Which plant hormone promotes fruit ripening and is commercially used in India for tomato and mango maturation?

The correct answer is B: Ethylene. Ethylene (C₂H₄) is the ripening hormone that triggers color change, softening, and aroma development in climacteric fruits.

Which of the following elements has an electronic configuration of 2, 8, 7?

The correct answer is A: Chlorine. Chlorine (Cl) has atomic number 17, with electronic configuration 2, 8, 7 (K-shell: 2, L-shell: 8, M-shell: 7).

In the light-dependent reactions, where exactly does the photolysis of water occur?

The correct answer is B: Thylakoid membrane (lumen side). Water photolysis occurs in the thylakoid lumen as part of Photosystem II, releasing O2, H+, and electrons that drive the electron transport chain.

Which statement about entropy is correct according to the Second Law of Thermodynamics?

The correct answer is B: Entropy of the universe always increases. The Second Law of Thermodynamics states that for an isolated system, entropy always increases or remains constant, never decreases. This defines the direction of spontaneous processes and the arrow of time.

A gas expands against a constant external pressure of 2 atm. The work done by the gas is -500 J. What is the change in volume?

The correct answer is B: 2.47 L. Work done against constant pressure: W = -PΔV. Given W = -500 J and P = 2 atm = 2 × 101325 Pa. ΔV = -W/P = 500/(2 × 101325) ≈ 2.47 × 10⁻³ m³ = 2.47 L.

Home

Home › Subjects › General Science › Physics

General Science
Physics

Physics, Chemistry, Biology and more

34 Q 8 Topics Take Mock Test

Difficulty: All Easy Medium Hard 31–34 of 34

Topics in General Science

All Physics 106 Chemistry 9 Biology 2 Botany 78 Human Body 4 Disease & Health 2 Space & Astronomy 5 Environment 1

Q.31 Easy Physics

Sound cannot travel through?

A Water

B Steel

C Vacuum

D Air

Correct Answer: C. Vacuum

EXPLANATION

Sound needs medium, not vacuum.

Test

Q.32 Easy Physics

Ohm Law: V = ?

A I/R

B IR

C I+R

D I-R

Correct Answer: B. IR

EXPLANATION

V = I × R (Ohm Law).

Test

Q.33 Easy Physics

Unit of electric current?

A Volt

B Ohm

C Ampere

D Watt

Correct Answer: C. Ampere

EXPLANATION

Current measured in Amperes.

Test

Q.34 Easy Physics

Newton first law also called?

A Law of acceleration

B Law of gravitation

C Law of inertia

D Law of reaction

Correct Answer: C. Law of inertia

EXPLANATION

First law = Law of Inertia.

Test

1 2 3 4

All Subjects & Topics

Govt. Exams

Entrance Exams

Teacher Exams

Subjects

Quick Links

General Science Physics

General Science
Physics