both conclusion I and II is a definite case hence both follow.

RRB JE ECE (CBT I) Mock Test- 9 - Question 49

In each of the following questions, select the one which is different from the others.

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 49

Nose, ear and tongue are sense organs.

Teeth is not a sense organ

RRB JE ECE (CBT I) Mock Test- 9 - Question 50

A, B, C, D and E each have different heights. D is only shorter than B. E is shorter than A and C. Who is the shortest of them?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 50

According to the question,

B > D

A/C > E

B > D > A/C > E

Clearly, shortest = E

RRB JE ECE (CBT I) Mock Test- 9 - Question 51

Which one of the given responses would be a meaningful order of the following ?

1- Wall

2- Clay

3- House

4- Room

5- Bricks

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 51

2- Clay

5- Bricks

1-Wall

4- Room

3- House

RRB JE ECE (CBT I) Mock Test- 9 - Question 52

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

Question figure:

RRB JE ECE (CBT I) Mock Test- 9 - Question 53

6 days from today, it will be the 20th of the month, then what was the date before yesterday?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 53

before ----- 12th

yesterday---13th

today--------14th

1-------------15th

2-------------16th

3-------------17th

4-------------18th

5-------------19th

6-------------20th

RRB JE ECE (CBT I) Mock Test- 9 - Question 54

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 follows

Statements :

All boys are girls.

No girl is a father.

Conclusions :

I. All girls are boys.

II. No boy is a father

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 54

As per the above Venn Diagram, only conclusion II follows because all boys are girls and no girl is father, therefore no boy is father is a definite case.

RRB JE ECE (CBT I) Mock Test- 9 - Question 55

If every Sunday of any month is on the fourth, eleventh, eighteenth and twenty fifth, then which day will be the last day of the month if the first day of the month is Thursday ?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 55 First day is thursday means 3rd 10th ,17th, 24th and 30th day will be sunday,We can not determine the last day of the month as we don't have information regarding i.e whether given month have 30 or 31 days.
RRB JE ECE (CBT I) Mock Test- 9 - Question 56

When the East India Company was formed, the Mughal emperor in India was_____ .

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 56 The English East India Company was founded in 1600. Akbar was Mughal Emperor from 1556 until his death in 1605.
RRB JE ECE (CBT I) Mock Test- 9 - Question 57

Buland Darwaza was built by -

RRB JE ECE (CBT I) Mock Test- 9 - Question 58

Which one of the following countries shares the shortest boundary with India?

RRB JE ECE (CBT I) Mock Test- 9 - Question 59

Who is the current Governor of Haryana?

RRB JE ECE (CBT I) Mock Test- 9 - Question 60

The DRDO was established in:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 60 The DRDO was established in 1958 with just 10 laboratories to enhance the research work in the defence sector.
RRB JE ECE (CBT I) Mock Test- 9 - Question 61

The maximum canal irrigated area is in the state of:

RRB JE ECE (CBT I) Mock Test- 9 - Question 62

The Bhakra Nangal dam is built on the river?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 62

Bhakra Dam is built on the river Satluj in Bilaspur, Himachal Pradesh, northern India.

RRB JE ECE (CBT I) Mock Test- 9 - Question 63

The first meeting of India and _______________ Joint Committee on Border Haats was held in Agartala recently.

RRB JE ECE (CBT I) Mock Test- 9 - Question 64

Third Battle of Panipat was fought between–

RRB JE ECE (CBT I) Mock Test- 9 - Question 65

‘Dudhwa National Park’ is situated in-

RRB JE ECE (CBT I) Mock Test- 9 - Question 66

Part III of the Constitution of India relates to?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 66 Fundamental Rights are mentioned part III of the Indian Constitution.
RRB JE ECE (CBT I) Mock Test- 9 - Question 67

By which name/names is our country mentioned in the Constitution?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 67 The constitution states: India, also known as Bharat, is a Union of States. It is a Sovereign Socialist Secular Democratic Republic with a parliamentary system of government. The Republic is governed in terms of the Constitution of India which was adopted by the Constituent Assembly on 26th November, 1949 and came into force on 26th January, 1950. The Constitution provides for a Parliamentary form of government which is federal in structure with certain unitary features. The constitutional head of the Executive of the Union is the President.
RRB JE ECE (CBT I) Mock Test- 9 - Question 68

Under the Ayushman Bharat Yojana, Prime Minister Narendra Modi has inaugurated the first Health and Wellness Centre in -

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 68 Prime Minister Narendra Modi inaugurated the first Health and Wellness Centre in Bijapur, Chhattisgarh to mark the launch of Ayushman Bharat Yojana- National Health Protection Mission (AB-NHPM).
RRB JE ECE (CBT I) Mock Test- 9 - Question 69

Who has been appointed as Finance Secretary?

