Explanation

• The active electrophile in nitration of benzene is nitronium ion (NO₂⁺).
• It is generated from a mixture of concentrated HNO₃ and H₂SO₄.

Last verified on 19-05-2026

Explanation

• The Arrhenius plot relates the rate constant (k) with temperature (T).
• When we plot ln k vs 1/T, we get a straight line.
• Whose slope is negative activation energy divided by gas constant.

Last verified on 19-05-2026

Explanation

• According to the Arrhenius equation, the relationship between rate constant (k) and temperature (T) is exponential.
• When we plot ln k vs 1/T, it gives a straight line.
• It showing a linear relationship.

Last verified on 19-05-2026

Explanation

• Temperature affects liquids and gases differently in terms of viscosity.

When temperature increases:

• Liquids: viscosity decreases
• Gases: viscosity increases

So, both behave in opposite ways.

Last verified on 19-05-2026

Explanation

• Compressibility factor (Z) shows how real gas deviates from ideal gas behavior.
• If Z < 1, the gas is more compressible than expected.
• It means attractive forces between molecules are strong.

Last verified on 19-05-2026

Explanation

• In radioactive decay or first-order reactions, each half-life reduces the amount to half.
• After every half-life, the remaining substance keeps dividing by 2.
• So after 3 half-lives, the remaining amount becomes (1/2)³ = 1/8.

Last verified on 19-05-2026

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