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RRB NTPC Mock Test - 12 (English) - RRB NTPC/ASM/CA/TA MCQ


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30 Questions MCQ Test RRB NTPC Mock Test Series 2025 - RRB NTPC Mock Test - 12 (English)

RRB NTPC Mock Test - 12 (English) for RRB NTPC/ASM/CA/TA 2024 is part of RRB NTPC Mock Test Series 2025 preparation. The RRB NTPC Mock Test - 12 (English) questions and answers have been prepared according to the RRB NTPC/ASM/CA/TA exam syllabus.The RRB NTPC Mock Test - 12 (English) MCQs are made for RRB NTPC/ASM/CA/TA 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for RRB NTPC Mock Test - 12 (English) below.
Solutions of RRB NTPC Mock Test - 12 (English) questions in English are available as part of our RRB NTPC Mock Test Series 2025 for RRB NTPC/ASM/CA/TA & RRB NTPC Mock Test - 12 (English) solutions in Hindi for RRB NTPC Mock Test Series 2025 course. Download more important topics, notes, lectures and mock test series for RRB NTPC/ASM/CA/TA Exam by signing up for free. Attempt RRB NTPC Mock Test - 12 (English) | 100 questions in 90 minutes | Mock test for RRB NTPC/ASM/CA/TA preparation | Free important questions MCQ to study RRB NTPC Mock Test Series 2025 for RRB NTPC/ASM/CA/TA Exam | Download free PDF with solutions
RRB NTPC Mock Test - 12 (English) - Question 1

A photocell converts light energy into ________.

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 1
  • A photocell converts light energy into electrical energy. There are mainly three kinds of photocells, which are photovoltaic, photoconductive, and photo emissive.
  • The Photoelectric effect was explained by Albert Einstein.
RRB NTPC Mock Test - 12 (English) - Question 2

How many articles were there originally in the Constitution of India?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 2
  • There were 395 articles originally in the Constitution of India.
  • Presently 448 articles are there in Constitution.
  • Indian Constitution was originally written in English.
  • Prem Behari Narain Raizada wrote the Indian constitution by hand.
  • Dr. BR Ambedkar is known as the father of the Indian Constitution.
  • Indian Constitution was adopted by the Constituent Assembly of India on 26 November 1949 and became effective on 26 January 1950.
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RRB NTPC Mock Test - 12 (English) - Question 3

There are six persons Saurav, Harshita, Jay, Ashwini, Jagannath and Sakshi, who got different marks in the examination. Ashwini got more marks than all of them. Jay got more marks than two of them. Jagannath got less marks than only Ashwini. Saurav got less marks than 5 persons. Harshita got more marks than Jay while Sakshi got less marks than Jay. How many persons scored more marks than Sakshi?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 3

1) Ashwini got more marks than all of them. Jay got more marks than two of them.

Ashwini > ……. > ……. > Jay > …… > …….

2) Jagannath got less marks than only Ashwini.

Ashwini > Jagannath > ……. > Jay > …… > …….

3) Saurav got less marks than 5 persons.

(Therefore Saurav got the least marks)

Ashwini > Jagannath > ……. > Jay > …… > Saurav

4) Harshita got more marks than Jay while Sakshi got less marks than Jay.

Ashwini > Jagannath > Harshita > Jay > Sakshi > Saurav

Hence, four people scored more than Sakshi.

RRB NTPC Mock Test - 12 (English) - Question 4

ISRO’s Mars Orbiter Mission was launched using which of the following launch vehicle?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 4
  • The Mars Orbiter Mission was launched from the Satish Dhawan Space Centre Andhra Pradesh, using a Polar Satellite Launch Vehicle (PSLV) C25 XL on 5 November 2013.
  • It is one of the world's most reliable launch vehicles.
  • The XL variant was earlier used to launch Chandrayaan (2008), GSAT-12 (2011) and RISAT-1 (2012).
  • MOM is India's first venture into the interplanetary space.
  • It will explore and observe Mars surface features, morphology, mineralogy and the Martian atmosphere.
RRB NTPC Mock Test - 12 (English) - Question 5

The third proportional to (x2 – y2) and (x – y) is:

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 5

Let the third proportion be a

(x2 – y2) : (x – y) :: (x – y) : a

a = (x – y)2 /(x2 – y2)= (x – y)/(x + y)

RRB NTPC Mock Test - 12 (English) - Question 6

In ΔABC, measure of ∠C is 90°. If sin B = 24/25 and BC = 3.5 cm, then what is the length (in cm) of side AB?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 6


If sin B = 24/25

sin B = Perpendicular/Hypotenuse = AC/AB = 24/25

Taking AC = 24 * x ,  AB = 25 * x and BC=3.5 cm

By the Pythagoras theorem, x = 0.5

⇒ AC =24 * x =12 cm

=>AB = 25 * x = 12.5 cm

∴ The length of AB is 12.5 cm

RRB NTPC Mock Test - 12 (English) - Question 7

Dry ice is the solid form of which of the following?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 7

Dry ice is the solid form of Carbon Dioxide. It has lower temperature than the water ice and is used as a cooling agent. 

