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Worksheetsacid base and salt
Total questions: 15
Worksheet time: 8mins
Lime water reacts with chlorine to give
bleaching powder
baking powder
baking soda
washing soda
The apparatus given in the adjoining figure was set up to demonstrate electrical conductivity.
Which of the following statement(s) is (are) correct?
(i) Bulb will not glow because electrolyte is not acidic.
(ii) Bulb will glow because HCl is a strong acid and furnishes ions for conduction.
(iii) Bulb will not glow because the circuit is incomplete.
(iv) Bulb will not glow because it depends upon the type of electrolytic solution.
(i) and (iii)
(ii) and (iv)
(ii) only
(iv) only
Which of the following statements is correct about an aqueous solution of an acid and of a base?
(i) Higher the pH, stronger the acid
(ii) Higher the pH, weaker the acid
(in) Lower the pH, stronger the base
(iv) Lower the pH, weaker the base
(i) and (iii)
(ii) and (iii)
(i) and (iv)
(ii) and (iv)
Alkalis are
acids, which are soluble in water
acids, which are insoluble in water
bases, which are insoluble in water
bases, which are soluble in water
Sodium carbonate is a basic salt because it is a salt of a
strong acid and strong base
weak acid and weak base
strong acid and weak base
weak acid and strong base
How many water molecules does hydrated cal-cium sulphate contain?
5
10
7
2
At what temperature is gypsum heated to form Plaster of Paris?
90°C
100°C
110°C
120°C
Na2CO3. 10H2O is
washing soda
baking soda
bleaching powder
tartaric acid
Brine is an
an aqueous solution of sodium hydroxide
an aqueous solution of sodium carbonate
an aqueous solution of sodium chloride
an aqueous solution of sodium bicarbonate
What is formed when zinc reacts with sodium hydroxide?
Zinc hydroxide and sodium
Sodium zincate and hydrogen gas
Sodium zinc-oxide and hydrogen gas
Sodium zincate and water
Tomato is a natural source of which acid?
Acetic acid
Citric acid
Tartaric acid
Oxalic acid
In terms of acidic strength, which one of the following is in the correct increasing order?
Water < Acetic acid < Hydrochloric acid
Water < Hydrochloric acid < Acetic acid
Acetic acid < Water < Hydrochloric acid
Hydrochloric acid < Water < Acetic acid
Which one of the following salts do not contain water of crystallisation?
Blue vitriol
Baking soda
Washing soda
Gypsum
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
absorb the evolved gas
moisten the gas
absorb moisture from the gas
absorb Cl– ions from the evolved gas
What happens when a solution of an acid is mixed with a solution of a base in a test tube?
(i) Temperature of the solution decreases
(ii) Temperature of the solution increases
(in) Temperature of the solution remains the same
(iv) Salt formation takes place
(i) and (iv)
(i) and (iii)
(ii) only
(ii) and (iv)
