Chemistry - Mock Test 65

Question 641

The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is ?

A) Raoult's law B) Henry's law C) Dalton's law D) Gay Lussac's law

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Question 642

The most abundant rare gas in the atmosphere is ?

A) Ne B) He C) Xe D) Ar

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Question 643

The metal used to recover copper from a solution of copper sulphate is ?

A) Hg B) Na C) Ag D) Fe

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Question 644

The nuclear particles which are assumed to hold the nucleons together are ?

A) neutrons B) mesons C) electrons D) positrons

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Question 645

The molecules of which gas have highest speed ?

A) H2 at -73°C B) CH4 at 300 K C) N2 at 1,027°C D) O2 at 0°C

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Question 646

The heat required to raise the temperature of body by 1 K is called ?

A) specific heat B) None of the above C) thermal capacity D) water equivalent

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Question 647

The number of d?

A) p-electrons in CI(Z = 17) B) d-electrons in Fe(Z = 26) C) p-electrons in Ne(Z = 10) D) s-electrons in Mg(Z = 12)

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Question 648

The main buffer system of the human blood is ?

A) H2CO3 - HCO3 B) H2CO3 - CO3^2- C) CH3COOH - CH3COO^- D) NH2CONH2 - NH2CONH^+

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Question 649

The most commonly used bleaching agent is ?

A) alcohol B) sodium chlorine C) carbon dioxide D) chlorine

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Question 650

The metal that is used as a catalyst in the hydrogenation of oils is ?

A) Pb B) Ni C) Cu D) Pt

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