HSC Science Class 12 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Explain AAAA and ABABA and ABCABC type of three dimensional packing with the help of neat diagram.

Calculate the percentage efficiency of packing in the case of a body-centred cubic crystal.

What is the two dimensional coordination number of a molecule in square close packed layer?

Derive integrated rate law for a zero-order reaction \[\ce{A -> Product}\].

Explain the common ion effect with an example.

Give three uses of emulsions.

In the following reaction,

\[\ce{HC ≡ CH ->[H2SO4][HgSO4] X}\]

Product ‘X’ will not give

Which one of the following reduces tollens reagent.

The reagent used to distinguish between acetaldehyde and benzaldehyde is ____________.

A carbonyl compound A having molecular formula C₅H₁₀O forms crystalline precipitate with sodium bisulphate and gives positive iodoform test. A does not reduce Fehling's solution. Identify A.

Insulin, a hormone chemically is ___________.

Give two differences between Hormones and vitamins.

What are hormones? Give examples.

Write the Zwitter ion structure of alanine.

A complex in which the oxidation number of the metal is zero is ____________.

Schottky defect in a crystal is observed when

The cation leaves its normal position in the crystal and moves to some interstitial position, the defect in the crystal is known as ____________.

Assertion: due to Frenkel defect, density of the crystalline solid decreases.

Reason: in Frenkel defect cation and anion leaves the crystal.

The crystal with a metal deficiency defect is ____________.

What are point defects?