Question : If the curved surface area of a cylinder is increased by 20% and height is decreased by 4%, then the net decrease or increase in the volume will be:

Option 1: 36% decrease

Option 2: 20% increase

Option 3: 50% increase

Option 4: 33% decrease

Question : During a boom, the deficit of the government will reduce automatically due to_________.

Option 1: increase in tax revenue

Option 2: increase in GDP

Option 3: decrease in tax revenue

Option 4: decrease in GDP

Question : On decreasing the price of a fan by 30%, its sales increase by 40%. What will be the percentage decrease in its revenue?

Option 1: 2% decrease

Option 2: 5% decrease

Option 3: 8% decrease

Option 4: 3% decrease

Question : The surface tension of water on adding detergent to it:

Option 1: increases

Option 2: decreases

Option 3: no change

Option 4: becomes zero

Question : Fat present below the skin surface in our body acts as a barrier against
 

Option 1: loss of heat from the body

Option 2: loss of essential body fluids

Option 3: loss of salt from the body

Option 4: entry of harmful micro-organisms from the environment