RRB Group D 2025 Question Paper (5-Aug-2026) (Shift 2)

Question 1

Machine M does 600 J of work in 20 s. Machine N does 900 J of work in 15 s. Which statement is correct?

Accepted Answer

Machine N develops twice the power of Machine M.

Answer

Both machines develop the same power.

Answer

Machine M develops greater power.

Answer

Machine N develops 1.5 times the power of Machine M.

Question 2

A science museum is designing a demonstration to explain why the sky appears blue during the day but takes on reddish hues during sunrise and sunset. Which explanation best accounts for these observations based on the scattering of light in the atmosphere?

Accepted Answer

Shorter wavelengths scatter more strongly, while longer atmospheric paths at sunset favour red wavelengths.

Answer

Atmospheric absorption removes red light during the day, while removing blue light at sunset.

Answer

The Sun emits more blue light during the day, while emitting more red light at sunset.

Answer

Dust particles scatter all wavelengths equally, while increased dust at sunset makes red light more visible.

Question 3

In a grassland food chain, the maximum accumulation of a chemical pesticide would be found in:

Accepted Answer

Hawk

Answer

Frog

Answer

Grasshopper

Answer

Grass

Question 4

Dead structures are often “hard and rigid.” Which simple permanent tissue is mainly made of dead cells that provide mechanical strength to plants?

Accepted Answer

Sclerenchyma

Answer

Meristematic tissue

Answer

Epidermis

Answer

Parenchyma

Question 5

A machine completes a task requiring 3000 J of work in half a minute. The average power delivered by the machine is ____.

Accepted Answer

100 W

Answer

30 W

Answer

300 W

Answer

10 W

RRB Group D 2025 Question Paper (5-Aug-2026) (Shift 2)

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