MULTIPLE CHOICE QUESTIONS (MCQ’s)1

Before burning in air, the magnesium ribbon is cleaned by rubbing with a sand paper to:

The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy, is a kind of:

In a chemical reaction between Sulphuric acid and Barium chloride solution the white precipitate formed are of:

A chemical reaction does not involve:

 One of the following processes does not involve a chemical reaction. That is:

It is necessary to balance a chemical equation in order to satisfy the law of:

The displacement reaction between iron (III) oxide and a metal X is used for welding the rail tracks. Here X is

Rusting of iron involves a chemical reaction which is a combination of:

You are given the following chemical reaction:
[https://ankitgoa.com/wp-content/uploads/2020/08/eq9.png]
This reaction represents:

When ferrous sulphate is heated strongly it undergoes decomposition to form Ferric oxide as a main product accompanied by a change in colour from:

Which of the following gases is used in the storage of fat and oil containing foods for a long time?

Following is given a diagram showing an experimental set-up: 

 [https://ankitgoa.com/wp-content/uploads/2020/08/eq10.png]

The given set-up is used to carry out:

All the methods mentioned below can be used to prevent the food from getting rancid except:

 i. Storing the food in the air-tight containers
 ii. Storing the food in refrigerator
 iii. Keeping the food in clean and covered containers
 iv. Always touching the food with clean hands

The neutralization reaction between an acid and a base is a type of:

The chemical reaction between Hydrogen sulphide and Iodine to give Hydrogen iodide and Sulphur is given below:
H₂S + I₂    → 2HI + S
The reducing and oxidizing agents involved in this redox reaction are: