361306
Assertion : Detergents should have small angles of contact Reason : If angle of contact is small detergents rinse the clothes dust in more time.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
When detergent is dissolved in water, surface tension decreases. The detergent spreads over longer part of cloth. So correct option is (3).
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361307
Assertion : More is the cohesive force, more is the surface tension. Reason : More cohesive force leads to more shrinking of liquid surface.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Surface tension can be understood as a property of a surface due to which it tries to acquire the minimum possible area. If cohesive force is more, the liquid is having the capability to shrink its surface more, i.e., surface area of the liquid is less and hence more is the surface tension.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361308
Read the Statement - A and Statement - B carefully to mark the correct option given below: Statement A : Viscosity of gases is greater than that of liquids. Statement B : Surface tension of a liquid decreases due to the presence of insoluble impurities.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Viscosity represent resistance of flow & in liquids molecules are closely packed. So viscosity of liquids is higher than gases. Surface tension of liquid increases on adding soluble material as they make bond with solvent increasing density & thus increasing intermolecular attractions. But on adding insoluble impurities, surface tension of liquid decreases. So option (2) is right.
JEE - 2024
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361309
Statement A : The surface tension force does not depend on the shape of the object. Statement B : A needle placed carefully on the surface of water may float while a ball of the same material will always sink.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Surface tension force depends on the shape of the object also. So option (2) is correct.
NEET Test Series from KOTA - 10 Papers In MS WORD
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PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361306
Assertion : Detergents should have small angles of contact Reason : If angle of contact is small detergents rinse the clothes dust in more time.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
When detergent is dissolved in water, surface tension decreases. The detergent spreads over longer part of cloth. So correct option is (3).
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361307
Assertion : More is the cohesive force, more is the surface tension. Reason : More cohesive force leads to more shrinking of liquid surface.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Surface tension can be understood as a property of a surface due to which it tries to acquire the minimum possible area. If cohesive force is more, the liquid is having the capability to shrink its surface more, i.e., surface area of the liquid is less and hence more is the surface tension.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361308
Read the Statement - A and Statement - B carefully to mark the correct option given below: Statement A : Viscosity of gases is greater than that of liquids. Statement B : Surface tension of a liquid decreases due to the presence of insoluble impurities.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Viscosity represent resistance of flow & in liquids molecules are closely packed. So viscosity of liquids is higher than gases. Surface tension of liquid increases on adding soluble material as they make bond with solvent increasing density & thus increasing intermolecular attractions. But on adding insoluble impurities, surface tension of liquid decreases. So option (2) is right.
JEE - 2024
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361309
Statement A : The surface tension force does not depend on the shape of the object. Statement B : A needle placed carefully on the surface of water may float while a ball of the same material will always sink.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Surface tension force depends on the shape of the object also. So option (2) is correct.
361306
Assertion : Detergents should have small angles of contact Reason : If angle of contact is small detergents rinse the clothes dust in more time.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
When detergent is dissolved in water, surface tension decreases. The detergent spreads over longer part of cloth. So correct option is (3).
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361307
Assertion : More is the cohesive force, more is the surface tension. Reason : More cohesive force leads to more shrinking of liquid surface.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Surface tension can be understood as a property of a surface due to which it tries to acquire the minimum possible area. If cohesive force is more, the liquid is having the capability to shrink its surface more, i.e., surface area of the liquid is less and hence more is the surface tension.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361308
Read the Statement - A and Statement - B carefully to mark the correct option given below: Statement A : Viscosity of gases is greater than that of liquids. Statement B : Surface tension of a liquid decreases due to the presence of insoluble impurities.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Viscosity represent resistance of flow & in liquids molecules are closely packed. So viscosity of liquids is higher than gases. Surface tension of liquid increases on adding soluble material as they make bond with solvent increasing density & thus increasing intermolecular attractions. But on adding insoluble impurities, surface tension of liquid decreases. So option (2) is right.
JEE - 2024
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361309
Statement A : The surface tension force does not depend on the shape of the object. Statement B : A needle placed carefully on the surface of water may float while a ball of the same material will always sink.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Surface tension force depends on the shape of the object also. So option (2) is correct.
361306
Assertion : Detergents should have small angles of contact Reason : If angle of contact is small detergents rinse the clothes dust in more time.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
When detergent is dissolved in water, surface tension decreases. The detergent spreads over longer part of cloth. So correct option is (3).
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361307
Assertion : More is the cohesive force, more is the surface tension. Reason : More cohesive force leads to more shrinking of liquid surface.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Surface tension can be understood as a property of a surface due to which it tries to acquire the minimum possible area. If cohesive force is more, the liquid is having the capability to shrink its surface more, i.e., surface area of the liquid is less and hence more is the surface tension.
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361308
Read the Statement - A and Statement - B carefully to mark the correct option given below: Statement A : Viscosity of gases is greater than that of liquids. Statement B : Surface tension of a liquid decreases due to the presence of insoluble impurities.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Viscosity represent resistance of flow & in liquids molecules are closely packed. So viscosity of liquids is higher than gases. Surface tension of liquid increases on adding soluble material as they make bond with solvent increasing density & thus increasing intermolecular attractions. But on adding insoluble impurities, surface tension of liquid decreases. So option (2) is right.
JEE - 2024
PHXI10:MECHANICAL PROPERTIES OF FLUIDS
361309
Statement A : The surface tension force does not depend on the shape of the object. Statement B : A needle placed carefully on the surface of water may float while a ball of the same material will always sink.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Surface tension force depends on the shape of the object also. So option (2) is correct.