Properties of Matter Test

Result

Properties of Matter Test - 2

Score
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Rank
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Weekly Quiz Competition

Question 1
1 / -0

Statement-1: A wooden cylinder floats horizontally in a pond of water. By attaching a large cube of ice on one end of cylinder it can be made to float vertically.

Statement-2: To float a cylinder vertically in a liquid its centre of gravity should exist below centre of buoyancy of the submerged part of it.

A
Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.

B
Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.

C
Statement-1 is true but Statement-2 is false.

D
Statement-1 is false but Statement-2 is true.

Solution

For stable equilibrium, centre of gravity should exist below centre of
buoyancy of submerged part. Hence statement-1 false.
Question 2
1 / -0

Statement-1: When two soap bubbles of different radii are brought into contact, the common interface of contact bulges into the bubble of larger radii as shown.

Statement-2: Pressure inside a soap bubble of lesser radius is more than pressure inside a soap bubble of larger radius.

A
Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.

B
Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.

C
Statement-1 is true but Statement-2 is false.

D
Statement-1 is false but Statement-2 is true.

Solution

Since pressure inside bubble of smaller radius is more the common
interface should bulge inside bubble of larger radii. Hence statement-
2 is correct explanation of statement-1.