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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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Filed Under: Chemistry
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Q:

What is the other name of sodium carbonate?

A) Baking soda B) Washing soda
C) Baking powder D) No option is correct
 
Answer & Explanation Answer: B) Washing soda

Explanation:
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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

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Q:

Which one of the following is also regarded as Disguised unemployment?

A) Underemployment B) Frictional unemployment
C) Seasonal unemployment D) Cyclical unemployment
 
Answer & Explanation Answer: A) Underemployment

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Filed Under: Indian Economy
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Q:

A 'Market Economy' is one which

A) is controlled by the Government B) is free from the Government control
C) in influenced by international market forces D) All of these
 
Answer & Explanation Answer: B) is free from the Government control

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Q:

The credit for classifying the elements on the basis of their atomic masses goes to

A) John Dalton B) John Alexander Reina Newlands
C) Dmitri Mendeleev D) Johann Wolfgang Dobereiner
 
Answer & Explanation Answer: C) Dmitri Mendeleev

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Q:

The color of human skin depends upon

A) melanin B) carotenoids
C) anthocyanins D) chlorophylls
 
Answer & Explanation Answer: A) melanin

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Filed Under: Biology
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Q:

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech.

 

My brother said to me, "I was upset, but now I am fine."

 

A) My brother told me that he was upset, but now he was fine. B) My brother told me that he had been upset, but then he will be fine.
C) My brother told me that he had been upset, but then he was fine. D) My brother told me that he has been upset, but then he is fine.
 
Answer & Explanation Answer: C) My brother told me that he had been upset, but then he was fine.

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Filed Under: English
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