Class 7 - Chemistry Set 3
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1. _______ are mixtures with non-uniform composition and have distinct boundaries of separation. *
1 point
2. Which of the following can undergo a chemical reaction ? *
1 point
3. Arrange the ompounds in sequence of increasing number of oxygen atoms.(a) Sugar(b) Plaster of paris(c) Starch (d) Glucose *
1 point
4. What is common name of sodium bicarbonate? *
1 point
5. Which acid is used in baking industry with NaHCO3 ? *
1 point
6. Stainless steel is an alloy of *
1 point
7. A rare and expensive fibre called cashmere is obtained from *
1 point
8. A change is a chemical change when it is accompanied by *
1 point
9. Deficiency of water, _____ plants growth *
1 point
10. Which of the following is correct about the indicator China rose? *
1 point
11. Which among the following is a pure substance? *
1 point
12. Which of the following is obtained as a byproduct in the manufacture of soap? *
1 point
13. Which of the following structure is related to sulphur molecule? *
1 point
14. From how many rivers Delhi gets its water supply? *
1 point
15. Which acid will be produced by bacteria in milk ? *
1 point
16. The water table of a place. *
1 point
17. The pH of pure water is *
1 point
18. Which of the following is used as antacid? *
1 point
19. Hydrogen gas and iron chloride are produced. *
1 point
20. The hair part of the sheep is called *
1 point
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