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Free download in PDF Acids Bases and Salts Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(1)
Which is known as carbolic acid?
[A]
Phenol
[B]
Ethanol
[C]
Acetic acid
[D]
Oxalic acid
(2)
Name an element which is common to all acids?
[A]
Sulphur
[B]
Chlorine
[C]
Nitrogen
[D]
Hydrogen
(3)
On a pH scale, we can measure pH from
[A]
0-7
[B]
7-14
[C]
0-14
[D]
None of the above
(4)
What happens when an acid reacts with metal oxide?
[A]
Salt and water is formed
[B]
Metal hydride is formed
[C]
Oxyacid will be formed
[D]
None of the above
Answer: Salt and water is formed
(5)
Which statement is correct regarding acids?
I. Acid is a molecule which donates a proton or accepts electron pair in reactions.
II. Acid increases the concentration of hydrogen atoms or hydronium atoms in water.
III. Acids have a pH value of less than 7.
IV. The acid in the stomach helps in the digestion of food.
[A]
Only I
[B]
Both II and IV
[C]
I, III and IV
[D]
All the above
(6)
Which of the following is a battery acid?
[A]
Sulphuric acid diluted with water
[B]
Carboxylic acid mixed with water
[C]
Concentrated hydrochloric acid
[D]
Concentrated sulphuric acid
Answer: Sulphuric acid diluted with water
(7)
Red litmus paper turns into which colour in basic/alkaline conditions?
[A]
Violet colour
[B]
Red colour
[C]
Blue colour
[D]
No change
(8)
Which acid is present in sour milk?
[A]
Ascorbic acid
[B]
Ethanoic acid
[C]
Tartaric acid
[D]
Lactic acid
(9)
Which of the following is present in Bee sting?
[A]
Tartaric acid
[B]
Methanoic acid
[C]
Citric acid
[D]
All of the above
(10)
Which of the following is true about Alkalis?
[A]
Bases which are soluble in water are called alkalis
[B]
Bases which are soluble in acids are called alkalis
[C]
Bases which are soluble in other bases are called alkalis
[D]
Bases which are harsh to touch, sour in taste are called alkalis
Answer: Bases which are soluble in water are called alkalis
(11)
NaCl (common salt) which we use in food is
[A]
Neutral
[B]
Acidic
[C]
Basic
[D]
All of the above
(12)
The chemical formula of Gypsum is
[A]
CaSO4.2H2O
[B]
CuSO4.5H2O
[C]
CoCl4.6H2O
[D]
SnCl2.2H2O
(13)
The water of crystallisation is the fixed number of
[A]
water molecules present in one formula unit of a salt
[B]
sodium molecules present in one mass unit of a salt
[C]
water molecules present in one mass unit of a salt
[D]
sodium molecules present in one formula unit of a salt
Answer: water molecules present in one formula unit of a salt
(14)
Why is calcium sulphate hemihydrates called Plaster of Paris?
[A]
Because it is found only in Paris
[B]
Because of its colour which is quite similar to that of Paris
[C]
Because of its large deposits in the Paris
[D]
Because its first usage began in Paris
Answer: Because of its large deposits in the Paris
(15)
Name the substance which on treatment with chlorine yields bleaching powder.
[A]
Calcium hydroxide
[B]
Calcium carbonate
[C]
Calcium oxide
[D]
Calcium chloride
Answer: Calcium hydroxide
(16)
A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains
[A]
NaCl
[B]
HCl
[C]
LiCl
[D]
KCl
(17)
Which one of the following types of medicines are used for treating indigestion?
[A]
Antibiotic
[B]
Analgesic
[C]
Antacid
[D]
Antiseptic
(18)
In the presence of normal acids, Phenolphthalein colour remains
[A]
Pink
[B]
Colourless
[C]
Orange
[D]
None of the above
(19)
Ant sting produces
[A]
Acetic acid
[B]
Methanoic acid
[C]
Oxalic acid
[D]
Butanoic acid
(20)
Which of the following is acidic in nature?
[A]
Lime juice
[B]
Human blood
[C]
Lime water
[D]
Antacid
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