RRB NTPC Mock Test - 12 (English) - Question 8

The World Kidney Day 2019 was observed on which of the following days?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 8
  • The World Kidney Day 2019 was observed on March 14, 2019.
  • This Day is observed annually on the second Thursday of March.
  •  It aims to raise awareness about the importance of our kidneys.
  • Theme: ‘Kidney Health for Everyone Everywhere’.
RRB NTPC Mock Test - 12 (English) - Question 9

P, Q and R undertook a work for Rs. 48000. Together P and Q complete 5/12th part of the work. What is the share (in Rs.) of R?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 9

Together P and Q complete 5/12th part of the work

∴ Part of work completed by R

= 1 - (5/12)

= 7/12

The total amount for the work = Rs. 48000

∴ Share of R = (7/12) × 48000

= 7 × 4000

= 28000

RRB NTPC Mock Test - 12 (English) - Question 10

How many triangles are there in the given figure?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 10


Thus there are 6 triangles in the given figure.

RRB NTPC Mock Test - 12 (English) - Question 11

What is the ratio of length and breadth of the Indian national flag?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 11
  • The ratio of length and breadth of the Indian national flag is 3 : 2.
  • It is a horizontal tricolor of deep saffron (Kesari) at the top, white in the middle and dark green at the bottom in equal proportion.
  • It became the official flag of the Dominion of India on 15 August 1947.
  • Pingali Venkayya is considered as the designer of the Indian National Flag.
RRB NTPC Mock Test - 12 (English) - Question 12

According to the Union Budget 2019, individuals having an income of up to _______ won’t pay any tax.

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 12
  • Present Finance Minister - Arun Jaitley
  • The Finance Minister during the budget presentation was Piyush Goyal. He proposed that individuals having an income of up to rupees five (5) lakh will have not have to pay any tax.
  • Even persons having a gross income up to rupees 6.5 lakh may not be required to pay any income tax if they make investments in Provident Funds and specified savings and insurance.
RRB NTPC Mock Test - 12 (English) - Question 13

Gokak Falls is located on which of the following river?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 13
  • The Gokak Falls is located in Belagavi, Karnataka on the Ghataprabha River.
  • Gokak gets its name due to the Goki trees found in abundance in these areas.
  • Its shape, color, height and speed helped it earn the tag of 'mini Niagara’.
RRB NTPC Mock Test - 12 (English) - Question 14

Which of the following numbers is the largest?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 14

Solving the given options:

(6 + 6 + 6)2 = 18 = 324

{(6 + 6)2}2 =  (122)2 = 20736

(6 × 6 × 6)2 = (216)2 = 46656

6 + 62 + (6)3 = 6 + 36 + 216 = 258

∴ On comparing all the options, (6 × 6 × 6)2 is the largest number.

RRB NTPC Mock Test - 12 (English) - Question 15

Which among the following is the biggest local urban government?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 15
  • Municipal Corporation is the biggest local urban government.
  • Municipal Council is for the smaller urban area.
  • Nagar Panchayat is for areas in transition from rural to urban.
RRB NTPC Mock Test - 12 (English) - Question 16

The average of 6 numbers is 18. If one number is excluded, the average becomes 17. What is the excluded number?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 16

Average = (sum of elements)/number of elements

Given,

The average of 6 numbers is 18.

Sum of 6 numbers = 18 × 6 = 108

Given,

If one number is excluded, the average becomes 17.

Average of 5 numbers = 17

Sum of 5 numbers = 17 × 5 = 85

Excluded number =

= sum of 6 numbers - sum of 5 numbers

= 108 - 85

= 23

∴ The excluded number is 23.

RRB NTPC Mock Test - 12 (English) - Question 17

Wind streams show an ________ diversion in Northern hemisphere due to Coriolis force.

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 17
  • Due to the Earth's rotation wind movements across the Earth's surface are diverted to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
  • The rotation of the earth about its axis affects the direction of the wind. This force is called the Coriolis force.
  • It not only affects wind movement but it influences all of the movements across the Earth's surface.
  • This direction is determined by Farrell’s Law.
RRB NTPC Mock Test - 12 (English) - Question 18

As per the interim budget of 2019, a separate department for which of the following will be created?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 18
  • As per the interim budget of 2019, a separate department of Fisheries will be created.
  • Additionally, 2 percent interest subvention to farmers pursuing animal husbandry and fisheries will also be given.
  • NOTE: A separate department for fisheries and a separate commission for cows will be created.
RRB NTPC Mock Test - 12 (English) - Question 19

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

i. Faculty
ii. Faith
iii. Faint
iv. Familiar

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 19

On arranging given word as per dictionary order,

i. Faculty
iii. Faint
ii. Faith
iv. Familiar

Hence, “I, iii, ii, iv” is correct order as per dictionary.

RRB NTPC Mock Test - 12 (English) - Question 20

In the following question, select the number which can be placed at the sign of question mark (?) from the given alternatives.

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 20

Let the elements of matrix be A11, A12, A21, and A22 as shown

Then,

(A11 + A12 + A21) - 2 = A22

In Matrix 1 → 4 + 7 + 3 - 2 = 14 - 2 = 12.

