UPSC Special Class Railway Apprentice (SCRA) MCQs

UPSC Special Class Railway Apprentice (SCRA) MCQs: These MCQs focus on key subjects such as General Knowledge, Mathematics, Physics, and Engineering Aptitude, designed to reflect the actual exam pattern. Practicing with these questions will help aspirants enhance their understanding, improve problem-solving skills, and boost time management. Whether you’re revising core concepts or assessing your exam readiness, these SCRA MCQs are an essential resource to help you succeed in the UPSC SCRA exam and embark on a career in the Indian Railways.

Q1. Which gas is commonly known as laughing gas?

Correct Answer: B

The gas Nitrous Oxide (N2O) is commonly known as laughing gas.

Q2. What is the derivative of sin(x)?

Correct Answer: A

The derivative of sin(x) with respect to x is cos(x).

Q3. Who was the first President of India?

Correct Answer: A

Dr. Rajendra Prasad was the first President of India.

Q4. What is the chemical formula of water?

Correct Answer: B

Water is chemically represented by H2O.

Q5. The sum of angles in a triangle is?

Correct Answer: B

The sum of internal angles in a triangle is always 180 degrees.

Q6. Which part of the brain controls balance and coordination?

Correct Answer: B

The cerebellum is responsible for balance and coordination.

Q7. What is the value of zero factorial (0!)?

Correct Answer: B

Zero factorial is defined as 1.

Q8. Which element has the atomic number 8?

Correct Answer: A

Oxygen has atomic number 8.

Q9. The Mughal ruler Shah Jahan is famous for building which monument?

Correct Answer: A

Shah Jahan built the Taj Mahal.

Q10. What is the integral of 1/x dx?

Correct Answer: A

The integral of 1/x dx is ln|x| + C.

Q11. Who wrote the Indian national anthem?

Correct Answer: A

Rabindranath Tagore wrote the Indian national anthem.

Q12. What is the SI unit of force?

Correct Answer: A

Newton is the SI unit of force.

Q13. Solve for x: 2x + 3 = 7.

Correct Answer: B

Solving 2x + 3 = 7 gives x = 2.

Q14. In which year did India gain independence?

Correct Answer: A

India gained independence in 1947.

Q15. What is the acceleration due to gravity (approx.) on Earth?

Correct Answer: A

Acceleration due to gravity on Earth is approximately 9.8 meters per second squared.

Q16. What is 2 raised to the power 5?

Correct Answer: B

2 raised to the power 5 equals 32.

Q17. Which vitamin is produced when the skin is exposed to sunlight?

Correct Answer: D

Vitamin D is synthesized in the skin through sunlight exposure.

Q18. What is the chemical symbol for gold?

Correct Answer: A

Au is the chemical symbol for gold.

Q19. The Earth revolves around the Sun in approximately how many days?

Correct Answer: A

Earth completes one revolution around the Sun in about 365 days.

Q20. Which organ is responsible for pumping blood in the human body?

Correct Answer: B

The heart pumps blood throughout the body.

Q21. What is the square root of 144?

Correct Answer: B

Square root of 144 is 12.

Q22. Which of the following is a noble gas?

Correct Answer: C

Argon is a noble gas.

Q23. In which year was the Constitution of India adopted?

Correct Answer: B

The Constitution of India was adopted in 1949.

Q24. What is the next prime number after 7?

Correct Answer: B

11 is the next prime number after 7.

Q25. Which law explains the relationship between voltage, current, and resistance?

Correct Answer: A

Ohm’s Law states V = IR, relating voltage, current, and resistance.

Q26. What is the capital of Arunachal Pradesh?

Correct Answer: A

Itanagar is the capital of Arunachal Pradesh.

Q27. Which of the following is a non-renewable energy source?

Correct Answer: C

Coal is a fossil fuel and a non-renewable energy source.

Q28. What is the formula for calculating the area of a circle?

Correct Answer: A

The area of a circle is Ο€ times the square of its radius.

Q29. Which planet is known as the Red Planet?

Correct Answer: A

Mars is called the Red Planet.

Q30. Who invented the telephone?

Correct Answer: A

Alexander Graham Bell is credited with inventing the telephone.

Q31. What is the unit of electric current?

Correct Answer: A

Ampere is the unit of electric current.

Q32. Which organelle is known as the powerhouse of the cell?

Correct Answer: B

Mitochondria produce energy for the cell.

Q33. What is the value of pi (Ο€) approximately?

Correct Answer: B

Pi (Ο€) is approximately equal to 3.14.

Q34. How many bones are there in the adult human body?

Correct Answer: A

There are 206 bones in the adult human body.

Q35. Which phenomenon causes a rainbow?

Correct Answer: C

Rainbows are formed due to refraction and dispersion of light.

Q36. What is the boiling point of water at sea level?

Correct Answer: C

Water boils at 100Β°C at sea level.

Q37. What type of number is 0?

Correct Answer: B

0 is considered a whole number.

Q38. Which Indian state has the largest area?

Correct Answer: A

Rajasthan is the largest state by area in India.

Q39. Which gas do plants absorb for photosynthesis?

Correct Answer: A

Plants absorb carbon dioxide for photosynthesis.

Q40. What is the Capital of India?

Correct Answer: B

Delhi is the capital city of India.

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