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Question 1 of 29
1. Question
Assertion: Universal indicator gives green colour with distilled water.
Reason: pH of distilled water is 7 and it is neutral and universal indicator gives green colour with neutral solution.CorrectIncorrect -
Question 2 of 29
2. Question
NaHCO, formed by reaction of
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Question 3 of 29
3. Question
Calcium phosphate is present in tooth enamel. Its nature is
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Question 4 of 29
4. Question
An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?
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Question 5 of 29
5. Question
Egg shell is made up of
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Question 6 of 29
6. Question
Which of the following is not a acidic salt?
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Question 7 of 29
7. Question
Which one of the following types of medicines is used for treating indigestion?
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Question 8 of 29
8. Question
Sodium hydroxide turns phenolphthalein solution
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Question 9 of 29
9. Question
Sodium hydroxide is a
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Question 10 of 29
10. Question
Rain is called acid rain when its:
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Question 11 of 29
11. Question
Tooth enamel is made up of
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Question 12 of 29
12. Question
What is the pH range of human body?
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Question 13 of 29
13. Question
A drop of liquid sample was put on the pH paper, paper turned blue. The liquid sample must be of
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Question 14 of 29
14. Question
Lime water reacts with chlorine to give
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Question 15 of 29
15. Question
At what temperature is gypsum heated to form Plaster of Paris?
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Question 16 of 29
16. Question
Na2CO3 . 10H2O is
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Question 17 of 29
17. Question
Sodium carbonate is a basic salt because it is a salt of a
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Question 18 of 29
18. Question
Tomato is a natural source of which acid?
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Question 19 of 29
19. Question
Brine is an
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Question 20 of 29
20. Question
What is formed when zinc reacts with sodium hydroxide?
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Question 21 of 29
21. Question
When hydrogen chloride gas is prepared on a humid day, the gas is usually passed through the guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube is to
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Question 22 of 29
22. Question
Plaster of Paris is made from
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Question 23 of 29
23. Question
Assertion: Bleaching power liberate chlorine when kept in atmosphere.
Reason: CaOCl2 reacts with CO2 present in atmosphere to form CaCO3 and chlorine gas.CorrectIncorrect -
Question 24 of 29
24. Question
Assertion: Ammonium hydroxide is Weak Base
Reason: Phenolphthalein becomes pink in NH2OHCorrectIncorrect -
Question 25 of 29
25. Question
Ag2S reacts with H2SO4 to form
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Question 26 of 29
26. Question
A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish-blue?
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Question 27 of 29
27. Question
Which of the following salts does not contain water of crystallisation?
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Question 28 of 29
28. Question
How many water molecules does hydrated calcium sulphate contain?
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Question 29 of 29
29. Question
10 mL of a solution of NaOH is found to be completely neutralized by 8 mL of a given solution of HCl. If we take 20 mL of same solution of NaOH, the amount of HCl solution required to neutralize it will be
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