What does the airbag, used for safety of car driver, contain?

• Sodium bicarbonate
• Sodium azide
• Sodium nitrite
• Sodium peroxide
Correct Option: B  [ Sodium azide ]

Remark:

Which is the correct order to show units from largest to smallest ?

• Millilitres, decilitre, lite
• Litre, decilitre, millilitre
• Decilitre, millilitre, litre
• Litre, millilitre, decilitre
Correct Option: B  [ Litre, decilitre, millilitre ]

Remark:

The rusting of the iron is the example of:

• Oxidation
• Reduction
• Polymerisation
• Galvanization
Correct Option: A  [ Oxidation ]

Remark:

Which of the following will not cause any atmospheric pollution ?

• Hydrogen
• Sulphur dioxide
• Carbon dioxide
• Carbon monoxide
Correct Option: A  [ Hydrogen ]

Remark:

A concave lens always forms an image which is:

• Real and erect
• Virtual and erect
• Real and inverted
• Virtual and inverted
Correct Option: B  [ Virtual and erect ]

Remark:

One (1) molecule of CFC deplete __________ molecule of Ozone in the Ozonosphere.

• 1,00,000
• 10,000
• 10,00,000
• No one of the above
Correct Option: A  [ 1,00,000 ]

Remark:

An electric bulb has a filament made of

• Boron carbide
• Tungsten
• Tantalum
• Rhenium
Correct Option: B  [ Tungsten ]

Remark:

Arrange the following places in ascending order of local acceleration due to gravity:

(i) Polar region of the earth's surface at the sea level

(ii) Surface of the moon

(iii) Centre of the earth

(iv) Equatorial region on the earth's surface at the sea level

Select the correct answer using the codes given below.

• (i), (ii), (iii), (iv)
• (iii), (ii), (iv), (i)
• (iii), (ii), (i), (iv)
• (iii), (i), (ii), (iv)
Correct Option: B  [ (iii), (ii), (iv), (i) ]

Remark:

Which of the following is/are not associated with the reduction of Greenhouse gases ?
i) Kigali Amendment to Montreal Protocol
ii) Stockholm convention
iii) Kyoto Protocol

• (ii) only
• (i) and (ii) only
• (i) and (iii) only
• (i), (ii) and (iii)
Correct Option: A  [ (ii) only ]

Remark:

Any part of the computer, which can be seen by the eyes and felt by touching, is called:

• Hardware
• Software
• Liveware
• Firmware
Correct Option: A  [ Hardware ]

Remark: