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Natural Science Quiz Questions and Answers for Competitive Exams

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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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