RRB JE ECE (CBT I) Mock Test- 9 - Question 70

Who founded the Mughal dynasty in India?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 70 Babur had founded the Mughal rule in India in 1526 AD.
RRB JE ECE (CBT I) Mock Test- 9 - Question 71

Which process is used in order to make ghee ?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 71 Hydrogenation is the process of adding hydrogen to an edible vegetable oil using a catalyst to produce fat with semi solid.
RRB JE ECE (CBT I) Mock Test- 9 - Question 72

Which of the following is called ring disease in plants?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 72 Wilt of potato is also known as ring disease because brown ring is formed on the Xylem of the plant. The factor of this is Pseudomonas solanacearum bacteria. In this disease the conduction system of the plant is also affected.
RRB JE ECE (CBT I) Mock Test- 9 - Question 73

The density of gas is maximum at which of the following factors?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 73 The density of the gas is maximum at Low temperature and, high pressure.The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. The symbol most often used for density is ρ, although the Latin letter D can also be used.
RRB JE ECE (CBT I) Mock Test- 9 - Question 74

Which of the following animals do belong to the mollusca phylum?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 74 Octopus belongs to the phylum Mollusca. Mollusca is a large phylum of invertebrate animals whose members are known as molluscs or mollusks. Around 85,000 extant species of molluscs are recognized.
RRB JE ECE (CBT I) Mock Test- 9 - Question 75

Which of the following genes does induce cancer?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 75 Cancer is induced by Oncogene. An oncogene is a gene that has the potential to cause cancer. In tumor cells, they are often mutated and/or expressed at high levels. Most normal cells will undergo a programmed form of rapid cell death (apoptosis) when critical functions are altered and malfunctioning.
RRB JE ECE (CBT I) Mock Test- 9 - Question 76

The following component of a fluorescent lamp contributes maximum in making them costly is______?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 76 In a fluorescent lighting system, the ballast regulates the current to the lamps and provides sufficient voltage to start the lamps. Without a ballast to limit its current, a fluorescent lamp connected directly to a high voltage power source would rapidly and uncontrollably increase its current draw.
RRB JE ECE (CBT I) Mock Test- 9 - Question 77

What is a Carbamide?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 77 Ceramide is another name of Urea, an organic compound with the chemical formula CO(NH2)2. This name indicates that Urea is an amide in which two – NH2 groups are joined by a carbonyl (C=O) functional group.
RRB JE ECE (CBT I) Mock Test- 9 - Question 78

Na+ The number of electrons in is-

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 78 The sodium atom has 11 protons, 11 electrons, and 12 neutrons. On the other hand Na+ has 11 protons, 10 electrons and 12 neutrons. An Na+ ion is a sodium atom that has lost one electron as that makes the number of electrons in the atom equal to that of the nearest Noble gas Neon which has 10 electrons.
RRB JE ECE (CBT I) Mock Test- 9 - Question 79

The particular element that is used in preparing windows for X-Ray Tubes is_________?

RRB JE ECE (CBT I) Mock Test- 9 - Question 80

Which among the following is the first phase in the sexual reproduction of organisms?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 80 Gametogenesis is the process by which diploid precursor cells undergo meiotic division to become haploid gametes (sex cells) In males, this process is called spermatogenesis and produce spermatozoa (sperm) In females, this process is called oogenesis and produce ova (eggs).
RRB JE ECE (CBT I) Mock Test- 9 - Question 81

The blood circulation inside the body takes approximately _________ seconds.

RRB JE ECE (CBT I) Mock Test- 9 - Question 82

The plants that have respiratory roots are called_________

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 82 Mangroves are plants that have Respiratory Roots. A mangrove is a shrub or small tree that grows in coastal saline or brackish water. The term is also used for tropical coastal vegetation consisting of such species. Mangroves occur worldwide in the tropics and subtropics, mainly between latitudes 25° N and 25° S.
RRB JE ECE (CBT I) Mock Test- 9 - Question 83

A sound wave travels from east to west, in which direction do the particles of air move?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 83 To be more precise, the particles of a sound wave oscillate in a direction parallel and antiparallel to the propagation of the wave. So if a sound wave travels from east to west, its particles will vibrate in both east to west directions.
RRB JE ECE (CBT I) Mock Test- 9 - Question 84

An electric fuse wire melts if the amount of current flowing through it is-

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 84 An electric fuse consists of a piece of wire made of a metal or an alloy of appropriate melting point. (Like aluminum, copper, iron, lead, etc.) If a current larger than the specified value flows through the circuit, the temperature of the fuse wire increases. This melts the fuse wire and breaks the circuit.
RRB JE ECE (CBT I) Mock Test- 9 - Question 85

Which among the following sources are considered to be naturally rich in Iodine-

1. Table Salt

2. Sea-food

3. Dairy Products

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 85 Seafood is naturally rich in iodine. Cod, sea bass, haddock, and perch are good sources. Dairy foods—cow's milk and yogurt—as well as eggs rank as very good sources of iodine
RRB JE ECE (CBT I) Mock Test- 9 - Question 86

