HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions for Chemistry

Choose the most correct option.

The hybridisation of nitrogen in primary amine is ____________.

Isobutylamine is an example of ______.

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Which type of amine does produce N₂ when treated with HNO₂?

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Carbylamine test is given by ____________.

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Identify ‘B’ in the following reactions

\[\ce{CH3 - C ≡ N ->[Na/C2H5OH] A ->[NaNO2/dilHCl]B}\]

\[\ce{CH2OH-CO-(CHOH)4-CH2OH}\] is an example of ______.

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Open chain formula of glucose does not contain ______.

Which of the following does not apply to \[\ce{CH2NH2-COOH}\]?

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Tryptophan is called essential amino acid because

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A disulphide link gives rise to the following structure of a protein.

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A disulphide link gives rise to the following structure of a protein.

RNA has ______.

Give scientific reasons:

The disaccharide sucrose gives negative Tollens test while the disaccharide maltose gives a positive Tollens test.

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On complete hydrolysis DNA gives equimolar quantities of adenine and thymine.

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α-Amino acids have high melting points compared to the corresponding amines or carboxylic acids of comparable molecular mass.

Give scientific reasons:

α-Amino acids have high melting points compared to the corresponding amines or carboxylic acids of comparable molecular mass.

Give scientific reasons:

Hydrolysis of sucrose is called inversion.

Give scientific reasons:

On boiling egg albumin becomes opaque white.

Give scientific reasons:

On boiling egg albumin becomes opaque white.

The following statement applies to DNA only, some to RNA only, and some to both. Label them accordingly.

The polynucleotide is double stranded. (_______)