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Direction (Q. Nos. 10-12) This section contains 3 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THANT ONE is correct.
Q. Select correct statement(s).
- a)The water drop in vacuum is perfectly spherical
- b)The shape of water drop is distorted due to action of gravity
- c)Soaps and detergents drastically decrease the surface tension of water
- d)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.
Correct answer is option 'A,B,C'. Can you explain this answer?
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Direction (Q. Nos. 10-12) This section contains 3multiple choice quest...
The spherical shape is the shape in which it is most stable due to its surface tension. On earth also it is applicable. A drop of water wants to be in a spherical shape but is affected by other forces, so it becomes distorted. The shape is due to surface tension and not pressure. In space there is no force available to distort the spherical shape.
Adding soaps and detergents that disrupt the intermolecular attractions between adjacent water molecules can reduce the surface tension of water. Because they affect the surface properties of a liquid, soaps, and detergents are called surface-active agents, or surfactants.
Surface tension decreases when the temperature increases because cohesive forces decrease with an increase in molecular thermal activity.
Adding soaps and detergents that disrupt the intermolecular attractions between adjacent water molecules can reduce the surface tension of water. Because they affect the surface properties of a liquid, soaps, and detergents are called surface-active agents, or surfactants.
Surface tension decreases when the temperature increases because cohesive forces decrease with an increase in molecular thermal activity.
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Direction (Q. Nos. 10-12) This section contains 3multiple choice quest...
The correct statements are (a), (b), and (c).
Let's discuss each statement in detail:
a) The water drop in vacuum is perfectly spherical:
When a water drop is in a vacuum, there is no air resistance or external forces acting on it. As a result, the water drop takes up a spherical shape, which is the shape that minimizes surface area for a given volume. This happens because the cohesive forces between water molecules pull them inward, creating a spherical shape. Any external forces, such as air resistance or gravity, can distort the shape of the water drop.
b) The shape of the water drop is distorted due to the action of gravity:
In the presence of gravity, the water drop is subject to the force of gravity pulling it downward. As a result, the bottom of the water drop gets flattened, and the shape becomes distorted. The force of gravity is stronger on the lower part of the water drop, causing it to spread out and create a flattened shape.
c) Soaps and detergents drastically decrease the surface tension of water:
Surface tension is the property of a liquid that allows it to resist an external force and minimize its surface area. Water has a high surface tension due to the cohesive forces between water molecules. However, when soaps and detergents are added to water, they disrupt these cohesive forces and decrease the surface tension. This is why soap bubbles can form and why water spreads more easily on surfaces treated with soap or detergent.
d) Due to an increase in temperature, surface tension also increases and becomes maximum at the critical temperature:
This statement is incorrect. In general, as the temperature of a liquid increases, the surface tension decreases. This is because an increase in temperature increases the kinetic energy of the molecules, causing them to move more rapidly and overcome the cohesive forces that create surface tension. The critical temperature is the temperature above which a substance cannot exist in the liquid state, regardless of pressure. It is not related to the surface tension behavior with temperature.
Let's discuss each statement in detail:
a) The water drop in vacuum is perfectly spherical:
When a water drop is in a vacuum, there is no air resistance or external forces acting on it. As a result, the water drop takes up a spherical shape, which is the shape that minimizes surface area for a given volume. This happens because the cohesive forces between water molecules pull them inward, creating a spherical shape. Any external forces, such as air resistance or gravity, can distort the shape of the water drop.
b) The shape of the water drop is distorted due to the action of gravity:
In the presence of gravity, the water drop is subject to the force of gravity pulling it downward. As a result, the bottom of the water drop gets flattened, and the shape becomes distorted. The force of gravity is stronger on the lower part of the water drop, causing it to spread out and create a flattened shape.
c) Soaps and detergents drastically decrease the surface tension of water:
Surface tension is the property of a liquid that allows it to resist an external force and minimize its surface area. Water has a high surface tension due to the cohesive forces between water molecules. However, when soaps and detergents are added to water, they disrupt these cohesive forces and decrease the surface tension. This is why soap bubbles can form and why water spreads more easily on surfaces treated with soap or detergent.
d) Due to an increase in temperature, surface tension also increases and becomes maximum at the critical temperature:
This statement is incorrect. In general, as the temperature of a liquid increases, the surface tension decreases. This is because an increase in temperature increases the kinetic energy of the molecules, causing them to move more rapidly and overcome the cohesive forces that create surface tension. The critical temperature is the temperature above which a substance cannot exist in the liquid state, regardless of pressure. It is not related to the surface tension behavior with temperature.
