Question # 1

Incomplete combustion of alkanes produce.

Choose an answer

Carbon dixoide only

Carbon monoxide only

Carbon monoxide carbon black and water

Carbon dioxide and carbon black

Volatility of hydrocarbons deceases with:

Choose an answer

decrease of molecular mass

increase of molecular mass

increase of double or triple bonds

decrease of triple bonds

Marsh gas is mostly :

Choose an answer

ethane

methane

butane

propane

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?

Choose an answer

C₈H₈

C₈H₁₆

C₈H₁₈

C₈H₂₀

When bromine water is added to acetylene its red-brown colour is changed into:

Choose an answer

red

green

violet

discharged

Amont the followign substitution reaction is characteristics of.

Choose an answer

Alkanes

Alkenes

Alkynes

None of these

Dehydrohalogenation takes place in the presence of .

Choose an answer

NaOH aqueous

Alcoholic KOH

Aqeous KOH

Alcoholic NaOH

Which is present 85% in natural gas?

Choose an answer

Ethane

Propane

Methane

Butane

Traces of acetylene are present to coal gas about.

Choose an answer

0.06 %

0.08%

1.1 %

90%

Which one of the following is gas at room temperature:

Choose an answer

C2H6

C6H14

C6H6

C8H18

Alkanes give reaction only

Choose an answer

Addition

Decomposition

Substitution

Displacement

General formula of alkynes is:

Choose an answer

C_nH_n

C_nH_2n

C_nH_2n+2

C_nH_2n-2

More Classes

Other Links

10th Class Chemistry Chapter 12 Hydrocarbons English Medium KPK Boards Online Mcqs MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer