What is the temperature when density of water is the highest

• 5 degree Celsius
• 6 degree Celsius
• 4 degree Celsius
• 3 degree Celsius
Correct Option: C  [ 4 Degree Celsius ]

Remark:

Aurora Borealis is a light phenomenon seen at night in the:

• Northern hemisphere
• Equatorial region
• Barmunda Triangle region
• None of these
Correct Option: A  [ Northern hemisphere ]

Remark:

Monitor of a computer is:

• Input device
• Output device
• Input/Output device
• None of these
Correct Option: B  [ Output device ]

Remark:

Persistence of vision is the principle behind:

• Camera
• Binocular
• Cinema
• Periscope
Correct Option: C  [ Cinema ]

Remark:

One kilometre is equal to how many miles?

• 0.84
• 0.5
• 1.6
• 0.62
Correct Option: D  [ 0.62 ]

Remark:

Which polymer is used in making non-stick kitchen ware ?

• Nylon
• PVC
• Bakelite
• Teflon
Correct Option: D  [ Teflon ]

Remark:

Quality of petrol is expressed in:

• Gold number
• Cetane number
• Methane number
• Octane number
Correct Option: D  [ Octane number ]

Remark:

Which of the following statements is not true about Bt cotton ?

• Bt cotton has increased profit margin of farmers
• Use of insecticides has reduced significantly
• Seeds of Bt cotton are cheaper than non-GM seeds
• Since the use of Bt cotton India's cotton export has doubled.
Correct Option: C  [ Seeds of Bt cotton are cheaper than non-GM seeds ]

Remark:

Tetraethyl lead (TEL) is

• a catalyst used in burning fossil fuel
• an antioxidant
• a reductant
• an antiknock compound
Correct Option: D  [ an antiknock compound ]

Remark:

In organic farming:

• intercropping is not used
• manures are not used
• biofertilizers are not used
• chemical fertilizers are not used
Correct Option: D  [ chemical fertilizers are not used ]

Remark: