Which of the following gases do plants and trees give out during photosynthesis?

A. Hydrogen
B. Nitrogen
C. Oxygen
D. Carbon dioxide

Which of the following is not a waterborne disease?

A. Cholera
B. Amoebiasis
C. Typhoid
D. Influenza

Which metal is added to steel to make it stainless steel?

A. Chromium
B. Aluminium
C. Carbon
D. Copper

The average kinetic energy of the molecules of a body determines?

A. Heat
B. Temperature
C. Internal energy
D. None

Which of the following is responsible for largest amount of oxygen on earth?

A. Peat bogs
B. Algae
C. Trees
D. None of these

Chemically finger nails are made up of ____________?

A. Carbohydrate
B. Fats
C. Protein
D. Starch

Very small time intervals are accurately measured by the___________?

A. Pabsars
B. White dwarfs
C. Atomic clocks
D. None of these

Who invented the Hot Air Balloon?

A. Davy
B. Montgolfier
C. Edison
D. Jarvik

Addison’s disease is caused by the deficiency of____________?

A. Antiduretic harmone
B. Luteinising harmone
C. Melanophore stimulating harmone
D. Adrenocorticotrophic harmone

The SI unit of charge is __________?

A. Ampere
B. Coulomb
C. Ohm
D. Volt