Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Write the structure of the major organic product in each of the following reactions:
$CH subscript 3 CH left parenthesis Br right parenthesis CH subscript 2 CH subscript 3 plus NaOH space space rightwards arrow with Water on top$

125 Views

252. Write the structure of the major organic product in each of the following reactions:

CH subscript 3 CH subscript 2 Br plus space KCN space space rightwards arrow

134 Views

253. Write the structure of the major organic product in each of the following reactions:

straight C subscript 6 straight H subscript 5 ONa space plus space straight C subscript 2 straight H subscript 5 Cl space rightwards arrow

136 Views

254. Write the structure of the major organic product in each of the following reactions:

CH subscript 3 CH subscript 2 CH space equals space CH space plus space HBr space rightwards arrow with Peroxide on top

133 Views

255. Write the structure of the major organic product in each of the following reactions:

CH subscript 3 CH space equals space straight C left parenthesis CH subscript 3 right parenthesis subscript 2 space plus space HBr space space rightwards arrow

126 Views

256. p-Dichlorobenzene has higher melting point and solubility than those of o- and m-isomer. Discuss.

371 Views

257. The treatment of alkyl chlorides with aqueous KOH leads to the formation of alcohols but in presence of alcoholic KOH alkenes are major products. Explain.

Aqueous KOH contains only OH^-ions, which acts as nucleophile and these bring about hydrolysis of alkyl chlorides to the corresponding alcohol.

On the other hand, alcoholic KOH contains ethoxide ions (C₂H₅O^–), which are more basic than OH ions. Consequently, the ethoxide ions preferentially brings about dehydro halogenation to form alkenes e.g.,