21.

The osmotic pressure of a dilute solution of an ionic compound XY in water is four times that of a solution of 0.01 M BaCl₂ in water. Assuming complete dissociation of the given ionic compounds is water, the concentration of XY (in mol L^-1 ) in solution is 

• 4 × 10^-4

• 16 × 10^-4

• 4 × 10^-2

• 6 × 10^-2

The major product of the following reaction is:

Aniline dissolved in dilute HCl is reacted with sodium nitrite at 0ºC. This solution was added dropwise to a solution containing equimolar mixture of aniline and phenol in dil. HCl. The structure of the major product is

The major product of the following reaction is

CH₃C≡CH $\underset{(\mathrm{ii}0 \mathrm{Dl}}{\overset{\left(\mathrm{i}\right)\hspace{0.17em}\mathrm{DCl} (equilaterent.)}{\to }}$

• CH₃C (I) Cl CHD₂

• CH₃CD (Cl) CHD (I)

• CH₃CD₂CH(Cl) (I)

• CH₃CD(I)CHD (Cl)

The increasing order of reactivity of the following compounds towards aromatic electrophilic substitution reaction is

• D < A < C < B

• B < C < A < D

• D < B < A< C

• A < B < C < D

Which of the following statement is not true about sucrose?

• On hydrolysis, it produces glucose and fructose

• It is also named as invert sugar

• It is non-reducing sugar

• The glycosidic linkage is present between C₁ of α-glucose and C₁ of β- fructose.

The major product of the following reaction is

The one that will show optical activity is: (en = ethane – 1,2, -diamine)

The major product of the following reaction is:

The major product of the following reaction is

CH₃CH=CHCO₂CH₃ $\stackrel{{\mathrm{LiAlH}}_4}{\to }$

• CH₃CH₂CH₂CO₂CH₃

• CH₃CH₂CH₂CH₂OH

• CH₃CH₂CH₂CHO

• CH₃CH=CHCH₂OH