Q:

Hopman cup is related to _______.

A) Badminton	B) Lawn tennis
C) Cricket	D) Hockey

Answer & Explanation Answer: B) Lawn tennis

Explanation:

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Q:

A. R. Rahman won Oscars for the movie "Slumdog Millionaire" in the category of _____ .

A) Best Sound Mixing	B) Best Original Score
C) Best Picture	D) Best Foreign Language Film

Answer & Explanation Answer: B) Best Original Score

Explanation:

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Q:

Which one of the following statements is correct?

A) The oxidation number for hydrogen is always zero.	B) The oxidation number for hydrogen is always + 1.
C) The oxidation number for hydrogen is always -1.	D) Hydrogen can have more than one oxidation number.

Answer & Explanation Answer: D) Hydrogen can have more than one oxidation number.

Explanation:

Hydrogen has two possible oxidation numbers: +1 and -1.

-1 in case of hydrides.

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Q:

Crystallisation is an example of?

A) Physical Change	B) Chemical Change
C) Chemical Reaction	D) Galvanisation

Answer & Explanation Answer: A) Physical Change

Explanation:

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Q:

Algal bloom results from

A) Global warming	B) Salination
C) Eutrophication	D) Biomagnification

Answer & Explanation Answer: C) Eutrophication

Explanation:

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Filed Under: Biology
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Q:

Which one of the followingis notan allotrope of carbon?

A) Coal	B) Diamond
C) Graphite	D) Graphene

Answer & Explanation Answer: A) Coal

Explanation:

Allotropy is the property of some chemical elements to exist in two or more different forms, or allotropes, when found in nature. There are several allotropes of carbon like diamond, graphite, graphene, fullerene, etc.Coal is not an allotrope of carbon because it is not 100% carbon. It contains lot of silica, sulphur and other compounds of carbon apart from carbon.

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Filed Under: Chemistry
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Q:

Which of the following is a mixture?

A) Water	B) Air
C) Carbon dioxide	D) Oxygen

Answer & Explanation Answer: B) Air

Explanation:

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Q:

Particulates (< 1 μm size) remaining suspended in air indefinitely and transported by wind currents are called

A) Mists	B) Fumes
C) Aerosols	D) Smoke

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