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131.

Cycloalkane has the formula :

132.

To differentiate between carbon-12, carbon-13 and carbon-14, the instrument that you would use is :

133.

A mixture of sand and iodine can be separated by:

134.

The number of isomeric hexanes is:

135.

Which of the following statement is wrong ?

Using Lassaigne's test nitrogen and sulphur present in organic compound can be tested
Using Beilstein's test the presence of halogen in a compound can be tested.
In Lassaigne's filtrate the nitrogen present in a organic compound is converted into NaCN
In the estimation of carbon, an organic compound is heated with CaO in a combustion tube

136.

Cis-trans isomers generally :

There are 4 structural isomers possible for C₄H₉Cl.

(i) 1-chlorobutane : CH₃-CH₂-CH₂-CH₂-Cl

(ii) 2-chlorobutane : CH₃-CH₂- $\overset{Cl}{\overset{|}{CH}}$ -CH₃

(iii) 2-chloro-2-methyl propane : CH₃- ${CH}_{|}^{|}_{{CH}_{3}}^{Cl}$ -CH₃

(iv) 1-chloro-2-methyl propane : CH₃-CH(CH₃)-CH₂Cl

138.

Which of the following compound is optically active?

139.

2-propanol + NaBr $\overset{Reflux}{\to}$ X. What is X?

140.

Propanal and propanone are