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Subjects
Science State Board
Class 8
Changes around us
Textbook questions
2.
Choose the best answer II
Exercise condition:
3
m.
1.
Brine is a concentrated solution of __________.
sodium sulphate
calcium chloride
sodium chloride
sodium bromide
2.
Limestone contains _________ mainly.
calcium nitrate
calcium chloride
calcium carbonate
calcium sulphate
3.
Which of the following factor induces electrtolysis?
Electricity
Catalysis
Heat
Light
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