HSC Science (Electronics) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Chemistry

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. (_______)

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

The polynucleotide contains uracil. (________)

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

The polynucleotide contains D-ribose. (_______)

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

The polynucleotide contains guanine. (_______)

Write the sequence of the complementary strand for the following segment of a DNA molecule.

5' - CGTTTAAG - 3'

Write the sequence of the complementary strand for the following segment of a DNA molecule.

5' - CCGGTTAATACGGC - 3'

Write the names and schematic representations of all the possible dipeptides formed from alanine, glycine and tyrosine.

Give two evidences for presence of formyl group in glucose.

Draw a neat diagram for the following:

Haworth formula of glucopyranose.

Draw a neat diagram for the following:

Zwitter ion

Draw a neat diagram for the following:

Haworth formula of maltose

Draw a neat diagram for the following:

Secondary structure of protein

Draw a neat diagram for the following:

dAMP

Draw a neat diagram for the following:

One purine base from nucleic acid

Draw a neat diagram for the following:

Enzyme catalysis

Nylon fibres are ______.

Choose the correct option from the given alternatives.

Which of the following is naturally occurring polymer?

Silk is a kind of _____ fibre.

Choose the correct option from the given alternatives.

Dacron is another name of ______.