RRB Group D - General Science PYQ Quiz 205
10 PYQ questions from RRB Group D - General Science
About This Quiz
This is one set from a larger bank. See all RRB Group D General Science previous year questions.
RRB Group D - General Science PYQ Quiz 205 — Questions with Solutions
All 10 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.
Q1.Which of the following is a chemical change?
- A.Cutting of paper
- B.Dissolving salt in water
- C.Melting of ice
- D.Rusting of iron
Show answer
Answer: D. Rusting of iron
Q2.In which of the following metals will the rate of formation of bubbles be fastest when it reacts with dil. HCl?
- A.Fe
- B.Al
- C.Zn
- D.Mg
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Answer: D. Mg
Q3.The gravitational constant (G) was first measured by .
- A.Newton
- B.Cavendish
- C.Galileo
- D.Kepler
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Answer: B. Cavendish
Q4.What is the term used for the refractive index of a medium when medium 1 is specified as vacuum or air?
- A.Relative refractive index
- B.Absolute refractive index
- C.Comparative refractive index
- D.Optical density
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Answer: B. Absolute refractive index
Q5.A gardener wants to grow stronger plants with better fruit. Which pollination method should they encourage?
- A.Test Pollination
- B.Cross-pollination
- C.Self-pollination
- D.Geitonogamy
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Answer: B. Cross-pollination
Q6.Which of the following is a correct match of tissue type and its example?
- A.Muscular tissue – Neurons
- B.Connective tissue – Blood
- C.Epithelial tissue – Blood
- D.Nervous tissue – Muscles
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Answer: B. Connective tissue – Blood
Q7.Galvanisation is a method of protecting steel and iron from rusting by coating them with a thin layer of:
- A.magnesium
- B.zinc
- C.copper
- D.aluminium Section : Mathematics
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Answer: B. zinc
Q8.When a raised hammer falls on a nail and drives it into wood, the work done by the force of the hammer on the nail is positive. In this same scenario, which statement would describe negative work?
- A.The work done by the force of gravity acting on the nail as it moves into the wood.
- B.The work done by the force exerted by the nail on the hammer.
- C.The work done by the potential energy stored in the hammer.
- D.The work done by the force of gravity acting on the hammer as it falls.
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Answer: B. The work done by the force exerted by the nail on the hammer.
Q9.Which device relies on the heating effect of current to protect circuits and appliances by intentionally melting to break the circuit when the current exceeds a specified limit?
- A.Electric iron coil
- B.Electric bulb filament
- C.Rheostat
- D.Electric fuse
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Answer: D. Electric fuse
Q10.Spring balance A is attached at one end to spring balance B, whose other end is fixed to a rigid support. A force is applied to the free end of spring balance A. Both balances show the same reading. What does this observation indicate?
- A.Both balances exert forces in the same direction.
- B.The force exerted by A on B is equal and opposite to the force exerted by B on A.
- C.Only spring balance A exerts force on B.
- D.The force exerted by A on B is greater than that by B on A.
Show answer
Answer: B. The force exerted by A on B is equal and opposite to the force exerted by B on A.
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