Collagen fibres of connective tissue are

Collagen fibres of connective tissue are

Options

(a) White (b) Yellow (c) Colourless (d) Red

Correct Answer:

White

Explanation:

Collagen fibres are white formed of a protein, occur in bundles, thick nonelastic with […]

Water in the soil available to plants is

Water in the soil available to plants is

Options

(a) gravitational water (b) capillary water (c) hygroscopic water (d) hypertonic water

Correct Answer:

capillary water

Explanation:

Water is present in the soil in […]

Boron is unable to form BF₆³⁻ because of

Boron is unable to form BF₆³⁻ because of

Options

(a) high electronegativity of boron (b) high electronegativity of fluorine (c) lack of d-orbitals in boron (d) less difference in electronegativity between B and […]

CCl₄ and freons

CCl₄ and freons

Options

(a) are green compounds because they are green coloured (b) depletes ozone concentration (c) causes increase in ozone concentration (d) have no effect on ozone concentration

Correct Answer:

depletes […]

Tollen’s test can be used to distinguish

Tollen’s test can be used to distinguish

Options

(a) propionaldehyde and acetone (b) propanol and propionic acid (c) propene and iso-butene (d) iso-propanol and propanol

Correct Answer:

propionaldehyde and acetone

Explanation:

Propionaldehyde (propanal) […]

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