Question 1

Compare the reactivity of alkanes and alkenes.

Accepted Answer

Alkanes have sigma bond which is relatively inert. electrons are tightly held between the nuclei and give it stability.  While in alkenes pi bonds are less firmly held between the nuclei which make them reactive.

Question 2

What is Wolff Kishner reduction?

Accepted Answer

The addition of Hydrogen in aldehyde in the presence of Zinc amalgam catalyst and HCl.

Question 3

Define Markownikov's  rule.

Accepted Answer

The rule states that with the addition of a unsymmetrical reagent  to an  alkene, the negative component of reagent is added to the carbon with the least number of hydrogen atoms.

Question 4

Formula of choloform is

Accepted Answer

$CHCl_3$

Answer

$CH_2Cl_2$

Answer

$CCl_2$

Answer

$CH_3Cl$

Question 5

Preparation of vegetable ghee involves

Accepted Answer

Hydrogenation

Answer

Halogenation

Answer

Dehalogenation

Answer

Dehydrogenation

Question 6

The presence of double bond in a compound is sign of

Accepted Answer

unsaturation

Answer

none of these

Answer

saturation

Answer

substitution

Question 7

$\beta$ - $\beta$ dichlorosulphide is commonly known as

Accepted Answer

mustard gas

Answer

bio gas

Answer

laughing gas

Answer

phosgene gas

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