CHEMISTRY ONLINE TEST 19

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CHEMISTRY ONLINE TEST 19

జనవరి 27, 2026జనవరి 26, 2026 - by Saheb Shaik

BIKKI NEWS : 27-01-2026

chemistry online test 19 for JEE NEET EAPCET EXAMS. జేఈఈ మెయిన్స్, నీట్, ఎఫ్‌సెట్ వంటి ప్రవేశ పరీక్షల కొరకు డైలీ ఉచితంగా కెమిస్ట్రీ ఆన్లైన్ టెస్ట్.

chemistry online test 19 for JEE NEET EAPCET EXAMS.

CHEMISTRY ONLINE TEST 19

1 / 10

Gibbs free energy change (ΔG) is given by —

ΔU + PΔV

ΔH + TΔS

ΔS − TΔH

ΔH − TΔS

2 / 10

Which of the following is an intensive property?

Temperature

Mass

Enthalpy (H)

Volume

3 / 10

The efficiency of a heat engine can never be 100% because —

Energy is lost

Heat engines are inefficient

Work cannot be produced

Entropy always increases

4 / 10

In an exothermic reaction, ΔH is —

Negative

Positive

Zero

Maximum

5 / 10

Which process has ΔU = 0?

Adiabatic expansion

Isochoric process

Isobaric process

Isothermal expansion of ideal gas

6 / 10

Enthalpy change (ΔH) is equal to heat absorbed at —

Constant volume

Constant pressure

Constant temperature

Adiabatic condition

7 / 10

For an isolated system, the change in entropy is —

Positive for spontaneous process

Always positive

Always negative

Zero

8 / 10

The SI unit of entropy is —

J

J mol⁻¹

J K⁻¹

J mol⁻¹ K⁻¹

9 / 10

Which of the following is a state function?

Work

Internal energy

Heat

Path length

10 / 10

The first law of thermodynamics is a statement of —

Conservation of energy

Conservation of mass

Entropy change

Spontaneity

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