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:

West Bengal approved the construction of states 1st Deep Sea Port at

A) Udaipur	B) Digha
C) Bakkhali	D) Tajpur

Answer & Explanation Answer: D) Tajpur

Explanation:

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Filed Under: Indian Geography
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Q:

A sentence has been given in Active/Passive Voice. Out of the four given alternatives, select the one which best expresses the same sentence in Passive/Active Voice.

The fans invited the cricketer.

A) The cricketer was invited by the fans	B) The cricketer received an invitation by the fans
C) The cricketer is invited by the fans	D) The cricketer was invite by the fans

Answer & Explanation Answer: A) The cricketer was invited by the fans

Explanation:

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Filed Under: English
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Q:

The work done in one complete revolution of the moon around the earth is equal to

A) centripetal force x radius of the orbit of the moon	B) gravitational force x circumference of the orbit of the moon
C) gravitational force x diameter of the orbit of the moon	D) zero

Answer & Explanation Answer: D) zero

Explanation:

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Filed Under: Physics
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Q:

The tendency of undisturbed objects to stay at rest or to keep moving with the same velocity is called

A) velocity	B) force
C) momentum	D) inertia

Answer & Explanation Answer: D) inertia

Explanation:

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Q:

A spoon which looks bent is an example of which of the following?

A) Reflection	B) Refraction
C) Retention	D) Focus

Answer & Explanation Answer: B) Refraction

Explanation:

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Q:

Which of the following is the cleanest source of energy?

A) Biofuel	B) Fossil fuel
C) Nuclear power	D) Wind energy

Answer & Explanation Answer: D) Wind energy

Explanation:

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Filed Under: General Science
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Q:

Ocimum tenuiflorum is the scientific name of ___________.

A) Neem	B) Mango
C) Babul	D) Tulsi

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