Explanation

• In a first-order reaction, the half-life is constant.
• It does not depend on the initial concentration of the reactant.
• So, even if concentration changes, half-life remains the same.

Last verified on 19-05-2026

Explanation

• The reaction rate depends on concentrations of A and B.
• Doubling [A] makes rate 4 times → order of A = 2.
• Doubling [B] makes rate double → order of B = 1.
• So total order = 2 + 1 = 3 (Third order reaction).

Last verified on 19-05-2026

Explanation

• PCC Full Form: Pyridinium Chlorochromate
• Type: Mild oxidizing agent
• Primary Alcohol → Aldehyde
• Secondary Alcohol → Ketone
• Usually used in organic solvents like dichloromethane (CH₂Cl₂).

Last verified on 19-05-2026

Explanation

• [Pt(NH₃)₂Cl₂] is a square planar coordination compound of platinum.
• It shows geometrical isomerism because the ligands can occupy different positions around the central metal atom.

The compound forms:

1. Cis-isomer
2. Trans-isomer

So, total geometrical isomers = 2.

Last verified on 19-05-2026