RRB Group D 2025 Question Paper (9-Aug-2026) (Shift 2)

Question 1

Read the following two statements carefully and choose the correct option: Statement I: Ethanol on oxidation with alkaline potassium permanganate gives ethanoic acid. Statement II: Oxidation of ethanol involves the removal of hydrogen atoms and addition of oxygen. Which of the following is correct?

Accepted Answer

Both statements are correct, and Statement II explains Statement I.

Answer

Both statements are correct, but Statement II does not explain Statement I.

Answer

Only statement I is correct.

Answer

Only statement II is correct.

Question 2

Consider the following statements about simple machines. 1. Help lift heavy loads. 2. Can increase the distance through which effort acts. 3. May change the direction of force. 4. Violate the law of conservation of energy. Which of the above statements are correct?

Accepted Answer

1, 2 and 3 only

Answer

1 and 4 only

Answer

1, 2, 3 and 4

Answer

2 and 3 only

Question 3

A packet of potato chips is filled with nitrogen gas before sealing. What is the main reason for using nitrogen in the packet?

Accepted Answer

Nitrogen prevents oxidation of oils and fats

Answer

Nitrogen reacts with oil to stabilize it

Answer

Nitrogen removes moisture from chips

Answer

Nitrogen increases the crispness of chips

Question 4

Which of the following statements correctly explains why saturated hydrocarbons burn with a blue flame, while unsaturated hydrocarbons tend to burn with a yellow, sooty flame?

Accepted Answer

Unsaturated hydrocarbons have a higher carbon-to-hydrogen ratio, leading to incomplete combustion and soot formation.

Answer

Saturated hydrocarbons react with nitrogen in the air to prevent soot formation.

Answer

Unsaturated hydrocarbons contain more oxygen, which leads to incomplete combustion.

Answer

Saturated hydrocarbons have weaker bonds, so they burn more completely.

Question 5

A heater is rated at 220 V and 1000 W. If it is connected to a 110 V supply, what will be the power consumed by the heater?

Accepted Answer

250 W

Answer

500 W

Answer

1000 W

Answer

200 W

RRB Group D 2025 Question Paper (9-Aug-2026) (Shift 2)

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