RRB Group D 2025 Question Paper (19-Aug-2026) (Shift 3)

Question 1

In an experiment, a group of plants fail to reproduce when water is withheld, even though they have vascular tissues. Which plant group do they most closely resemble?

Accepted Answer

Pteridophyta

Answer

Angiosperm

Answer

Gymnosperm

Answer

Bryophyta

Question 2

An element X forms a chloride with the formula XCl3 and an oxide with the formula X2O3. Based on this, what is the valency of element X?

Accepted Answer

3

Answer

4

Answer

2

Answer

1

Question 3

A worker has to raise a heavy load to a certain height. Four ideal machines are available. Their mechanical advantages are given below: Machine P: MA = 0.5 Machine Q: MA = 0.8 Machine R: MA = 2 Machine S: MA = 4 Assume all machines are frictionless and the load must be lifted through the same vertical height. Which of the following statements is correct?

Accepted Answer

Machine S requires the least effort but the effort moves through the greatest distance.

Answer

Machines R and S require the same effort since the load is unchanged.

Answer

Machine P requires the least effort because it has the smallest MA.

Answer

All four machines require the same effort because ideal machines are 100% efficient.

Question 4

At continental coasts, which physical mechanism naturally brings nutrients from deep to the surface?

Accepted Answer

Upwelling caused by ocean currents

Answer

Planetary winds at the equator

Answer

Movement of surface water only

Answer

Salinity stratification at depth

Question 5

DNA, which is also called __________ acid, is the hereditary material that carries genetic information in cells.

Accepted Answer

Deoxyribonucleic

Answer

Denatured

Answer

Di-ribonucleic

Answer

Decarbonated

RRB Group D 2025 Question Paper (19-Aug-2026) (Shift 3)

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