CBSE Class 10 Chemistry Worksheet - Acids, Bases And Salts (2)
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ACIDS, BASES AND SALTS
Q1 Why does the flow of acid rain water into a river make the survival of aquatic life
in the river difficult?
Q2 Why should water be never added dropwise to concentrated sulphuric acid?
Q3 Write balanced chemical equations for the reactions taking place when dry blue
crystals of copper sulphate are dropped into concentrated sulphuric acid.
Q4 What is the role of tartaric acid in baking powder?
Q5 There are two jars A and B containing food materials.Food in jar A is
pickled with acetic acid while B is not.Food of which jar will stale first?
Q6 If soil is acidic which compound would you spread to treat the soil?
Q7 Write two observations you make when quick lime is added to water.
Q8 A calcium compound which is yellow white powder is used as disinfectant and
also in textile industry.Name the compound. Which gas is released when this
compound is left exposed in air?
Q9 State the chemical property in each case on which
the following uses of baking soda are based
(i)As an antacid
(ii)As a constituent of baking powder
Q10 How is chlorine of lime is chemically different from calcium chloride?
Q11 Name the acids present in the following foodstuffs which attribute to a sour taste
(c)Vitamin C tablet
Q12 What does pH stand for? What does pH scale indicate?
Q13 Sweet toothmay lead to tooth decay. Explain,why? What is the role of tooth
paste in preventing cavities
Q14 Write the names of five hydrated salts with their colours and formulae.
Q15 How are bases different from alkalis? Are all bases alkalies?
Q16 What are strong acids and weak acids? Give two examples.
Q17 How will you test a gas which is liberated when hydrochloric acid reacts with an
Q18 Indicate with the help of a diagram the variation of pH with change in
concentration of hydrogen
ion and hydroxide ions showing
(i)Increase of acidic and basic nature.
(ii)Increase and decrease of H ion
Q19 W hat are indicators ? Give examples and their colour changes in different
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