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Direction (Q. Nos. 10-12) This section contains 3multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of whichONE or MORE THANT ONE is correct.Q.Select correct statement(s).a)The water drop in vacuum is perfectly sphericalb)The shape of water drop is distorted due to action of gravityc)Soaps and detergents drastically decrease the surface tension of waterd)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.Correct answer is option 'A,B,C'. Can you explain this answer?
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Direction (Q. Nos. 10-12) This section contains 3multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of whichONE or MORE THANT ONE is correct.Q.Select correct statement(s).a)The water drop in vacuum is perfectly sphericalb)The shape of water drop is distorted due to action of gravityc)Soaps and detergents drastically decrease the surface tension of waterd)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.Correct answer is option 'A,B,C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Direction (Q. Nos. 10-12) This section contains 3multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of whichONE or MORE THANT ONE is correct.Q.Select correct statement(s).a)The water drop in vacuum is perfectly sphericalb)The shape of water drop is distorted due to action of gravityc)Soaps and detergents drastically decrease the surface tension of waterd)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.Correct answer is option 'A,B,C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction (Q. Nos. 10-12) This section contains 3multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of whichONE or MORE THANT ONE is correct.Q.Select correct statement(s).a)The water drop in vacuum is perfectly sphericalb)The shape of water drop is distorted due to action of gravityc)Soaps and detergents drastically decrease the surface tension of waterd)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.Correct answer is option 'A,B,C'. Can you explain this answer?.
Direction (Q. Nos. 10-12) This section contains 3multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of whichONE or MORE THANT ONE is correct.Q.Select correct statement(s).a)The water drop in vacuum is perfectly sphericalb)The shape of water drop is distorted due to action of gravityc)Soaps and detergents drastically decrease the surface tension of waterd)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.Correct answer is option 'A,B,C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Direction (Q. Nos. 10-12) This section contains 3multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of whichONE or MORE THANT ONE is correct.Q.Select correct statement(s).a)The water drop in vacuum is perfectly sphericalb)The shape of water drop is distorted due to action of gravityc)Soaps and detergents drastically decrease the surface tension of waterd)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.Correct answer is option 'A,B,C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction (Q. Nos. 10-12) This section contains 3multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of whichONE or MORE THANT ONE is correct.Q.Select correct statement(s).a)The water drop in vacuum is perfectly sphericalb)The shape of water drop is distorted due to action of gravityc)Soaps and detergents drastically decrease the surface tension of waterd)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.Correct answer is option 'A,B,C'. Can you explain this answer?.
Solutions for Direction (Q. Nos. 10-12) This section contains 3multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of whichONE or MORE THANT ONE is correct.Q.Select correct statement(s).a)The water drop in vacuum is perfectly sphericalb)The shape of water drop is distorted due to action of gravityc)Soaps and detergents drastically decrease the surface tension of waterd)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.Correct answer is option 'A,B,C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
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Direction (Q. Nos. 10-12) This section contains 3multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of whichONE or MORE THANT ONE is correct.Q.Select correct statement(s).a)The water drop in vacuum is perfectly sphericalb)The shape of water drop is distorted due to action of gravityc)Soaps and detergents drastically decrease the surface tension of waterd)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.Correct answer is option 'A,B,C'. Can you explain this answer?, a detailed solution for Direction (Q. Nos. 10-12) This section contains 3multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of whichONE or MORE THANT ONE is correct.Q.Select correct statement(s).a)The water drop in vacuum is perfectly sphericalb)The shape of water drop is distorted due to action of gravityc)Soaps and detergents drastically decrease the surface tension of waterd)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.Correct answer is option 'A,B,C'. Can you explain this answer? has been provided alongside types of Direction (Q. Nos. 10-12) This section contains 3multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of whichONE or MORE THANT ONE is correct.Q.Select correct statement(s).a)The water drop in vacuum is perfectly sphericalb)The shape of water drop is distorted due to action of gravityc)Soaps and detergents drastically decrease the surface tension of waterd)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.Correct answer is option 'A,B,C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Direction (Q. Nos. 10-12) This section contains 3multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of whichONE or MORE THANT ONE is correct.Q.Select correct statement(s).a)The water drop in vacuum is perfectly sphericalb)The shape of water drop is distorted due to action of gravityc)Soaps and detergents drastically decrease the surface tension of waterd)Due to increase in temperature, surface tension also increases and becomes maximum at critical temperature.Correct answer is option 'A,B,C'. Can you explain this answer? tests, examples and also practice Class 11 tests.
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