Question 1.
Where does the oxygen that keeps us alive come from?
A. Carbon dioxide
B. Carbonates absorbed from soil
C. Oxides of minerals
D. Water
Ans: D. Water
Question 2.
Which one of the following acids is used in battery ?
A. Hydrochloric acid
B. Hydrofluoric acid
C. Sulphuric acid
D. Sulphurous acid
Ans: C. Sulphuric acid
Question 3.
Sour taste of ‘Coca Cola’ is due to the presence of
A. Acetic acid
B. Phosphoric acid
C. Hydrochloric acid
D. Formic acid
Ans: B. Phosphoric acid
Question 4.
The substance most commonly used as a food preservative is
A. Sodium carbonate
B. Tartaric acid
C. Acetic acid
D. Sodium salt of benzoic acid
Ans: D. Sodium salt of benzoic acid
Question 5.
In chemical terms, what are alums used for purifying water for drinking purposes ?
A. Hydrated chlorides
B. Double nitrate
C. Double sulphates
D. Nitrates of aluminium
Ans: C. Double sulphates
Question 6.
Which of the following is the strongest base in aqueous solution ?
A. Diethylamine
B. Triethylamine
C. Ammonia
D. Ethylamine
Ans: A. Diethylamine
Question 7.
An acid having basicity one is
A. Sodium dihydrogen phosphate
B. Disodium hydrogen phosphate
C. Sodium phosphate
D. Phosphoric acid
Ans: B. Disodium hydrogen phosphate
Question 8.
Curd is sour due to presence of
A. Tartaric acid
B. Lactic acid
C. Acetic acid
D. Oxalic acid
Ans: B. Lactic acid
Question 9.
Brown stains in vessels and clothes indicate the presence of high quantities of __ in water.
A. Magnesium
B. Calcium
C. Manganese
D. None of these
Ans: D. None of these
Question 10.
Which of the following acids serves as an electrolyte in a lead storage battery?
A. Sulphuric acid
B. Lactic acid
C. Hydrochloric acid
D. Nitric acid
Ans: A. Sulphuric acid
Question 11.
The acid present in red ants is
A. Acetic acid
B. Butyric acid
C. Caproic acid
D. Formic acid
Ans: D. Formic acid
Question 12.
Drinking soda is
A. Alkaline
B. Acidic
C. Neutral
D. Oxidant
Ans: D. Oxidant
Question 13.
If water smells bad, then that odour can be removed by adding
A. Alum
B. Bleach
C. Activated carbon
D. Deactivated nitrogen
Ans: C. Activated carbon
Question 14.
Which is known as carbolic acid?
A. Phenol
B. Ethanol
C. Acetic acid
D. Oxalic acid
Ans: A. Phenol
Question 15.
Bee sting contains
A. An acidic liquid
B. A salt solution
C. An alkaline liquid
D. A corrosive liquid
Ans: A. An acidic liquid
Question 16.
Which of the following has pH value 7?
A. Pure Water
B. H2SO4
C. Sodium Carbonate
D. HCl
Ans: A. Pure Water
Question 17.
Surface water is a better source of drinking water because it is poor in
A. Dust
B. Bacteria
C. Arsenic
D. Algae
Ans: C. Arsenic
Question 18.
Citric acid is present in free form in
A. Tamarind
B. Milk
C. Apple
D. Lemon
Ans: D. Lemon
Question 19.
Sweat contains water and __
A. Citric acid
B. Lactic acid
C. Salt
D. Vinegar
Ans: C. Salt
Question 20.
Muscle fatigue is caused by the accumulation of :
A. Pyruvic acid
B. Lactic acid
C. Oxalacetic acid
D. Uric acid
Ans: B. Lactic acid
Chemistry GK MCQs all set
- Chemistry GK MCQs Set-1
- Chemistry GK MCQs Set-2
- Chemistry GK MCQs Set-3
- Chemistry GK MCQs Set-4
- Chemistry GK MCQs Set-5
- Chemistry GK MCQs Set-6
- Chemistry GK MCQs Set-7
- Chemistry GK MCQs Set-8
- Chemistry GK MCQs Set-9
- Chemistry GK MCQs Set-10
- Chemistry GK MCQs Set-11
- Chemistry GK MCQs Set-12
- Chemistry GK MCQs Set-13
- Chemistry GK MCQs Set-14
- Chemistry GK MCQs Set-15
- Chemistry GK MCQs Set-16
- Chemistry GK MCQs Set-17
- Chemistry GK MCQs Set-18
- Chemistry GK MCQs Set-19
- Chemistry GK MCQs Set-20
- Chemistry GK MCQs Set-21
- Chemistry GK MCQs Set-22
- Chemistry GK MCQs Set-23
- Chemistry GK MCQs Set-24
- Chemistry GK MCQs Set-25
- Chemistry GK MCQs Set-26
- Chemistry GK MCQs Set-27
- Chemistry GK MCQs Set-28
- Chemistry GK MCQs Set-29
- Chemistry GK MCQs Set-30
- Chemistry GK MCQs Set-31
- Chemistry GK MCQs Set-32
- Chemistry GK MCQs Set-33
- Chemistry GK MCQs Set-34
- Chemistry GK MCQs Set-35
- Chemistry GK MCQs Set-36
- Chemistry GK MCQs Set-37
- Chemistry GK MCQs Set-38
- Chemistry GK MCQs Set-39
- Chemistry GK MCQs Set-40
- Chemistry GK MCQs Set-41
- Chemistry GK MCQs Set-42
- Chemistry GK MCQs Set-43
- Chemistry GK MCQs Set-44
- Chemistry GK MCQs Set-45
- Chemistry GK MCQs Set-46
- Chemistry GK MCQs Set-47
- Chemistry GK MCQs Set-48
- Chemistry GK MCQs Set-49
- Chemistry GK MCQs Set-50
- Chemistry GK MCQs Set-51
- Chemistry GK MCQs Set-52
- Chemistry GK MCQs Set-53
- Chemistry GK MCQs Set-54
- Chemistry GK MCQs Set-55
- Chemistry GK MCQs Set-56
- Chemistry GK MCQs Set-57
- Chemistry GK MCQs Set-58
- Chemistry GK MCQs Set-59
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