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- 1. Multiple Choice
A solution turns red litmus blue ,its pH is likely to be -
1
4
5
10
- 2. Multiple Choice
A solution reacts with crushed egg shells to give a gas that turns lime -water milky.
NaCl
HCl
LiCl
KCl
- 3. Multiple Choice
Which one of the following types of medicines is used for treating indigestion?
Antibiotic
Analgesic
Antacid
Antiseptic
- 4. Multiple Choice
Calcium phosphate is present in tooth enamel. Its nature is-
basic
acidic
neutral
amphoteric
- 5. Multiple Choice
which of the following salts does not contain water of crystallisation?
Blue vitriol
Baking soda
Washing soda
Gypsum
- 6. Multiple Choice
Which one of the following can be used as an acid -base indicator by a visually impared student?
Litmus
Turmeric
Vanilla essence
Petunia leaves
- 7. Multiple Choice
Which of the following is acidic in nature?
Lime Juice
Human blood
Lime water
Antacid
- 8. Multiple Choice
Which of the following is not a mineral acid?
Hydrochloric acid
Citric acid
Sulphuric acid
Nitric acid
- 9. Multiple Choice
Plaster of Paris is obtained by heating:
Gypsum
Limestone
Sodium chloride
Acetic acid
- 10. Multiple Choice
Metal hydrogen carbonates react with acids to give
salt ,water , chlorine
salt , water and carbon di oxide
salt and carbon di oxide
salt , hydrogen and carbon dioxide
- 11. Multiple Choice
which of the following is used for dissolution of gold?
Hydrochloric acid
Sulphuric acid
Nitric acid
Aqua regia
- 12. Multiple Choice
The pH of the gastric juices released during digestion is -
less than 7
more than 7
equal to 7
equal to 0
- 13. Multiple Choice
The acid obtained from curd is -
Oxalic acid
Tartaric acid
Acetic acid
Lactic acid
- 14. Multiple Choice
The pH of a solution is 3 .When its pH changes to 5,then H+ ion concentration -
increases two times
decreases two times
increases 100 times
decreases 100 times
- 15. Multiple Choice
Which of the aqueous solutions has highest pH value?
Sodium chloride
Potassium carbonate
Copper sulphate
Ammonium chloride
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