Top 500 GK Questions 2023-24

General Knowledge

Q.461 pH of blood is

A. 4
 B. 6.4
 C. 7.4
 D. 8

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Q.462 Natural rubber is a polymer derived from

A. isoprene
 B. ethylene
 C. propylene
 D. butadiene

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Q.463 First atomic theory was proposed by

A. John Dalton
 B. E.Rutherford
 C. De Broglie
 D. D.I.Mendeleef

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Q.464 Which substance is obtained by the hydrolysis of oil?

A. ethanol
 B. glycol
 C. acetic acid
 D. glycerol

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Q.465 Washing soda is

A. sodium sulphite
 B. sodium bicarbonate
 C. sodiun carbonate
 D. sodium biosulphite

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Q.466 Air contains maximum amount of

A. oxygen
 B. nitrogen
 C. hydrogen
 D. carbon dioxide

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Q.467 Human bone does not contain

A. calcium
 B. carbon
 C. oxygen
 D. phosphorous

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Q.468 Homo nuclear molecules contain

A. polar bond
 B. covalent bond
 C. ionic bond
 D. coordinate bond

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Q.469 Which one of the following metals is the best conductor of electricity?

(A) iron

(B) copper

(C) silver

(D) aluminium

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Q.470 Which of the following is the lightest metal?

(A) mercury

(B) copper

(C) aluminium

(D) lithium

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