Chemistry

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(b) Equanil is a tranquilizer used in controlling depression and hypertension.

This is a Multiple Answer Type Questions as classified in NCERT Exemplar

The Correct option is b.

Nucleic acids are nucleotide polymers linked together by phosphodiester linkage. DNA and RNA are two examples. Nucleotides are formed by linking of nucleosides with three phosphate groups consuming a significant amount of energy making it an endothermic reaction.

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(a) 5′ and 3′ linkages are present between pentose sugars of nucleotides.

Phosphodiester links the two nucleotides together to form a dinucleotide.

Between the pentose sugars of nucleotides, there are 5′ and 3′ connections. In the process of adding phosphate to a dinucleotide, a significant quantity of energy is consumed.

This is a Multiple Choice Questions as classified in NCERT Exemplar

Ans:  (A) 

The NH₂ group is directly attached to the benzene ring in aniline and other aryl amines. As a result, the unshared electron pair on the nitrogen atom is conjugated with the benzene ring, making it less available for protonation.

This is a multiple choice answer as classified in NCERT Exemplar

(d) All soaps are made by boiling fats or oils with suitable hydroxide. Variations are made by adding different raw materials. Sodium laurylsulphate and sodium dodecylbenzenesulphonate are anionic detergents.

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Ans: The Correct option is b.

Ascorbic acid is the chemical name for vitamin C. Aspartic acid is an amino acid, adipic acid is a dicarboxylic acid with an eight-carbon chain, and saccharic acid is a dicarboxylic acid made by oxidising glucose with HNO₃ Vitamin C is a water-soluble vitamin that serves a variety of activities in the human body.

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Ans:  (C)

Because of the electron-releasing nature of the alkyl group, it (R) pushes electrons towards nitrogen, making the unshared electron pair more available for sharing with the acid's proton. Furthermore, the +I effect of the alkyl group stabilizes the substituted ammonium ion formed from the amine by dispersing the positive charge.

As a result, alkylamines are more powerful bases than ammonia.

As a result, the basic nature of aliphatic amines should increase as the number of alkyl groups increases.

This is a Multiple Choice Questions as classified in NCERT Exemplar

Ans: Correct answer: (D) 

This is a multiple choice answer as classified in NCERT Exemplar

(b) The compound that causes general antidepressant action on the central nervous system belongs to the class of tranquilizers.