KVPY Stream-SA (Class 11) Chemistry: Questions 23 - 26 of 133

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Question number: 23

» States of Matter » Gaseous State » Ideal Gas Equation

Appeared in Year: 2011

MCQ▾

Question

An isolated box, equally partitioned contains two ideal gases A and B as shown

An isolated box containing two ideal gases

An Isolated Box Containing Two Ideal Gases

Find the change in enthalpy and entropy when partition removed

When the partition removed, the gases mix. The changes in enthalpy (∆H) and entropy (∆S) in the process, respectively, are

Choices

Choice (4) Response

a.

negative, zero

b.

zero, negative

c.

zero, positive

d.

positive, zero

Question number: 24

» Basic Concepts in Chemistry » Mole Concept

Appeared in Year: 2014

MCQ▾

Question

Zinc sulphate contains 22.65 % of zinc and 43.9 % of water of crystallization, if the law of constant proportions is true, then the weight of zinc required to produce 20 g of the crystals will be

Choices

Choice (4) Response

a.

4.53 g

b.

0.453 g

c.

453 g

d.

45.3 g

Question number: 25

» States of Matter » Gaseous State » Concept of Average, Root Mean Square and Most Probable Velocities

Appeared in Year: 2014

MCQ▾

Question

At room temperature, the average seed of Helium is higher than that of Oxygen by a factor of

Choices

Choice (4) Response

a.

Equation

b.

8

c.

6

d.

Equation

Question number: 26

» Principles of Organic Chemistry » Shapes of Simple Molecules » Classification Based on Functional Groups

Appeared in Year: 2013

MCQ▾

Question

Which of the following is a hydride?

Choices

Choice (4) Response

a.

Carbon structure with aldehyde compound: Choice A

Carbon Structure With Aldehyde Compound: Choice A

Find the hydride from given sarbon structures

b.

Carbon structure with aldehyde compound: Choice B

Carbon Structure With Aldehyde Compound: Choice B

Find the hydride from given sarbon structures

c.

Carbon structure with aldehyde compound: Choice C

Carbon Structure With Aldehyde Compound: Choice C

Find the hydride from given sarbon structures

d.

Carbon structure with aldehyde compound: Choice D

Carbon Structure With Aldehyde Compound: Choice D

Find the hydride from given sarbon structures

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