RRB Group D 2025 Question Paper (20-Aug-2026) (Shift 2)

Question 1

Consider the reaction: Na2SO4(aq) + BaCl2(aq) &rarr; BaSO4(s) + 2NaCl(aq) Which feature of this reaction justifies classifying it specifically as a precipitation reaction?

Accepted Answer

Insoluble barium sulphate forms in solution

Answer

Reactants exist initially as aqueous solutions

Answer

Sodium chloride remains dissolved in water

Answer

Two ionic compounds exchange partners

Question 2

A reaction between an acid and a base produces:

Accepted Answer

Salt and water

Answer

Only salt

Answer

Only water

Answer

Hydrogen gas and metal

Question 3

A zoologist observes a fixed aquatic animal with no tissue differentiation but efficient water filtration. Which of the following is most likely to happen if this animal was placed in a terrestrial environment?

Accepted Answer

It would desiccate due to inability to retain water

Answer

It would use tentacles to trap moisture

Answer

It would move to moist areas for survival

Answer

It would close its pores to prevent drying

Question 4

Calcium carbonate is heated to produce calcium oxide and carbon dioxide; this is a type of:

Accepted Answer

decomposition reaction

Answer

combination reaction

Answer

addition reaction

Answer

displacement reaction

Question 5

Which of the following is secreted directly into the blood and carried to different parts of the body?

Accepted Answer

Adrenaline

Answer

Bile juice

Answer

Saliva

Answer

Pancreatic juice

RRB Group D 2025 Question Paper (20-Aug-2026) (Shift 2)

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