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Question 1 of 15
1. Question
Before burning in air, the magnesium ribbon is cleaned by rubbing with a sand paper to:
CorrectIncorrect -
Question 2 of 15
2. Question
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:
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Question 3 of 15
3. Question
In a chemical reaction between Sulphuric acid and Barium chloride solution the white precipitate formed are of:
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Question 4 of 15
4. Question
A chemical reaction does not involve:
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Question 5 of 15
5. Question
One of the following processes does not involve a chemical reaction. That is:
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Question 6 of 15
6. Question
It is necessary to balance a chemical equation in order to satisfy the law of:
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Question 7 of 15
7. Question
The displacement reaction between iron (III) oxide and a metal X is used for welding the rail tracks. Here X is
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Question 8 of 15
8. Question
Rusting of iron involves a chemical reaction which is a combination of:
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Question 9 of 15
9. Question
You are given the following chemical reaction:
This reaction represents:CorrectIncorrect -
Question 10 of 15
10. Question
When ferrous sulphate is heated strongly it undergoes decomposition to form Ferric oxide as a main product accompanied by a change in colour from:
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Question 11 of 15
11. Question
Which of the following gases is used in the storage of fat and oil containing foods for a long time?
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Question 12 of 15
12. Question
Following is given a diagram showing an experimental set-up:
The given set-up is used to carry out:
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Question 13 of 15
13. Question
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 handsCorrectIncorrect -
Question 14 of 15
14. Question
The neutralization reaction between an acid and a base is a type of:
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Question 15 of 15
15. Question
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:CorrectIncorrect