Q: The number of milk teeth in man is

A: 28

B: 29

C: 20

D: 12



Correct Option: C  [ 20 ]

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Q: The pale yellow colour of urine is due to the presence of which pigment?

A: Urophyll

B: Urochrome

C: Chlorophyll

D: Chloroplast



Correct Option: B  [ Urochrome ]

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Q: What is common in AIDS, hepatitis and typhoid fever ?

A: All are bacterial disease

B: All are water borne diseases

C: All are viral disease

D: All are spread by human beings



Correct Option: D  [ All are spread by human beings ]

Remark:


Q: The process in which living organisms are used to remove contaminants, pollution or other unwanted substances from soil or water is known as:

A: Biotechnology

B: bioremediation

C: Biodegradation

D: Biomagnification



Correct Option: B  [ bioremediation ]

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Q: Which of the following is a fossil fuel?

A: Coal

B: Solar energy

C: Quartz

D: Lava



Correct Option: A  [ Coal ]

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Q: Penicillin was invented by:

A: Christian Bernard

B: Alexander Fleming

C: Mc Collum

D: William Harvey



Correct Option: B  [ Alexander Fleming ]

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

A: 4-6

B: 2-4

C: 8-10

D: 12-16



Correct Option: A  [ 4-6 ]

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Q: The mountaineers carry oxygen with them because:

A: at an altitude of more than 5 km there is no air

B: the amount of air available to a person on mountain is lesser than that available on the ground

C: the temperature of air is lesser than that on the ground.

D: The pressure of air is higher than that on the ground.



Correct Option: B  [ the amount of air available to a person on mountain is lesser than that available on the ground ]

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Q: As per Bureau of Indian Standards (BIS) for drinking water acceptable limit for total hardness as CaCO3 is

A: 100 mg/l

B: 200 mg/l

C: 300 mg/l

D: None of these



Correct Option: B  [ 200 mg/l ]

Remark:


Q: The longest day in the southern Hemisphere is on :

A: 22nd December

B: 21st June

C: 21st March

D: 23rd September



Correct Option: A  [ 22nd December ]

Remark:
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