TET-Ctet-Chemistry-set-48

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Chemistry Multiple Choice Questions

Chemistry Multiple Choice Questions(MCQ)
रसायन विज्ञान बहुविकल्पीय प्रश्न

Welcome to our exclusive collections of chemistry multiple choice questions with answers. All questions are of multiple choice type.In these MCQs sets we are going to share most important questions related to chemistry. These questions are very helpful for those candidates and aspirants who are preparing for the various government and non government exam as well as in interview.
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रसायन विज्ञान बहुविकल्पीय प्रश्न


Question : 1-10

Question : 1

A solution of two liquids boils at a temperature more than the boiling point of either of them. Hence, the binary solution shows

[A].   positive deviation from Raoult’s law
[B].   negative deviation from Raoult’s law
[C].   positive or negative deviation from Raoult’s law depending upon the composition
[D].   no deviation from Raoult’s law


Question : 2

E1, E2 and E3 are the emfs of the following three galvanic cells respectively:(i) Zn (s) | Zn2+ (0.1 M) || Cu2+ (1M) | Cu (s) (ii) Zn (s) | Zn2+ (1 M) || Cu2+ (1M) | Cu (s)(iii) Zn (s) | Zn2+ (1 M) || Cu2+ (0.1M) | Cu (s)Which one of the following is true?

[A].   E1 > E2 > E3
[B].   E2 > E1 > E3
[C].   E3 > E2 > E1
[D].   E3 > E1 > E2


Question : 3

For the reactionsI2(aq) ⇌ I2(oil) Equilibrium constant is K1I2(oil) ⇌  I2(ether) Equilibrium constant is K2 for the reaction I2(aq) ⇌ I2(ether) Equilibrium constant is K3The relation between K1, K2, K3 is

[A].   K3 = K1 + K2
[B].   K3 = K1K2
[C].   K3 = K1/K2
[D].   K3 = K2/K1


Question : 4

Equal weights of CH4 and H2 are mixed in a container at 25°C. Fraction of total pressure exerted by methane is

[A].   1/2
[B].   1/3
[C].   1/9
[D].   8/9


Question : 5

For a chemical reaction of the typeA ⇄ B, K = 2.0 and B ⇄ C, K = 0.01Equilibrium constant for the reaction 2C ⇌ 2A is

[A].   25
[B].   50
[C].   2500
[D].   4 × 10–4


Question : 6

Ethyl benzene CANNOT be prepared by _____.

[A].   Wurtz-Fittig reaction
[B].   Wurtz reaction
[C].   Clemmensen reduction
[D].   Friedel-Crafts reaction


Question : 7

For a reaction to be spontaneous at all temperatures

[A].   ΔG and ΔH should be negative
[B].   ΔG and ΔH should be positive
[C].   ΔG = ΔS = 0
[D].   ΔH < ΔG


Question : 8

Excess of silver nitrate solution is added to 100 ml of 0.01 M Pentaaqua chloro chromium (III) chloride solution. The mass of silver chloride obtained in grams is[Atomic mass of silver is 108]

[A].   143.5 × 10–3
[B].   287 × 10–3
[C].   287 × 10–2
[D].   143.5 × 10–2


Question : 9

For a reversible reaction : X(g) + 3Y(g) ⇌ 2Z(g)DH = –40 kJ the standard entropies of X, Y and Z arc 60, 40 and 50 JK–1 mol–1 respectively.The temperature at which the above reaction attains equilibrium is about

[A].   400 K
[B].   500 K
[C].   273 K
[D].   373 K


Question : 10

For the following reaction C6H12O6(aq) + H2(g) ⇌ C6H14O6(aq)Which one of the following is not affected by the addition of catalyst?

[A].   Rate of forward reaction
[B].   Rate of backward reaction
[C].   Time required to reach the equilibrium
[D].   Spontaneity





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