Ncert Solutions Chemistry Class 12th

During the qualitative analysis of salt with cation y²⁺, addition of a reagent (X) to alkaline solution of the salt gives a bright red precipitate. The reagent (X) and the cation (y²⁺) present represent respectively are:

Which of the following chemical reaction represents Hall-Heroult process

Which of the following is not a broad spectrum antibiotic?

Which of the following is an example of polyester?

The major product of the above reactions is:

Which of the following is an example of conjugated diketone?

Two statement are given below:

Statement I : The melting point of monocarboxylic acid even number of carbon atoms is higher than that of with odd number of carbon atoms acid immediately below and above it in the series.

Statement II :  The solubility of monocarboxylic acids in water decreases with increases in molar mass.

Choose the most appropriate options

In the given reaction sequence, the major product 'C' is : :           

$C_8{H}_{10}\underset{H_{2}S{O}_4}{\overset{HN{O}_3}{\to }}A\underset{\Delta }{\overset{B{r}_2}{\to }}B\underset{KOH}{\overset{alcoholic}{\to }}C$

Given below are two statements :                                                       

Statement I : Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.

Statement II : For stabilization of an emulsion, excess of electrolyte is added. In the light of the above statements, choose the most appropriate answer from the options given below :