The circuit element is used to block DC in an electronic circuit?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 86 Capacitance is the ability of a body to store an electric charge. There are two closely related notions of capacitance: self capacitance and mutual capacitance. Any object that can be electrically charged exhibits self-capacitance.
RRB JE ECE (CBT I) Mock Test- 9 - Question 87

An element which changes the rate of a chemical reaction but does not undergo any change in itself, is called-

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 87 A catalyst is a substance that increases the rate of a a chemical reaction without undergoing any change itself.
RRB JE ECE (CBT I) Mock Test- 9 - Question 88

An anti-knocking compound that has been phased out in many countries so far is__________?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 88 Tetra Ethyl Lead (TEL) is one such component that is added to petrol to reduce its tendency to ‘ping’ under compression. TEL breaks down to lead at upper cylinder temperatures. Lead atoms spread around and combine with the free radicals and slow down the reaction. However, `Leaded’ petrol was a grave danger to the environment, as lead is a poison when it is absorbed into the body.
RRB JE ECE (CBT I) Mock Test- 9 - Question 89

Only two elements are in liquid state at room temperature. They are:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 89 Mercury and bromine are both elements which are liquid at room temperature. Gallium and cesium have melting points slightly above room temperature, and would melt in your hand from body heat.
RRB JE ECE (CBT I) Mock Test- 9 - Question 90

Which one of the following statements is correct about Sound Waves?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 90 Sound can propagate through a medium such as air, water and solids as longitudinal waves and also as a transverse wave in solids. The sound waves are generated by a sound source, such as the vibrating diaphragm of a stereo speaker.
RRB JE ECE (CBT I) Mock Test- 9 - Question 91

The study of living organisms and their surrounding environment in the outer space is known as__________?

RRB JE ECE (CBT I) Mock Test- 9 - Question 92

Consider the following, in the case that a tourist plans to visit a hill station located at very high altitude also wishes to take along his Television Set-

1. Plasma TV

2. Cathode Ray Tube TV

3. LCD TV

Which are expected to work properly at very high altitudes?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 92 Plasma TV is a television display technology in which each pixel on the screen is illuminated by a tiny bit of plasma (it can change its behaviour at high altitude). The cathode ray tube (CRT) is a vacuum tube that contains one or more electron guns .The first commercially made electronic television sets with cathode ray tubes were manufactured by Telefunken in Germany in 1934.
RRB JE ECE (CBT I) Mock Test- 9 - Question 93

The deficiency of Vitamin C causes _____________

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 93 Scurvy (Bleeding of gums) is a disease resulting from a lack of vitamin C. Early symptoms include weakness, feeling tired and sore arms and legs. Without treatment, decreased red blood cells, gum disease, changes to hair, and bleeding from the skin may occur.
RRB JE ECE (CBT I) Mock Test- 9 - Question 94

What is the name of the reproductive part of the plant?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 94 The flower is the reproductive unit of some plants. Parts of the flower include petals, sepals, one or more carpels (the female reproductive organs), and stamens (the male reproductive organs). The Female Reproductive Organs: the pistil is the collective term for the carpel(s).
RRB JE ECE (CBT I) Mock Test- 9 - Question 95

Bacteria was observed for the first time by____________?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 95 Van Leeuwenhoek discovered "protozoa" - the single-celled organisms and he called them "animalcules". He also improved the microscope and laid the foundation for microbiology. He is often cited as the first microbiologist to study muscle fibers, bacteria, spermatozoa and blood flow in capillaries.
RRB JE ECE (CBT I) Mock Test- 9 - Question 96

Rectifiers are used to convert:

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 96 A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction.
RRB JE ECE (CBT I) Mock Test- 9 - Question 97

AIDS causing HIV principally infects_____________?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 97 T4 lymphocytes, also known as "Helper cells", are a type of white blood cell that orchestrate the immune response and enhance the activities of the killer T-cells (those that destroy pathogens) and B-cells (antibody and immunoglobulin producers).
RRB JE ECE (CBT I) Mock Test- 9 - Question 98

Which of the following is also called the spirit of salt?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 98 HCL is a strong acid which reacts with most of the bases to give salt and water.
RRB JE ECE (CBT I) Mock Test- 9 - Question 99

Which process is used in order to make ghee ?

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 99 Hydrogenation is the process of adding hydrogen to an edible vegetable oil using a catalyst to produce fat with semi solid.
RRB JE ECE (CBT I) Mock Test- 9 - Question 100

For the reversibility of a cycle, there should be

Detailed Solution for RRB JE ECE (CBT I) Mock Test- 9 - Question 100 For the reversibility of a cycle, there should be no loss of energy

## RRB JE Mock Test Series for ECE

10 tests
 Use Code STAYHOME200 and get INR 200 additional OFF Use Coupon Code
Information about RRB JE ECE (CBT I) Mock Test- 9 Page
In this test you can find the Exam questions for RRB JE ECE (CBT I) Mock Test- 9 solved & explained in the simplest way possible. Besides giving Questions and answers for RRB JE ECE (CBT I) Mock Test- 9, EduRev gives you an ample number of Online tests for practice

10 tests