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 125221

Q:

Select the synonym of:

incisive

A) daffy	B) concise
C) stolid	D) tedious

Answer & Explanation Answer: B) concise

Explanation:

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Q:

Select the synonym of

thrashing

A) edifice	B) prefabrication
C) bashing	D) contour

Answer & Explanation Answer: C) bashing

Explanation:

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Q:

Select the antonym of

deliberate

A) judge	B) imprudent
C) cogitate	D) argue

Answer & Explanation Answer: B) imprudent

Explanation:

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Q:

Select the antonym of

hollow

A) alveolate	B) cleft
C) cavernous	D) solid

Answer & Explanation Answer: D) solid

Explanation:

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0 124335

Q:

Select the antonym of

stupor

A) swoon	B) consciousness
C) trance	D) apathy

Answer & Explanation Answer: B) consciousness

Explanation:

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Q:

Saturated carbon compounds can form which types of chain structures?

I. Straight chain

II. Branched chain

A) Only I	B) Only II
C) Neither I nor II	D) Both I and II

Answer & Explanation Answer: D) Both I and II

Explanation:

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2 124126

Q:

Select the antonym of

coalesce

A) separate	B) adhere
C) cleave	D) amalgamate

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