RRB Group D 2025 Question Paper (3-Aug-2026) (Shift 1)

Question 1

Since parenchyma tissue mainly stores food and other materials, its cells require enough internal space. Therefore, parenchyma cells are generally ________.

Accepted Answer

Loosely packed with intercellular spaces

Answer

Tightly packed without spaces

Answer

Hardened with minerals

Answer

Dead and hollow

Question 2

A coastal region experiences algal blooms and coral bleaching after unusually high global temperatures. Which interaction between Earth's spheres best explains this effect?

Accepted Answer

Ocean warming lowers CO2 absorption and stresses marine life

Answer

Increased river flow improves the overall coral reef growth

Answer

Land plant growth completely replaces marine ecosystem loss

Answer

Reduced sunlight increases rate of photosynthesis in oceans

Question 3

A water purification system uses electromagnetic energy to kill bacteria. Which region of the spectrum is being utilised for this function?

Accepted Answer

Ultraviolet part of the spectrum

Answer

Infrared part of the spectrum

Answer

Visible part of the spectrum

Answer

Gamma part of the spectrum

Question 4

Which property of isotopes remains unchanged?

Accepted Answer

Chemical properties

Answer

Nuclear stability

Answer

Atomic mass

Answer

Physical properties

Question 5

Why do non-biodegradable substances show biological magnification?

Accepted Answer

They persist in organisms

Answer

They are not taken up by organisms

Answer

They are broken down quickly by organisms

Answer

They provide energy to organisms

RRB Group D 2025 Question Paper (3-Aug-2026) (Shift 1)

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