Q:

Place these hydrocarbons in order of decreasing boiling point.

1. Paraffin

2. Octadecane

3. Hexane

4. Neohexane and

5. Ethane

A) Paraffin > Octadecane > Neohexane > Hexane > Ethane	B) Paraffin > Octadecane > Hexane > Neohexane > Ethane
C) Hexane > Paraffin > Octadecane > Neohexane > Ethane	D) None of the above

Answer & Explanation Answer: B) Paraffin > Octadecane > Hexane > Neohexane > Ethane

Explanation:

In hydrocarbon, the boiling point directly varies with the length of carbon chain. On increasing the number of carbon atom, the boiling point of the compound also increases. Paraffin contains highest number of carbon atoms whereas, ethane is comprised of two carbon atoms.

The decreasing order of boiling point of mention compounds is written as follows:

Paraffin > Octadecane > Hexane > Neohexane > Ethane

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10 131653

Q:

Select the antonym of

abominable

A) attractive	B) gross
C) grim	D) lousy

Answer & Explanation Answer: A) attractive

Explanation:

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0 131603

Q:

Select the synonym of

antagonize

A) alienate	B) placid
C) sync	D) serene

Answer & Explanation Answer: A) alienate

Explanation:

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0 131595

Q:

Select the antonym of

to placate

A) to provoke	B) to propitiate
C) to tranquilize	D) to mollify

Answer & Explanation Answer: A) to provoke

Explanation:

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0 131588

Q:

Select the synonym of

sheath

A) weapon	B) hide
C) encourage	D) coat

Answer & Explanation Answer: D) coat

Explanation:

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1 131405

Q:

Select the synonym of

rot

A) mature	B) stagnate
C) smell	D) decay

Answer & Explanation Answer: D) decay

Explanation:

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2 131099

Q:

Select the antonym of

loiter

A) lag	B) hasten
C) amble	D) loll

Answer & Explanation Answer: B) hasten

Explanation:

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0 130866

Q:

Select the synonym of

to visualise

A) to repudiate	B) to anticipate
C) to eschew	D) to scorn

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