Ncert Solutions Chemistry Class 12th

A reaction of benzonitrile with one equivalent CH?MgBr followed by hydrolysis produces a yellow liquid "P". The compound "P" will give positive

Which one of the following compounds will give orange precipitate when treated with 2,4-Dinitrophenyl hydrazine?

What is the major product "P" of the following reaction?

Given below are two statements, one is labelled as Assertion (A) and other is labelled as Reason (R).
Assertion (A): Gabriel phthalimide synthesis cannot be used to prepare aromatic primary amines.
Reason (R): Aryl halides do not undergo nucleophilic substitution reaction.
In the light of the above statements, choose the correct answer from the options given below:

Consider the given reaction, the product 'X' is

Consider the above reaction, the product "P" is:

Match List – I with List – II:
| List - I | List - II |
| (a) Concentration of Ag ore | (i) Reverberatory furnace |
| (b) Blast furnace                    | (ii) Pig iron |
| (c) Blister copper                   | (iii) Leaching with dilute NaCN solution |
| (d) Froth floatation method | (iv) Sulfide ores |
Choose the correct answer from the options given below:

A biodegradable polyamide can be made from:

[where Et → C?H?, t-Bu ⇒ (CH?)?C-]

Consider the above reaction sequence, product "A" and product "B" formed respectively are:

Match List – I with List – II:
| List - I (Example of Colloids) | List - II (Classification) |
| (a) Cheese            | (i) dispersion of liquid in liquid |
| (b) Pumice stone | (ii) dispersion of liquid in gas |
| (c) Hair cream      | (iii) dispersion of gas in solid |
| (d) Cloud              | (iv) dispersion of liquid in solid |
Choose the most appropriate answer from the option given below: