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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Filed Under: Chemistry
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Q:

Atomic number of which of the following elements is greater than that of Phosphorus?

A) Aluminium	B) Silicon
C) Chlorine	D) Magnesium

Answer & Explanation Answer: C) Chlorine

Explanation:

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Q:

If the rupee depreciates, how the exporters are affected?

A) They are unaffected	B) They are in loss
C) They are in profit	D) They get credit crunch

Answer & Explanation Answer: C) They are in profit

Explanation:

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Filed Under: Indian Economy
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Q:

Money in India consists of ___________.

A) paper currency	B) current deposits
C) metallic coins	D) All options are correct

Answer & Explanation Answer: D) All options are correct

Explanation:

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Filed Under: General Awareness
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Q:

In Microsoft Word, _____ is a position we set for placing and aligning text on a page.

A) Standard tool bar	B) View Buttons
C) Formatting tool bar	D) Tab stop

Answer & Explanation Answer: D) Tab stop

Explanation:

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Filed Under: Computer
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Q:

Blocking in experimental design is useful because it

A) keeps the experimenter from knowing which subjects are in the treatment group.	B) prevents response bias from entering into the experiment.
C) gives the quarterback enough time to throw the ball.	D) controls for multiple variables in an experiment.

Answer & Explanation Answer: D) controls for multiple variables in an experiment.

Explanation:

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Filed Under: Physics
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Q:

An object of 1.2 cm height is placed 30 cm before a concave mirror of focal length of 20 cm toget a real image at a distance of 60 cm from the mirror. What is the height of the image formed?

A) -3.6 cm	B) -2.4 cm
C) 1.2 cm	D) 2.4 cm

Answer & Explanation Answer: B) -2.4 cm

Explanation:

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Filed Under: Physics
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Q:

What is the minimum age to qualify for Lok Sabha Elections?

A) 25 years	B) 30 years
C) 21 years	D) 18 years

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