HSC Science कक्षा १२ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Chemistry

Account for the following:

Aniline does not undergo Friedel-Crafts reaction.

Arrange the following.

In increasing order of basic strength aniline, p-toluidine and p-nitro aniline

Arrange the following.

In increasing order of basic strength C₆H₅NH₂, C₆H₅NHCH₃, C₆H₅NH₂, p-Cl-C₆H₄-NH₂

Identify A, B and C.

Identify A to E in the following sequence of reactions.

Which one of the following rotates the plane polarized light towards left?

The correct corresponding order of names of four aldoses with configuration given below Respectively is:

Which one given below is a non-reducing sugar?

\[\ce{Glucose ->[(HCN)] Product ->[(hydrolysis)] Product ->[(HI + Heat)] A}\], the compound A is:

Assertion: A solution of sucrose in water is dextrorotatory. But on hydrolysis in the presence of little hydrochloric acid, it becomes levorotatory.

Reason: Sucrose hydrolysis gives equal amounts of glucose and fructose. As a result of this change in sign of rotation is observed.

The number of sp² and sp³ hybridised carbon in fructose are respectively ____________.

Complete hydrolysis of cellulose gives ____________.

Glucose is an aldose. Which one of the following reactions is not expected with glucose?

α-D (+) Glucose and β-D (+) glucose are ____________.

Which of the following are epimers?

What are reducing and non-reducing sugars?

Why carbohydrates are generally optically active?

Classify the following into monosaccharides, oligosaccharides and polysaccharides.

Starch

Classify the following into monosaccharides, oligosaccharides and polysaccharides.

Fructose

Classify the following into monosaccharides, oligosaccharides and polysaccharides.

Sucrose