Question : At the boiling point of liquids, its

Option 1: temperature increases

Option 2: atmospheric pressure increases

Option 3: temperature remains constant

Option 4: vapour pressure decreases

Question : If a speed of rotation of the earth increases, the weight of the body

Option 1:

Option 2:

Option 3:

Option 4:

Question : Iron rusts quickly in

Option 1: Rain water

Option 2: Sea water

Option 3: Distilled water

Option 4: River water

Question : The weights of two iron balls are 3.5 kg and 7.5 kg. What is the percentage weight of the first ball with respect to the weight of the second ball?

Option 1: $46\frac{2}{3}$%

Option 2: $35$%

Option 3: $46\frac{1}{3}$%

Option 4: $45$%

Question : A conical vessel (solid) is made of iron. Its base radius is 7 cm and its height is 15 cm. If the weight of the iron per cubic centimetre is 15 g, what is the weight of the vessel?

Option 1: 13.55 kg

Option 2: 12.55 kg

Option 3: 14.55 kg

Option 4: 11.55 kg