CBSE 12 Chemistry Question Paper-2024 Set-2

When $MnO_{2}$ is fused with KOH in the presence of air, it gives:

Ligand $EDTA^{4-}$ is an example of a:

Which one of the following is a non-reducing sugar?

Which of the following would be an incorrect representation for a cell at 298 K?

The rate constant of a first order reaction is $5.0 imes 10⁻⁵ s⁻¹$. The time required for the initial concentration of the reactant to fall to 1/2 of its value is:

The compound which undergoes Cannizzaro's reaction is:

The product formed as a result of the reaction of an acyl chloride with dialkyl cadmium is:

Which one of the following is an artificial sweetener?

Which of the following pairs is that of isoelectronic species?

What type of isomerism is shown by the complex $[Co(NH_{3}){5}SO{4}]Cl$?

Which of the following will react most readily with $AgNO_{3}$ to form a precipitate?

Which of the following alkyl halides undergoes $S_N2$ reaction most readily?

A solution of urea in water has a boiling point of 100.18 °C. The freezing point of this solution will be (Given: $K_b$ for water = 0.512 K kg $mol⁻¹$ and $K_f$ for water = 1.86 K kg $mol⁻¹$):

The molar conductivity of a $0.05 M$ aqueous solution of NaCl is 108.6 S $cm² mol⁻¹$ and its conductivity is:

Aniline reacts with chloroform and alcoholic KOH to produce:

Which of the following cannot be prepared by Gabriel phthalimide synthesis?

Assertion (A): On heating a crystal of NaCl with sodium vapours, a yellow colour is imparted. Reason (R): The yellow colour is due to the formation of Schottky defects.

Assertion (A): A solution of sucrose in water is dextrorotatory but on hydrolysis, the specific rotation becomes laevorotatory. Reason (R): Hydrolysis of sucrose yields an equimolar mixture of D-glucose and D-fructose. The laevorotation of D-fructose is more than the dextrorotation of D-glucose.

Assertion (A): In an electrochemical cell, the anode is the negative electrode. Reason (R): Electrons flow from anode to cathode in an electrochemical cell.

Assertion (A): Aromatic aldehydes and ketones having at least one α-hydrogen atom undergo Cannizzaro's reaction. Reason (R): The aldehydes and ketones which undergo Cannizzaro's reaction are those which do not have an α-hydrogen atom.

The correct order of increasing oxidizing power for the 3d transition elements is:

The type of isomerism shown by the complex $[Co(Cl){2}(en){2}]^{+}$ is:

What type of cell is the Leclanche cell?

The major product formed in the reaction of 2-bromopentane with ethanolic KOH is:

Which of the following does not give a positive Fehling's test?

How many unit cells are there in 5.85 g of NaCl?

The number of octahedral voids in a cubic close packed (ccp) structure is:

On heating a crystal of NaCl with sodium vapours, a yellow colour is imparted. The yellow colour is due to the formation of:

Which of the following would be an incorrect representation for a cell at 298 K?