CBSE EXAMINATION PAPER-2024

The specific sequence in which amino acids are arranged in a protein is called its

Out of the following alkenes, the one which will produce tertiary butyl alcohol on acid catalysed hydration is

Auto-oxidation of chloroform in air and light produces a poisonous gas known as

Transition metals are known to make interstitial compounds. Formation of interstitial compounds makes the transition metal

Isotonic solutions have the same

Which of the following cell was used in Apollo space programme?

The rate of a reaction increases sixteen times when the concentration of the reactant increases four times. The order of the reaction is

Dilution affects both conductivity as well as molar conductivity. Effect of dilution on both is as follows

Assertion (A): Zr and Hf are of almost similar atomic radii.

Reason (R): This is due to Lanthanoid contraction.

Assertion (A): The units of rate constant of a zero order reaction and rate of reaction are the same

Reason (R): In a zero order reaction, the rate of reaction is independent of the concentration of reactants.

Assertion (A): Inversion of configuration is observed in SN₂ reaction.

Reason (R): The reaction proceeds with the formation of a carbocation.

Assertion (A): p-methoxyphenol is a stronger acid than p-nitrophenol.

Reason (R): Methoxy group shows +I effect whereas nitro group shows -I effect.

Carry out the following conversions:

(i) Nitrobenzene to Aniline

(ii) Aniline to Phenol.

Show that in case of a first order reaction, the time taken for completion of 99% reaction is twice the time required for 90% completion of the reaction. (log 10 = 1)

Draw the structures of major product(s) in each of the following reactions