Acid rain is caused due to the pollution of environment by:

• Carbondioxide and Nitrogen
• Carbon monoxide and Carbondioxide
• Ozone and Methane
• Some oxide of Nitrogen and Sulpher
Correct Option: D  [ Some oxide of Nitrogen and Sulpher ]

Remark: Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air

A substance used in the fire extinguisher under the trade name of Pyrene is:

• Carbon dioxide
• Chloroform
• Carbon tetrachloride
• Bleaching powder
Correct Option: C  [ Carbon tetrachloride ]

Remark:

What happens to a person who receives the wrong type of blood?

• all the arteries constrict
• all the arteries dialate
• the RBCs agglutinate
• the spleen and lymph nodes deteriorate
Correct Option: C  [ the RBCs agglutinate ]

Remark:

Which one of the following animals is not "warm-blooded"?

• Hen
• Tiger
• Bat
• Toad
Correct Option: D  [ Toad ]

Remark: frogs and toads are cold-blooded. This means their body temperatures change to match the temperatures of their environment.

Muscle fatigue is due to accumulation of

• Carbon Dioxide
• Creatinine
• Lactic acid
• Ethyl alcohol
Correct Option: C  [ Lactic acid ]

Remark:

When a bus starts suddenly, the passengers sitting in the bus lean backward. This is because of :

• Inertia of rest
• Inertia of motion
• Momentum
• Gravity of the earth
Correct Option: A  [ Inertia of rest ]

Remark:

Which kind of Power accounts for the largest share of power generation in India ?

• Hydro-electric
• Solar
• Thermal
• Nuclear
Correct Option: C  [ Thermal ]

Remark:

Which of the following metals is the most ductile metal?

• Gold
• Aluminium
• Copper
• Tin
Correct Option: A  [ Gold ]

Remark:

The art and science of map making is called:

• remote sensing
• cartography
• photogrammetry
• mapping
Correct Option: B  [ cartography ]

Remark:

Hydro?uoric acid is not kept in glass bottles because it reacts with:

• visible light
• sodium oxide of glass
• aluminium oxide of glass
• silicon dioxide of glass
Correct Option: D  [ silicon dioxide of glass ]

Remark: