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CBSE Class 7 Chemistry Acids, Bases & Salts (Hard)
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Question 1 of 10
1. Question
An oxide is acidic and has a pungent odour. It could be
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Question 2 of 10
2. Question
Out of these gases which one is used in fire extinguishers
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Question 3 of 10
3. Question
The correct way of making a solution of acid in water is to
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Question 4 of 10
4. Question
Products of a neutralisation reaction are always:
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Question 5 of 10
5. Question
Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed.
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Question 6 of 10
6. Question
On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution?
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Question 7 of 10
7. Question
Give the chemical name of Window cleaner
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Question 8 of 10
8. Question
Phenolphthalein gives ___________colour in acid medium
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Question 9 of 10
9. Question
The sting of an ant contains__________
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Question 10 of 10
10. Question
The effect of sting of an ant can be neutralised by rubbing with
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