Humidity is a measure of

• pressure in the air
• viscosity of the air
• air resistance
• moisture in air
Correct Option: D  [ moisture in air ]

Remark:

__________ is the first missile developed in India.

• Agni
• Aakash
• Trishul
• Prithvi
Correct Option: D  [ Prithvi ]

Remark:

Iron deficiency in Blood is referred as

• Goitre
• Anaemia
• Osteoporosis
• Kwashiorko
Correct Option: B  [ Anaemia ]

Remark:

Which one of the following solutions will not turn blue litmus to red litmus?

• Lemon juice
• Acetic acid
• Sodium hydroxide
• Hydrochloric acid
Correct Option: C  [ Sodium hydroxide ]

Remark:

The optimum dissolved oxygen level (in mg/litre) required for survival of aquatic organism is:

• 4-6
• 2-4
• 8-10
• 12-16
Correct Option: A  [ 4-6 ]

Remark:

Liquid natural gas (LNG) predominantly contains _______ in liquid form.

• Ethane
• Ethylene
• Methane
• Methylene
Correct Option: C  [ Methane ]

Remark:

Vinegar is chemically a:

• diluted citric acid
• diluted acetic acid
• diluted hydrochloric acid
• diluted oxalic aid
Correct Option: B  [ diluted acetic acid ]

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:

Main constituents of biogas are:

• Methane and carbon monoxide
• Butane and carbon monoxide
• Methane and carbon dioxide
• Ethylene and carbon dioxide
Correct Option: C  [ Methane and carbon dioxide ]

Remark:

Which one is the hardest form of carbon ?

• Coke
• Graphite
• Diamond
• Charcoal
Correct Option: C  [ Diamond ]

Remark: