Question # 1

Which of the following gas is used in warfare?

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Methane

Ethane gas

Mustard gas

None of these

Which hydrocarbon decolorizes the pink colour of acidic solution of potassium permanganate?

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CH₄

C₂H₄

C₂H₆

C₂H₅

Alkanes give reaction only

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Addition

Decomposition

Substitution

Displacement

Alkanes are produced in large amounts by cracking of

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Natural gas

Petroleum

Benzene

Xylol

One of the hydrocarbons reacts with one mole of hydrogen to form a saturated hydrocarbon. What is the formula could be of the x:

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C₃H₈

C₆H₁₂

C₄H₁₀

C₂H₁₆

Dehydrohalogenation of vicinal-dihalides take place in the presence of.

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NaOH

KOH

NaCl

None of these

Which gas creates suffocation and causes death?

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CO

CO₂

SO₃

SO₂

Molecular formula of butyne is .

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C₄H₆

C₃H₄

C₄H₇

C₄H₈

Dehydration means removal of.

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Water

Halogen

Hydrogen

All above.

In which one of the following is a substitution reaction?

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Halogenations of alkynes

Halogenations of alkenes

Halogenations of alkanes

Bromination of alkenes

The molecular formula of the first three members of the alkane hydrocarbons are CH_4,C₂H₆ and C₃H₈. What is the molecular formula for the eight alkane member, octane, which is found is petrol?

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C₈H₈

C₈H₁₆

C₈H₁₈

C₈H₂₀

Oxidation of alkenes produce.

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Glyoxal

Glycol

Oxalic acid

Formic acid

Which hydrocarbon molecule would have no effect on the aqueous solution of bromine?

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CH₄

C₁₀H₂₀

C₂H₄

C₂H₂

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