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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'.

 

The climb upside (1)/ the mountains (2)/ was not easy. (3)/No Error (4)

 

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

Explanation:
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Filed Under: English
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Q:

During the past century, the temperature of Earth has increased by ________.

A) 0.6 deg C B) 1.6 deg C
C) 2.6 deg C D) 3.6 deg C
 
Answer & Explanation Answer: A) 0.6 deg C

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Q:

Which among the following is false about natural rubber?

A) It is an elastomer B) It is a monomer of cis­isoprene
C) Natural rubber is a polymer of chloroprene D) It is heated with sulphur compounds to improve its properties
 
Answer & Explanation Answer: B) It is a monomer of cis­isoprene

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Filed Under: Chemistry
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Q:

Among the following states, the literacy rate is highest in

A) Orissa B) Punjab
C) Maharashtra D) Mizoram
 
Answer & Explanation Answer: D) Mizoram

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Filed Under: Indian Geography
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Q:

Ethylene is a ______ molecule.

A) polar B) ionic
C) covalent D) nonpolar
 
Answer & Explanation Answer: D) nonpolar

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Filed Under: Biology
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Q:

Which one of the following is commonly used for pulp bleaching in the paper industry?

A) Mild sulphuric acid B) Glucose isomerase
C) peroxide D) Iodine and water
 
Answer & Explanation Answer: C) peroxide

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Filed Under: Chemistry
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Q:

What is the pH of water?

A) 7 B) 5
C) 3 D) 1
 
Answer & Explanation Answer: A) 7

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Filed Under: Chemistry
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Q:

Propyne and propene can be distinguished by

A) AgNO₃ in ammonia B) conc. H₂SO₄
C) dil. KMnO₄ D) Br₂ in CCl₄
 
Answer & Explanation Answer: A) AgNO₃ in ammonia

Explanation:

Propene, being an alkene, and propyne, being a alkyne, are distinguished using the common chemical tests namely ammoniacal silver nitrate or ammoniacal cuprous chloride. Ammoniacal silver nitrate is also called as Tollen's reagent.

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