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Free download in PDF Acids Bases and Salts Short 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.
41
Which of the following is usually taken to counter constipation?
[A]
Hydrochloric acid
[B]
Milk of magnesia
[C]
Ascorbic acid
[D]
None of the above
42
Tooth enamel is made up of which of the following?
[A]
Potassium carbonate
[B]
Calcium carbonate
[C]
Calcium phosphate
[D]
None of the above
Answer: Calcium phosphate
43
A metal compound reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. If one of the compounds formed is calcium chloride. Then, what’s the name of the metal compound?
[A]
Calcium carbonate
[B]
Calcium chloride
[C]
Calcium hydroxide
[D]
None of the above
Answer: Calcium carbonate
44
While mixing a strong concentrated acid/base, we must take care of which of the following?
1. The acid/base must always be added slowly to water rather than the other way around.
2. We must stir the solution slowly and constantly.
3. Protective goggles, gloves, and a lab coat should be worn.
4. The water must always be added to the acid/base rather than the other way around.
[A]
Only 1 and 3 are correct
[B]
Only 1, 2 and 3 are correct
[C]
Only 2, 3 and 4 are correct
[D]
None of the above
Answer: Only 1, 2 and 3 are correct
45
Which gas is usually liberated when an acid reacts with a metal?
[A]
Hydrogen
[B]
Oxygen
[C]
Nitrogen
[D]
All the above
46
Copper chloride is a light brown solid, which slowly absorbs moisture to form a
[A]
Orange dihydrate
[B]
Red dihydrate
[C]
Blue-green dihydrate
[D]
Blue dihydrate
Answer: Blue-green dihydrate
47
Hydrogen burns with a pop sound in the presence of
[A]
Nitrogen
[B]
Oxygen
[C]
Sulphur dioxide
[D]
Argon
48
Metal oxides are also called
[A]
Basic oxides
[B]
Acidic Oxides
[C]
Neutral Oxides
[D]
None of the above
49
Which of the following do not conduct electricity?
1. Ethyl alcohol
2. Glucose
3. Water
[A]
Only 1
[B]
Only 3
[C]
Both 1 and 2
[D]
All 1, 2 and 3
50
Common salt besides being used in kitchen can also be used as the raw material for making
i. soda
ii. bleaching powder
iii. baking soda
iv. slaked lime
[A]
(i) and (ii)
[B]
(i), (ii) and (iv)
[C]
(i) and (iii)
[D]
(i), (iii) and (iv)
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