Question : At high doses, _____________kills cancer cells or slows their growth by damaging their DNA. Cancer cells whose DNA is damaged beyond repair stop dividing or die. When the damaged cells die, they are broken down and removed by the body.

Option 1: Chemotherapy

Option 2: Radiation therapy

Option 3: Surgery

Option 4: Physiotherapy

Question : Chromosomes consists of

Option 1: DNA and lipids

Option 2: RNA and amino acids

Option 3: DNA and proteins

Option 4: RNA and sugar

Question : The cells which are responsible for the production of antibodies are:

Option 1: red blood cells

Option 2: neutrophils

Option 3: lymphocytes

Option 4: platelets

Question : In which of the following ways of heat transfer no medium is required?

Option 1: Radiation and Conduction both

Option 2: Conduction

Option 3: Convection

Option 4: Radiation

Question : If 18 mechanics can repair 90 cars in 10 days, how many mechanics will be required to repair 150 cars in 12 days?

Option 1: 25

Option 2: 30

Option 3: 20

Option 4: 27

Question : 'Take-off stage' in an economy means

Option 1: steady growth begins

Option 2: economy is stagnant

Option 3: the economy is about to collapse

Option 4: all controls are removed