This is Set 1 of the RRB Group D 2025 Exam held on 27 November 2025 (Shift 1). It includes Questions 1 to 25 in MCQ format with correct answers and explanations. Practice these real exam-level questions to strengthen your CBT 1 preparation. This set contains questions from General Science
RRB Group D 2025 Question Paper – 27 November Shift 1 | Set 1 (Q1–Q25) General Science
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Total: 25 Questions
Questions
Q1.
Which of the following statements is correct?
📘 Explanation:
Work = F·s cosθ. Depending on direction of force, work can be positive or negative.
Q2.
Through which method of cell division are the diploid chromosomes divided into haploid gametes?
📘 Explanation:
Meiosis reduces chromosome number from diploid (2n) to haploid (n).
Q3.
The power of a lens is defined as:
📘 Explanation:
Power (P) = 1/f (in meters). Unit is dioptre.
Q4.
When a thick glass slab is placed over printed matter, the letters appear raised. This is due to ___________.
📘 Explanation:
Refraction causes apparent shift making letters appear raised.
Q5.
The motion of a satellite orbiting the Earth in a circular path at constant speed is a classic example of uniform circular motion. What property of this motion prevents its acceleration from being zero?
📘 Explanation:
Acceleration exists because velocity direction changes continuously (centripetal acceleration).
Q6.
Asthma primarily affects which part of the respiratory system?
📘 Explanation:
Asthma causes inflammation and narrowing of bronchi and bronchioles.
Q7.
Which of the following describes an example of uniform circular motion?
📘 Explanation:
Uniform circular motion requires constant speed in circular path.
Q8.
During reproduction, why is it important to create DNA copies?
📘 Explanation:
DNA copying ensures transmission of hereditary traits.
Q9.
What happens when a naphthalene ball is burnt in a metal plate in open space?
Q10.
When water and nutrients are available, algae grow and multiply rapidly by the process of _________.
📘 Explanation:
Algae commonly reproduce by fragmentation.
Q11.
A coil has a resistance of 44 Ω. If it is connected across a 220 V supply, what is the power consumed by the coil?
📘 Explanation:
P = V²/R = 220²/44 = 1100 W.
Q12.
Which of the following options best describes the term Culture Fishery?
Q13.
A body is dropped from a height. If it falls for 3.0 s and g = 10 m/s², its final velocity (v) is ______________.
📘 Explanation:
v = gt = 10 × 3 = 30 m/s.
Q14.
What happens when a zinc rod is placed in aqueous copper sulphate solution?
📘 Explanation:
Zinc displaces copper, reducing blue CuSO4 solution.
Q15.
The fractional atomic mass of chlorine is due to which of the following?
📘 Explanation:
Chlorine exists as isotopes Cl-35 and Cl-37.
Q16.
The functional group which does NOT contain oxygen hetero atom is:
Q17.
What is the main role of micelles in the cleansing action of soap?
📘 Explanation:
Micelles trap oily dirt in hydrophobic core.
Q18.
Which poultry are birds farmed to produce eggs?
Q19.
Statement 1: The potential difference is measured in volts. Statement 2: One volt is equal to one newton per coulomb. Which of the following is true?
📘 Explanation:
1 volt = 1 joule/coulomb, not newton/coulomb.
Q20.
The frequency of a sound wave is 50 Hz. How much time will it take to complete one wave?
📘 Explanation:
Time period T = 1/f = 1/50 = 0.02 s.
Q21.
Which of the following statements best explains the Law of Constant Proportions?
Q22.
Which of the following is NOT used for expressing the concentration of a solution?
Q23.
Which of the following plant tissue performs photosynthesis?
Q24.
Which of the following life processes is important to bring variation in species?
Q25.
Which of the following metals is extracted in the middle of the activity series?
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