General Knowledge

Science & Technology

Easy

Which of the following statement is incorrect about heat?

Heat is a form of energy which raises the temperature of matter.

Heat decreases the volume of matter.

Heat changes the state and physical properties of matter.

Heat brings about chemical change.

✅ Correct Option: 2

Heating normally makes particles move faster and spread apart, so volume generally increases rather than decreases. Raising temperature, changing state and driving chemical reactions are all genuine effects of heat, so the incorrect statement is that heat decreases volume.

2025: 14 May Shift 2

The method of protecting steel and iron from rusting by coating them with a thin layer of zinc is called ___________?

2025: 30 May Shift 2

Which among the following is NOT a horticulture crop?

2026: 21 May Shift 1

Match List-I with List-II

List-I (Process)	List-II (Energy Change)
(A) Heat is evolved	(I) Chemiluminiscent Reaction
(B) Heat is absorbed	(II) Photochemical Reaction
(C) Light is required	(III) Endothermic Reaction
(D) Light is evolved	(IV) Exothermic Reaction

Choose the correct answer from the options given below:

2026: 31 May Shift 1

Match the LIST-I with LIST-II

LIST-I (Fuel gas)	LIST-II (Major Constituents)
A. Water gas	I. Butane, Propane
B. Coal gas	II. Hydrogen, Methane, Carbon monoxide
C. CNG	III. Methane, Ethane
D. LPG	IV. Carbon Monoxide, Hydrogen

Choose the correct answer from the options given below:

2026: 20 May Shift 1

Match List-I with List-II

List-I	List-II
Inventors	Inventions
(A) Homi J. Bhabha	(I) White Revolution
(B) Verghese Kurien	(II) Raman Effect
(C) C.V. Raman	(III) Surgery
(D) Sushruta	(IV) Indian Nuclear Programme

Choose the correct answer from the options given below:

2026: 25 May Shift 1

Match the LIST-I with LIST-II

LIST-I (Natural Source)		LIST-II (Name of Acid)
A. Vinegar	I.	Acetic Acid
B. Orange	II.	Oxalic Acid
C. Curd	III.	Citric Acid
D. Tomato	IV.	Lactic Acid

Choose the correct answer from the options given below:

Which of the following statement is incorrect about heat?

Solution

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