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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:

In which of the following solution the concentration of H+ ion is the maximum?

A) pH 6 B) pH 8
C) pH 5 D) pH 9
 
Answer & Explanation Answer: C) pH 5

Explanation:
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Q:

In Microsoft Word, under paragraph formatting ___________ is used to align paragraph on right, left and center.

A) Font style B) Indentation
C) Alignment D) Spacing
 
Answer & Explanation Answer: C) Alignment

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Q:

Humidity is a measure of the _______________.

A) pressure in the air B) viscosity of the air
C) air resistance D) moisture in air
 
Answer & Explanation Answer: D) moisture in air

Explanation:
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Filed Under: Physics
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Q:

Which of the following glows with special colour depending on the nature of gas in the fluorescent tube?

A) Plasma B) Hydrogen
C) Helium D) Bose-Einstein condensate
 
Answer & Explanation Answer: A) Plasma

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Q:

The largest dolphin species is the orca, also called as ________.

A) Bottle Nose B) Baiji
C) Killer whale D) Tucuxi
 
Answer & Explanation Answer: C) Killer whale

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Q:

Which among the following countries is facing debt crisis?

A) China B) Canada
C) Germany D) Greece
 
Answer & Explanation Answer: D) Greece

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Filed Under: General Awareness
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Q:

The highest number of tube wells is found in which one of the following countries?

A) India B) Saudi Arabia
C) America D) China
 
Answer & Explanation Answer: A) India

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