Organic Chemistry PYQ — Page 37

$\overset{˙}{\mathrm{Cl}}+{\mathrm{CH}}_{4}\rightarrow A+B$ $A$ and $B$ in the above atmospheric reaction step are

${\mathrm{CH}}_{3}-{\mathrm{CH}}_{2}-\mathrm{CN}\rightarrow _{\mathrm{Ether}}^{{\mathrm{CH}}_{3}\mathrm{MgBr}}A\overset{{H}_{3}{O}^{+}}{\rightarrow }B\rightarrow _{\mathrm{HCl}}^{\mathrm{Zn}-\mathrm{Hg}}C$. The correct structure of $C$ is

Which of the following conditions or reaction sequence will NOT give acetophenone as the major product?

 Consider the above reaction sequence, the Product ‘$C$’ is

Two isomers '$A$' and '$B$' with molecular formula ${C}_{4}{H}_{8}$ give different products on oxidation with ${\mathrm{KMnO}}_{4}$ in acidic medium. Isomer '$A$' on reaction with ${\mathrm{KMnO}}_{4}/{H}^{+}$ results in effervescence of a gas and gives ketone. The compound '$A$' is

 Identify '$Z$' among the following

The reaction of  with bromine and $\mathrm{KOH}$ gives ${\mathrm{RNH}}_{2}$ as the end product. Which one of the following is the intermediate product formed in this reaction?

How many of the given compounds will give a positive Biuret test____? Glycine, Glycylalanine, Tripeptide, Biuret

During the denaturation of proteins, which of these structures will remain intact ?

$2.5g$ of protein containing only glycine $({C}_{2}{H}_{5}{\mathrm{NO}}_{2})$ is dissolved in water to make $500\mathrm{mL}$ of solution. The osmotic pressure of this solution at $300K$ is found to be $5.03\times {10}^{-3}$ bar. The total number of glycine units present in the protein is (Given : $R=0.083L\mathrm{bar}{K}^{-1}{\mathrm{mol}}^{-1})$

The number of oxygen present in a nucleotide formed from a base, that is present only in RNA is

A polysaccharide '$X$' on boiling with dil ${H}_{2}{\mathrm{SO}}_{4}$ at $393K$ under $2-3\mathrm{atm}$ pressure yields '$Y$' '$Y$' on treatment with bromine water gives gluconic acid. '$X$' contains $\beta$-glycosidic linkages only. Compound '$X$' is :

Compound '$P$' on nitration with dil. ${\mathrm{HNO}}_{3}$ yields two isomers $(A)$ and $(B)$. These isomers can be separated by steam distillations. Isomers $(A)$ and $(B)$ show the intramolecular and intermolecular hydrogen bonding respectively. Compound $(P)$ on reaction with conc. ${\mathrm{HNO}}_{3}$ yields a yellow compound '$C$', a strong acid. The number of oxygen atoms is present in compound '$C$'

Among the following structures, which will show the most stable enamine formation? (Where $\mathrm{Me}$ is $-{\mathrm{CH}}_{3}$)

Given below are two statements : Statement I: The esterification of carboxylic acid with an alcohol is a nucleophilic acyl substitution. Statement II: Electron withdrawing groups in the carboxylic acid will increase the rate of esterification reaction. Choose the most appropriate option

Animal starch is the other name of

Amongst the following, the major product of the given chemical reaction is 

The product formed in the following reaction.  is:

Which statement is NOT correct for p-toluenesulphonyl chloride?

Choose the correct option for the following reactions. 

 Consider the above reaction, the compound '$A$' is

Which reactant will give the following alcohol on reaction with one mole of phenyl magnesium bromide $(\mathrm{PhMgBr})$ followed by acidic hydrolysis? 

Total number of possible stereoisomers of dimethyl cyclopentane is

Given below are two statements : one is labelled as Assertion $A$ and the other is labelled as Reason $R$ Assertion $A$ : Aniline on nitration yields ortho, meta & para nitro derivatives of aniline. Reason $R$ : Nitrating mixture is a strong acidic mixture. In the light of the above statements, choose the correct answer from the options given below