Class 12th

The correct order of energy of absorption for the following metal complexes is

A : ${\left[Ni{\left(en\right)}_3\right]}^{2+}$ , B : ${\left[Ni{\left(N{H}_3\right)}_6\right]}^{2+}$ , C : ${\left[Ni{\left(H_{2}O\right)}_6\right]}^{2+}$

Given below are two statements.

Statement I: Pig iron is obtained by heating cast iron with scrap iron.

Statement II: Pig iron has a relatively lower carbon content than that of cast iron. In the light of the above statements, choose the correct answer form the options given below.

For micelle formation, which of the following statements are correct?

A. Micelle formation is an exothermic process.

B. Micelle formation is an endothermic process.

C. The entropy change is positive.

D. The entropy change is negative.

The molar conductivity of a conductivity cell filled with 10 moles of 20 mL NaCl solution is

Two solutions A and B are prepared by dissolving 1g of no-volatile solutes X and Y respectively in 1 kg of water. The ratio of depression in freezing point for A and B is found to be 1 : 4. The ratio of molar masses of X and Y is

Match the List-I with List-II

Choose the correct answer from the options given below:

L- isomer of a compound 'A' (C₄H₈O₄) gives a positive test with ${\left[Ag{\left(N{H}_3\right)}_2\right]}^{+}$ . Treatment of 'A' with acetic anhydride yields triacetate derivative. Compound 'A' produces an optically active compound (B) and an optically inactive compound (C) on treatment with bromine water and HNO₃ respectively. Compound (A) is:

Given below two statements:

Statement- I : In Hofmann degradation reaction, the migration of only an alkyl group takes place from carbonyl carbon of the amide to the nitrogen atom.

Statement- II : The group is migrated in Hofmann degradation reaction to electron deficient atom.

In the light of the above statement, choose the most appropriate answer from the options given below: