List of practice Questions

Write the structures of A, B, and C in the following reactions:
structures of A, B, and C
Write the reaction involved in the following: Wolff-Kishner reduction
(b) Decarboxylation reaction
(c) Cannizzaro reaction
Assertion (A): Uracil base is present in DNA. Reason (R): DNA undergoes self-replication.
Assertion (A): Diazonium salts of aromatic amines are more stable than those of aliphatic amines. Reason (R): Diazonium salts of aliphatic amines show resonance.
Assertion (A): p-Nitroaniline is a weaker base than p-toluidine. Reason (R): The electron-withdrawing effect of \(-NO_2\) group in p-nitroaniline makes it a weaker base.
A first-order reaction has a rate constant \( 1.25 \times 10^{-3} \, s^{-1} \). How long will 5 g of this reactant take to reduce to 2.5 g?
$[ log 2 = 0·301, log 3 = 0·4771, log 4 = 0·6021 ]$
What is lanthanoid contraction? Actinoid contraction is greater from element to element than lanthanoid contraction. Why?
Ethanol on heating with conc. H\(_2\)SO\(_4\) at 413 K gives:
An azeotropic solution of two liquids has a boiling point lower than either of them when it:
The relative lowering of vapor pressure of an aqueous solution containing a non-volatile solute is 0.0225. The mole fraction of the non-volatile solute is:
During electrolysis of an aqueous solution of NaCl:
The addition of a catalyst during a chemical reaction alters which of the following quantities of the reaction?
For the elementary reaction \( P \to Q \), the rate of disappearance of ‘P’ increases by a factor of 8 upon doubling the concentration of ‘P’. The order of the reaction with respect to ‘P’ is:
Assertion (A): Aliphatic primary amines can be prepared by Gabriel phthalimide synthesis. Reason (R): Alkyl halides undergo nucleophilic substitution with anion formed by phthalimide.
Ligand EDTA\(^{4-}\) is an example of a:
Which of the following ligands forms a chelate complex?
Which of the following contains sp\(^2\) hybridized carbon bonded to X?
Which of the following is most acidic?
Anisole reacts with HI to give:
When MnO\(_2\) is fused with KOH in air, it gives:
For an electrolyte undergoing association in a solvent, the van’t Hoff factor:
Acetic acid reacts with PCl5to give:
The formation of cyanohydrin from an aldehyde is an example of:
In the Arrhenius equation, when log k is plotted against 1/T, a straight line is obtained whose:
The reaction of an alkyl halide with sodium alkoxide forming ether is known as: