Ncert Solutions Chemistry Class 12th

The charges on the colloidal CdS sol and TiO? sol are, respectively:

The INCORRECT statements below regarding colloidal solutions is:

Main products formed during a reaction of 1-methoxy naphthalene with hydroiodic acid are:

Ammonolysis of Alkyl halides followed by the treatment with NaOH solution can be used to prepare primary, secondary and tertiary amines. The purpose of NaOH in the reaction is:

Match List – I with List – II:
| List – I | List – II |
| :--- | :--- |
| (a) Mercury | (i) Vapour phase refining |
| (b) Copper | (ii) Distillation Refining |
| (c) Silicon | (iii) Electrolytic Refining |
| (d) Nickel | (iv) Zone Refining

Choose the most appropriate answer from the option given below:

Consider the above reaction, the product 'X' and 'Y' respectively are:

Consider the given reaction, percentage yield of

In the reaction of hypobromite with amide, the carbonyl carbon is lost as:

Match List – I with List – II:
| List – I (Class of Chemicals) | List – II (Example) |
| :--- | :--- |
| (a) Antifertility drug | (i) Meprobamate |
| (b) Antibiotic | (ii) Alitame |
| (c) Tranquilizer | (iii) Norethindrone |
| (d) Artificial Sweetener | (iv) Salvarsan |

Choose the most appropriate match:

Given below are two statements:
Statement I: Non-biodegradable wastes are generated by the thermal power plants.
Statement II: Bio-degradable detergents leads to eutrophication.
In the light of the above statements, choose the most appropriate answer from the options given below: