ASSERTION AND REASON DIRECTION : In the following questions, a statement of assertion (A) is followed by a statement of reason (

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ASSERTION AND REASON DIRECTION : In the following questions, a statement of assertion (A) is followed by a statement of reason (

R). Mark the correct choice as: (a) Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A). (b) Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A). (c) Assertion (A) is true but reason (R) is false. (d) Assertion (A) is false but reason (R) is true. Questions: 1. Assertion : Camphor disappears without leaving any residue. Reason : Camphor undergoes sublimation. (1 Point) Option a Option b Option c Option d 2. Assertion : Liquids diffuse easily as compared to gases. Reason : Inter molecular forces are greater in liquids. (1 Point) Option a Option b Option c Option d 3.Assertion : There is no change in the temperature of a substance when it undergoes a change of state through it is still being heated. Reason : The heat supplied is absorbed either as latent heat of fusion or as latent heat of vaporization. (1 Point) Option a Option b Option c Option d 4.Assertion : During evaporation of liquids, the temperature remains unaffected. Reason : Kinetic energy of the molecules is directly proportional to temperature. (1 Point) Option a Option b Option c Option d 5.Assertion : It is easier to cook food at high altitudes. Reason : The boiling point of water decreases at high altitudes. (1 Point) Option a Option b Option c Option d 6.Assertion : A gas can be easily compressed by applying pressure. Reason : Since the inter-particle spaces in the gaseous state are very small, they cannot be decreased by applying pressure. (1 Point) Option a Option b Option c Option d 7.Assertion : The inter molecular forces in solid state are stronger than those in the liquid state. Reason : The space between the particles of matter is called inter molecular space. (1 Point) Option a Option b Option c Option d 8.Assertion : When a beam of light is passed through a colloidal solution placed in a dark place the path of the beam becomes visible. Reason : Light gets scattered by the colloidal particles. (1 Point) Option a Option b Option c Option d 9.Assertion : A solution of table salt in a glass of water is homogeneous. Reason : A solution having different composition throughout is homogeneous. (1 Point) Option a Option b Option c Option d 10.Assertion : A true solution do not exhibits Tyndall effect. Reason : A true solution is a heterogeneous mixture.Immersive Reader (1 Point) Option a Option b Option c Option d

Chemistry

1 answer:

KiRa [2.9K] · Answer 1 · 2026-02-17T14:58:55+03:00

Answer:

1) A

2) D

3) A

4) B

5) D

6) C

7) B

8) A

9) C

10) C

Explanation:

Sublimation is the term used for when a solid turns directly into a gas without first becoming a liquid. Therefore, camphor, when it transitions straight from solid to gas, is classified as a sublime material.

Gases diffuse at a faster rate than liquids due to the stronger intermolecular forces present in liquids, while gases exhibit negligible intermolecular forces.

When a material is subjected to heating, it reaches a stage where the temperature remains constant even as heat continues to be added. This temperature plateau denotes a phase transition, with the heat supplied turning into latent heat for either fusion or vaporization, depending on the specific transition occurring.

While it's accurate that evaporation happens at all temperatures and that the kinetic energy in molecules correlates with temperature, the latter does not clarify the former. Evaporation occurs because some surface particles have higher energy and escape due to unbalanced forces.

Cooking at higher altitudes is slower due to lower temperatures, while boiling water takes less time due to the decreased boiling point.

Gases can be compressed with ease because they occupy vastly less volume compared to the container's overall space. This significant gap between gas particles allows for easy compression.

The solid state experiences the strongest intermolecular forces. However, the reason given, while accurate, is not a fitting explanation for the assertion made.

This phenomenon is known as the Tyndall effect. Light beams are scattered by colloidal particles, making the beam's pathway visible within the colloidal mixture.

A salt solution is classified as homogeneous. Such a solution maintains uniformity throughout. If variations in composition arise, it becomes heterogeneous. Therefore, this explanation is incorrect.

A true solution will not show the Tyndall effect because its particles are smaller than those in colloidal solutions. A true solution cannot be regarded as a heterogeneous mixture, hence this reason is erroneous.