NEET 2020 Phase 1 | Thermodynamics Question 17 | Chemistry

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NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

The correct option for free expansion of an ideal gas under adiabatic condition is :

q = 0, $$\Delta $$ T < 0 and w > 0

q < 0, $$\Delta $$ T = 0 and w = 0

q > 0, $$\Delta $$ T > 0 and w > 0

q = 0, $$\Delta $$ T = 0 and w = 0

NEET 2019

MCQ (Single Correct Answer)

-1

In which case change in entropy is negative?

Sublimation of solid to gas

2H(g) $$ \to $$ H₂(g)

Evaporation of water

Expansion of a gas at temperature

NEET 2019

MCQ (Single Correct Answer)

-1

Under isothermal condition, a gas at 300 K expands from 0.1 L to 0.25 L against a constant external pressure of 2 bar. The work done by the gas is [Given that 1 L bar = 100 J]

25 J

30 J

-30 J

5 kJ

NEET 2018

MCQ (Single Correct Answer)

-1

The bond dissociation energies of X₂ , Y₂ and XY are in the ratio of 1 : 0.5 : 1. $$\Delta $$H for the formation of XY is –200 kJ mol^–1. The bond dissociation energy of X₂ will be

800 kJ mol^–1

200 kJ mol^–1

400 kJ mol^–1

100 kJ mol^–1

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NEET Subjects

Biology

Botany

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution