Natural Science Quiz Questions and Answers for Competitive Exams
General Science Questions and Answers: 2020
17. What is sodium chloride?
(A) Table salt
(B) table Sugar
(C) Coffee
(D) Normal Salt
Ans . A
18 What is table sugar?
(A) Cane sugar (Sucrose)
(B) Glucose
(C) Fructose
(D) Sweets
Ans . A
19. What is the element present on lead pencils?
(A) Carbon (graphite)
(B) Iron
(C) copper
(D) Tustin
Ans . A
20. Which gas is found in soda water?
(A) Carbon dioxide
(B) Hydrogen
(C) Carbon-di-oxide
(D) Helium
Ans . A
21. What is the solvent of gold?
(A) Aqua Regia
(B) Polysulphide solution
(C) Platinum gold
(D) Liquid gold
Ans . A
22. Name the chemical assed to make tooth pastes white?
(A) Titanium dioxide
(B) Hydrogen
(C) Carbon-di-oxide
(D) Helium
Ans . A
23. Which chemical is the reason behind the brown colour of human faces?
(A) Bilirubin
(B) Sodium Nitrate
(C) Methane
(D) Athens
Ans . A
24. Which chemical is called Chile Salt peter?
(A) Sodium Nitrate
(B) Hydrogen
(C) Carbon-di-oxide
(D) Helium
Ans . A[/correctAnswer
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