Class 12th

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:

Which of the following reactions will yield benzaldehyde as a product?

The major product of the following reaction is:

'A' and 'B' respectively are:

$A\underset{\left(2\right)Zn-H_{2}O}{\overset{\left(1\right)O_3}{\to }}$ Ethane-1, 2- dicarbaldehyde + Glyoxal / Oxaldehyde

$B\underset{\left(2\right)Zn-H_{2}O}{\overset{\left(1\right)O_3}{\to }}$ 5- oxohexanal

Which of the following will have maximum stabilization due to crystal field?