In Matrix 2 → 3 + 7 + 5 - 2 = 15 - 2 = 13.

Similarly,

In Matrix 3 → 6 + ? + 8 - 2 = 17 → ? = 17 - 12 = 5.

Hence, 5 is the correct answer.

RRB NTPC Mock Test - 12 (English) - Question 21

Which of the following is most reactive in nature?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 21
  • An atom's reactivity is determined by the number of electrons in its outermost shell.
  • Less valence electron means high reactivity.

Valence electron in elements

RRB NTPC Mock Test - 12 (English) - Question 22

The junction between two nerve cells is known as?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 22
  • The junction between two nerve cells is known as the Synapse.
  • The information is passed between two nerve cells through synapse in the form of chemical or electrical signals.
  • At a synapse, the plasma membrane of the signal-passing neuron comes into the close with the membrane of the target cell.
  • A synaptic connection between a neuron and a muscle cell is known as a neuromuscular junction.
RRB NTPC Mock Test - 12 (English) - Question 23

What is the dimensional formula of magnetic flux?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 23

 

We know,
ϕ = B Δ S cosθ
Here, cosθ is dimensionless
ΔS is the surface area of the surface placed in the magnetic field = [L2]
Bis the magnetic field = 
So, Dimensional formula of flux = 

RRB NTPC Mock Test - 12 (English) - Question 24

wo lines 2x – 3y = 6 and ax – 9y = 1 are parallel to each other. Find the value of a.

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 24

Given line 2x – 3y = 6

We can write y = 2x/3 – 2

∵ Slope of line y = mx + c is equal to m,

⇒ Slope of line = 2/3

Considering other line ax – 9y = 1

We can write, y = a/9 – 1/9

⇒ Slope of line = a/9

∵ Slope of parallel lines is equal

⇒ a/9 = 2/3

⇒ a = 9 × 2/3

∴ a = 6

RRB NTPC Mock Test - 12 (English) - Question 25

Which among the following is the result of the excess of Phosphorus?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 25
  • Kidney Failure is a result of the excess of Phosphorus.
  • It is important for the structure of DNA, a transporter of energy (ATP), a component of the cellular membrane, helps strengthen bones.
  • Deficiency of Phosphorus can cause hypophosphatemia.
RRB NTPC Mock Test - 12 (English) - Question 26

Correct the following equation by interchanging the two signs and two numbers (taking one set of the first elements from the left)
52 × 4 ÷ 2 + 6 × 10 ÷ 3 = 31

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 26

Given equation is 52 × 4 ÷ 2 + 6 × 10 ÷ 3 = 31

Let’s check each of the option,

1. Interchanging 4, 2 and ×, ÷

Equation will become, 52 ÷ 2 × 4 + 6 × 10 ÷ 3 = 124 ≠ 31

2. Interchanging 2, 6 and ÷, +

Equation will become, 52 × 4 + 6 ÷ 2 × 10 ÷ 3 = 218 ≠ 31

3. Interchanging 6, 3 and ×, +

Equation will become, 52 + 4 ÷ 2 + 3 × 10 ÷ 6 = 59 ≠ 31

4. Interchanging 10, 6 and ×, ÷

Equation will become, 52 ÷ 4 × 2 + 10 ÷ 6 × 3 = 31

Hence, by interchanging 10, 6 and ×, ÷ we get correct answer.

RRB NTPC Mock Test - 12 (English) - Question 27

Primary education is most essential and forms the base of an individual. Education is very important to lead a good life.
Which of the following is a statement that can be inferred from the facts stated in the above statement?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 27

Here the fact-Education is important to lead a good life

Assumption-If primary education is not properly attained, base of an individual may not be strongly built.

From both the statements we can infer that education is the soul of one’s life. This is exactly what is told in option 4. Rest all options are also valid but cannot be logically inferred from the given statements.

RRB NTPC Mock Test - 12 (English) - Question 28

Average age of 6 boys is 14 years. Average age of 11 girls is 12 years. What is the average age (in years) of all boys and girls?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 28

Average of 6 boys = Sum of age of 6 boys/6

⇒ 14 = sum of ages of 6 boys/6

⇒ Sum of age of 6 boys = 84

Now,

Average of 11 girls = sum of age of 11 girls/11

⇒ 12 = sum of age of 11 girls/11

⇒ Sum of age of 11 girls = 132

Now,

Sum of age of all girls and boys together = 84 + 132 = 216

∴ Average = 216/17 = 12.7

RRB NTPC Mock Test - 12 (English) - Question 29

Which among the following disease is caused due to deficiency of vitamin D?

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 29
  • Osteomalacia is a disease caused due to the deficiency of Vitamin D.
  • Arthritis is a disease caused due to the deficiency of Synovial Fluid.
  • Gout is a disease caused due to the accumulation of Uric Acid.
  • Pellagra is a disease caused due to deficiency of Vitamin B3
RRB NTPC Mock Test - 12 (English) - Question 30

If is equal to:

Detailed Solution for RRB NTPC Mock Test - 12 (English) - Question 30

Given,

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