
10 (a) Acid, Base
Authored by nur nani
Chemistry
1st - 11th Grade

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33 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
An element X forms an oxide which dissolves both in acids and in alkalis.
What could X be?
aluminium
calcium
copper
iron
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which representation of dilute sulfuric acid is correct?
H2(aq) + SO42-(aq)
2H+(aq) + SO42-(aq)
2H+(aq) + SO4-(aq)
H2SO4(ℓ)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which one of the following elements burns in air to form an oxide which, when shaken with water, gives a solution with a pH greater than 7?
carbon
copper
hydrogen
magnesium
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An element is burned in an excess of oxygen. Which statement about the oxide formed is always correct?
It is crytalline solid.
It is greater in mass than the element.
It is soluble in water.
It is white in colour.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which reaction is dilute sulfuric acid not be having as an acid?
H2SO4 + 2NaOH → Na2SO4 +2H2O
H2SO4 + BaCI2 → BaSO4 + 2HCI
H2SO4 + CuO → CuSO4 + H2O
H2SO4 + Mg → MgSO4 + H2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which substance does not produce copper(II) sulfate when added to dilute sulfuric acid?
copper
copper(II) carbonate
copper(II) hydroxide
copper(II) oxide
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a reaction of dilute hydrochloric acid?
Ammonium chloride reacts to give ammonia.
Calcium carbonate reacts to give carbon dioxide
Copper reacts to give hydrogen.
Universal Indicator paper turns blue.
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