Question

Rathor
BSN ACADEMY SR. SEC. SCHO
DPP SHEET-02
CLASS - X
CHEMISTRY
Q.1 State the type of chemical reactions with chemical equations that take place in the follow
0 Magnesium wire is burnt in air (ii) Electric current is passed through water. (iii) Ammonia
0.2 Why does dry HCl gas not change the color of dry litmus paper?
Q.3 Write an equation to show the reaction between plaster of Paris and water.
Q.4 Fresh milk has a pH of 6. How do you think the pH will changes as it turns into curd? Exp
Q.5 What happens when nitric acid is added to egg shell?
Q.6 How would you distinguish between baking powder and washing soda by heating?
Q.7 What is meant by water of crystallization? How would you show that copper sulphate
Q.8 Write the chemical formula of bleaching powder. How bleaching powder is prepared?
PHYSICS-​

Answer 1

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