Who among the following is considered as the father of artificial intelligence ?

• Charles Babbage
• Lee De Forest
• John McCarthy
• J. P. Eckert
Correct Option: C  [ John McCarthy ]

Remark:

A vitamin requires cobalt for its activity. The vitamin is:

• Vitamin B₁₂
• vitamin D
• vitamin B₂
• Vitamin A
Correct Option: A  [ Vitamin B₁₂ ]

Remark:

What makes a lemon sour?

• Tartaric acid
• Oxalic acid
• Citric acid
• Hydrochloric acid
Correct Option: C  [ Citric acid ]

Remark:

A car is moving on a road and rain is falling vertically. Select the correct answer:

• The rain will strike the wind screen only
• The rain will strike the front screen only
• The rain will strike both the screens
• The rain will not strike any of the screens
Correct Option: B  [ The rain will strike the front screen only ]

Remark:

Which of the following is not a biofertilizer ?

• Rhizobium
• Mucor
• Azotobacter
• Anabaena
Correct Option: B  [ Mucor ]

Remark:

Which of the following is a fossil fuel?

• Coal
• Solar energy
• Quartz
• Lava
Correct Option: A  [ Coal ]

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:

One kilobyte is equal to:

• 1024 bytes
• 2048 bytes
• 1023 bytes
• 10000 bytes
Correct Option: A  [ 1024 bytes ]

Remark:

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:

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: