RRB Ministerial & Isolated Categories 2024 Laboratory Assistant Question Paper (11-Sep-2025) Shift 3

Question 1

Which of the following is NOT a characteristic feature of eukaryotic cells?

Accepted Answer

Absence of nucleus

Answer

Organised genetic material

Answer

Presence of membrane-bound organelles

Answer

Presence of nuclear envelope

Question 2

In the root tip, the region of maturation is situated:

Accepted Answer

proximal to the region of elongation

Answer

immediately below the meristematic region

Answer

surrounding the root cap

Answer

adjacent to the shoot apex

Question 3

When comparing the stability of carbocations, which trend is directly supported by hyperconjugation theory?

Accepted Answer

$Tertiary > Secondary > Primary > CH_3^+$

Answer

$Secondary > Tertiary > Primary > CH_3^+$

Answer

$CH_3^+ > Primary > Secondary >  Tertiary$

Answer

$Primary > Tertiary > Secondary > CH_3^+$

Question 4

A gas system is absorbing 300 J of heat (Q) from the surrounding and work (W) done on the system is 60 J. What is the change in the internal energy ($\Delta U$) of the system?

Accepted Answer

360 J

Answer

-240 J

Answer

60 J

Answer

240 J

Question 5

The magnitude of restoring force $F=50.0$ N, and displacement (x) of marble from its equilibrium position is 0.5 m. What will be the value of force constant (k)?

Accepted Answer

100.0 $\frac{N}{m}$

Answer

25.0 $\frac{N}{m}$

Answer

5.0 $\frac{N}{m}$

Answer

50.0 $\frac{N}{m}$

RRB Ministerial & Isolated Categories 2024 Laboratory Assistant Question Paper (11-Sep-2025) Shift 3

RRB Ministerial and Isolated Categories Mock Test Series 2025