Saliva helps in the digestion of:

• fats
• starch
• proteins
• vitamins
Correct Option: B  [ starch ]

Remark:

All enzymes are actually

• Protein
• Carbohydrates
• Fatty acids
• Steroids
Correct Option: A  [ Protein ]

Remark:

Minamata disease in Japan was caused due to pollution of water by :

• Lead
• Mercury
• Cyanide
• Arsenic
Correct Option: B  [ Mercury ]

Remark:

Which of the following is NOT an allotrope of carbon?

• Diamond
• Graphite
• C-60
• Methane
Correct Option: D  [ Methane ]

Remark:

A device that is responsible for changing the voltage is:

• Transformer
• Encoder
• Decoder
• Translator
Correct Option: A  [ Transformer ]

Remark:

Which among the following is present in refrigerator?

• Carbon dioxide
• Methane
• Helium
• Chlorotluorocarbon
Correct Option: D  [ Chlorotluorocarbon ]

Remark: Chlorotluorocarbons (CFCs) have recently been phased out and newer refrigerators will not contain CFCs. The use of CFCs was phased out by 2000 under the Montreal Protocol.

The amount of light entering into eye can be controlled and regulated by ___________ .

• Sclera
• cornea
• pupil
• retina
Correct Option: C  [ pupil ]

Remark:

The purest form of iron is

• White cast iron
• Grey cast iron
• Wrought iron
• Steel
Correct Option: C  [ Wrought iron ]

Remark:

Sericuluture is a rearing practice of :

• Fishes
• Silk worm
• Honey bees
• Earth worm
Correct Option: B  [ Silk worm ]

Remark:

Penicillin was invented by:

• Christian Bernard
• Alexander Fleming
• Mc Collum
• William Harvey
Correct Option: B  [ Alexander Fleming ]

Remark: