Explanation

Proteases are enzymes that break down proteins by hydrolyzing peptide bonds.

Enzymes that catalyze hydrolysis reactions belong to the class of Hydrolases.

Explanation

PVC (Polyvinyl chloride) is formed by addition polymerization of vinyl chloride.

Polystyrene is also formed by addition polymerization of styrene (C₆H₅CH=CH₂).

Explanation

Lithium aluminium hydride (LiAlH₄) is a strong reducing agent.

It reduces carboxylic acids to primary alcohols effectively.

Explanation

Acetyl chloride (CH₃COCl) cannot be prepared directly from acetic acid due to the poor leaving ability of the –OH group.

It requires a chlorinating agent like PCl₅, PCl₃, or SOCl₂ for conversion.

Therefore, it cannot be prepared directly from acetic acid.

Explanation

The reaction NaOH + HCl → NaCl + H₂O is a neutralization reaction between a strong base and a strong acid.

The enthalpy change in such reactions is called the heat of neutralization.

Explanation

The British physicist Sir James Chadwick discovered neutrons in the year 1932.

He was awarded the Nobel Prize in Physics in the year 1935 for this discovery.

Explanation

For 2p orbitals, the principal quantum number (n) is 2.

The azimuthal quantum number (l) for a p-orbital is 1.

So, n = 2, l = 1 is correct.

Explanation

NaCl (sodium chloride) is formed by the electrostatic attraction between Na⁺ and Cl⁻ ions.

Such solids are classified as ionic solids due to the presence of ions arranged in a lattice.

Explanation

A solution that distills without change in composition is called an azeotropic mixture.

It behaves like a single substance during boiling, with constant boiling point and composition.

Explanation

Alcohol and water form a miscible liquid mixture with different boiling points.

Fractional distillation effectively separates them based on their boiling point differences.