The weight of a person on the surface of the moon will be about one-sixth of his weight on the surface of the earth. This is because

• The moon has no air.
• The moon has no water.
• The gravity of the moon is about half of the earth.
• The gravity of the moon is abouut one-sixth of that of the earth.
Correct Option: D  [ The gravity of the moon is abouut one-sixth of that of the earth. ]

Remark:

White lung disease is prevalent among the workers of:

• paper industry
• cement industry
• cotton industry
• pesticide industry
Correct Option: B  [ cement industry ]

Remark:

'Shock –absorbers' are usually made of steel as it:

• is not brittle
• has lower elasticity
• has higher elasticity
• has no ductile property
Correct Option: C  [ has higher elasticity ]

Remark:

Xylem helps in transportation of which of the following?

• food
• water
• nutrient
• both food and water
Correct Option: B  [ water ]

Remark:

Acid rain is caused by

• Humidity
• Pollutant gases
• Population explosion
• None of these
Correct Option: B  [ Pollutant gases ]

Remark:

LCD stands for

• Liquid Crystal Display
• Low Current Display
• Light Circuit Display
• None of the above
Correct Option: A  [ Liquid Crystal Display ]

Remark:

The brain of any computer system is:

• ALU
• Memory
• Control unit
• CPU
Correct Option: D  [ CPU ]

Remark:

The Kyoto Protocol is associated with :

• Environment
• Nuclear Power
• Trade
• none of these
Correct Option: A  [ Environment ]

Remark:

Which of the following is not a property of acids ?

• All acids have sour taste
• All acids are corrosive in nature
• For acidic solutions pH = <7
• Acids turn red litmus to blue
Correct Option: D  [ Acids turn red litmus to blue ]

Remark:

In which direction a rainbow is formed ?

• Above the sun
• Below the sun
• Opposite to the sun
• At the level of the sun
Correct Option: C  [ Opposite to the sun ]

Remark: