Insulin is used in the treatment of

• Diabetes
• Anaemia
• Night Blindness
• Goitre
Correct Option: A  [ Diabetes ]

Remark:

The Kyoto Protocol is associated with :

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

Remark:

Which one of the following is a chemical change ?

• Burning of candle
• Melting of wax
• Vapourisation of water
• Magnetising of Iron
Correct Option: A  [ Burning of candle ]

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:

Red light is used in traffic signals because:

• It has the longest wavelength
• It is beautiful
• It is visible to people even with bad eyesight
• None of these
Correct Option: A  [ It has the longest wavelength ]

Remark:

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:

Which is the respiratory organ of fish?

• Ears
• Gills
• Skin
• Lungs
Correct Option: B  [ Gills ]

Remark:

In a forest ecosystem, green plants are

• the primary producers.
• the secondary consumers.
• the decomposers.
• both secondary consumers and decomposers.
Correct Option: A  [ the primary producers. ]

Remark: The green plant in the ecosystem are called producers. In a terrestrial ecosystem, major producers are herbaceous and woody plants. Likewise, producers in an aquatic ecosystem are various species like phytoplankton, algae and higher plants.

'Mesothelioma' is caused by toxicity of

• Arsenic
• Lead
• Mercury
• Asbestos
Correct Option: D  [ Asbestos ]

Remark:

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

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

Remark: