The d-and f-Block Elements — Chemistry STD 12 Science — Question

Write IUPAC names of the following compounds and classify them into primary, secondary and tertiary amines.
(CH3)₃CNH₂

Note: In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

1. Assertion and reason both are correct statements and reason is correct explanation for assertion.
2. Assertion and reason both are correct statements but reason is not correct explanation for assertion.
3. Assertion is correct statement but reason is wrong statement.
4. Assertion and reason both are incorrect statements.
5. Assertion is wrong statement but reason is correct statement.

Assertion: When a solution is separated from the pure solvent by a semipermeable membrane, the solvent molecules pass through it from pure solvent side to the solution side.
Reason: Diffusion of solvent occurs from a region of high concentration solution to a region of low concentration solution.

Using IUPAC norms write the formula for the following:
Tetrahydroxozincate (II).

What will be the effect of temperature on the solubility of NaOH in water?

What is meant by 'lanthanoid contraction'?

Give names of the reagent that bring about the following transformation:
Allyl alcohol to propenal.

Answer the following questions.
Which of the following biomolecules is insoluble in water? Justify. Insulin, Haemoglobin, Keratin.

How the following conversion can be carried out?
Toluene to benzyl alcohol.

Account for the following:
Aniline gets coloured on standing in air for a long time.

Give an example of a zwitter ion.