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WorksheetsTopic 4 - Acids and Bases
Total questions: 16
Worksheet time: 32mins
A mixture of NH4Cl(aq) and ZnCl2(aq) is heated with excess NaOH(aq). Which of the following observations is correct?
No pungent (刺激的） gas is evolved and no precipitate is formed.
No pungent (刺激的） gas is evolved but a white precipitate is formed.
A pungent (刺激的）gas is evolved but no precipitate is formed.
A pungent (刺激的） gas is evolved and a white precipitate is formed.
Which of the following statements about dilute hydrochloric acid is INCORRECT？
It is made by dissolving hydrogen chloride gas in water.
It reacts with silver nitrate solution to give a white precipitate.
It is used in car batteries.
“CORROSIVE” label should be displayed on a bottle of dilute hydrochloric acid.
Which of the following substances are acidic?
(1) Window cleanser (2) Gastric juice胃酸 (3) Soft drink
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
Solid X reacts with dilute sulphuric acid. Water is NOT produced in the reaction. What might X be?
Zinc hydroxide
Magnesium oxide
Potassium carbonate
Calcium chloride
A
B
C
D
A
B
C
D
Which of the following experiments would produce a gas which turns limewater milky?
Mixing magnesium carbonate with dilute hydrochloric acid
Heating magnesium oxide with carbon
Mixing zinc oxide with dilute nitric acid
Mixing zinc oxide with carbon
Which of the following substances can react with dilute sulphuric acid?
(1) Barium hydroxide
(2) Nickel (II) oxide
(3) Zinc carbonate
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
Which of the following acids is a tribasic acid?
Carbonic acid
Nitric acid
Phosphoric acid
Sulphurous acid
A
B
C
D
Which of the following pairs of ions will give a coloured precipitate when mixed?
Ca2+(aq) + CO32–(aq)
Cu2+(aq) + NO3–(aq)
Ni2+(aq) + OH–(aq)
NH4+(aq) + SO42–(aq)
