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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:

Metals are placed on which side of the Modern Periodic table?

A) Top row B) Left side
C) Right side D) Bottom row
 
Answer & Explanation Answer: B) Left side

Explanation:
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Filed Under: Chemistry
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Q:

Which tax causes a burden on the poorer section of the society?

A) Direct Tax B) Indirect Tax
C) Both Direct and Indirect Tax D) None of these
 
Answer & Explanation Answer: B) Indirect Tax

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Filed Under: Indian Economy
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Q:

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select ‘No Error’.

Our school administration should seriously consider (1)/ given students more responsibility and empowering (2)/ the student council to play more than a symbolic role. (3)/ No error (4)

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: B) 2

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Filed Under: English
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Q:

Which of these railway stations is a World Heritage Site?

A) Kharagpur Railway Station B) Howrah Station
C) Chhatrapati Shivaji Terminus D) Kanpur Central
 
Answer & Explanation Answer: C) Chhatrapati Shivaji Terminus

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Filed Under: Indian Geography
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Q:

Algae belongs to which of the following levels of the ecosystem?

A) Decomposers B) Destructors
C) Producers D) Consumers
 
Answer & Explanation Answer: C) Producers

Explanation:
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Filed Under: Biology
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Q:

Which type of pathogen causes the water­-borne disease E. coli Infection?

A) Protozoan B) Parasitic
C) Bacterial D) Viral
 
Answer & Explanation Answer: C) Bacterial

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Filed Under: Biology
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Q:

Which feature is shared by all monosaccharides?

A) In their linear forms, they all contain a carbonyl and several hydroxyl functional groups. B) They are all pentoses.
C) They all contain more than one sugar. D) In their linear forms, they all contain a carboxyl and several hydroxyl functional groups.
 
Answer & Explanation Answer: A) In their linear forms, they all contain a carbonyl and several hydroxyl functional groups.

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Filed Under: Biology
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