Organic Chemistry PYQ — Page 33

A sample of $0.125g$ of an organic compound when analysed by Duma's method yields $22.78\mathrm{mL}$ of nitrogen gas collected over $\mathrm{KOH}$ solution at $280K$ and $759\mathrm{mmHg}$. The percentage of nitrogen in the given organic compound is____ (a) The vapour pressure of water at $280K$ is $14.2\mathrm{mmHg}$ (b) $R=0.082L\mathrm{atm}{K}^{-1}{\mathrm{mol}}^{-1}$

In the given reaction sequence, the major product '$C$' is : ${C}_{8}{H}_{10}\underset{{H}_{2}{\mathrm{SO}}_{4}}{\overset{{\mathrm{HNO}}_{3}}{\longrightarrow }}A\underset{\Delta }{\overset{{\mathrm{Br}}_{2}}{\longrightarrow }}B\underset{\mathrm{KOH}}{\overset{\mathrm{alcoholic}}{\longrightarrow }}C$

The products formed in the following reaction, $A$ and $B$ are 

What is the major product of the following reaction? 

The correct sequential order of the reagents for the given reaction is 

The total number of monobromo derivatives formed by the alkanes with molecular formula ${C}_{5}{H}_{12}$ is (excluding stereo isomers)

The intermediate $X$, in the reaction 

While estimating the nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from $0.25g$ of the compound neutralized $2.5\mathrm{mL}$ of $2{\mathrm{MH}}_{2}{\mathrm{SO}}_{4}$. The percentage of nitrogen present in organic compound is _____ .

The separation of two coloured substances was done by paper chromatography. The distances travelled by solvent front, substance $A$ and substance $B$ from the base line are $3.25\mathrm{cm}.2.08\mathrm{cm}$ and $1.05\mathrm{cm}$. respectively. The ratio of ${R}_{f}$ values of $A$ to $B$ is (Answer the nearest integer)

The correct IUPAC name of the following compound is 

Which of the following reagents / reactions will convert '$A$' to '$B$'? 

Which of the following structures are aromatic in nature? 

The major product $(P)$ in the reaction 

Which of the following carbocations is most stable:

${C}_{6}{H}_{12}{O}_{6}\overset{\mathrm{Zymase}}{\longrightarrow }A\rightarrow _{\Delta }^{\mathrm{NaOI}}B+{\mathrm{CHI}}_{3}$ The number of carbon atoms present in the product $B$ is

The number of ${\mathrm{sp}}^{3}$ hybridised carbons in an acyclic neutral compound with molecular formula ${C}_{4}{H}_{5}N$ is

The correct order of nucleophilicity is

Which of the following is the strongest acid?

Markovnikovs rule is applicable to:

Which among the following is the strongest Bronsted base?

Sugar moiety in DNA and RNA molecules respectively are

Kjeldahl's method was used for the estimation of nitrogen in an organic compound. The ammonia evolved from $0.55g$ of the compound neutralised $12.5\mathrm{mL}$ of $1M{H}_{2}{\mathrm{SO}}_{4}$ solution. The percentage of nitrogen in the compound is (Nearest integer)

Which will have the highest enol content?

The number of chiral alcohol(s) with molecular formula ${C}_{4}{H}_{10}O$ is ________ (Assume stereoisomers as different chiral alcohols)