Question # 1

Traces of acetylene are present to coal gas about.

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0.06 %

0.08%

1.1 %

90%

Ethyne is oxidized by alkaline KMnO₄ then ....... hydroxyl group add to the triple bond.

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Two

Three

Four

Five

Dehydration means removal of.

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Water

Halogen

Hydrogen

All above.

The end product of oxidation of acetylene is .

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Oxalic acid

Glyoxal

Glycol

None of these

Marsh gas is mostly consisted of.

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Butane

Propane

Ethane

Methane

Molecular formula of butyne is .

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C₄H₆

C₃H₄

C₄H₇

C₄H₈

Which is the substitution reaction in the following?

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Halogenation of alkenes

Halogenation of alkynes

Bromination of alkene

Halogenation of alkanes

Which gas creates suffocation and causes death?

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CO

CO₂

SO₃

SO₂

Which one of these hydrocarbon molecules would have no effect on an aqueous solution of bromine?

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CH₄

C₁₀H₂₀

C₂H₄

C₂H₂

Ethylene glycol can be prepared with the reaction of KMnO₄ and _____

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CH = CH

CH₃ - CH₃

CH₃CH₂CH₃

CH₂= CH₃

General formula of alkenes.

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C_n H_2n-2

C_nH_2n

C_nH_2n+2

C_nH_2n-1

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

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C₃H₈

C₆H₁₂

C₄H₁₀

C₇H₁₆

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