TET-Ctet-Chemistry-set-28

Chemistry MCQs for all Competitive Exams SET-28
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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Chemistry MCQs for all Competitive Exams SET-28
रसायन विज्ञान बहुविकल्पीय प्रश्न


Question : 1-10

Question : 1

For the reaction Fe2O3 + 3CO → 2Fe + 3CO2 the volume of carbon monoxide required to reduce one mole of ferric oxide is

[A].   22.4 dm3
[B].   44.8 dm3
[C].   67.2 dm3
[D].   11.2 dm3


Question : 2

Entropy of the universe is

[A].   continuously increasing
[B].   continuously decreasing
[C].   zero
[D].   constant


Question : 3

For the reaction H2O (l) ⇌ H2O(g) at 373 K and one atmospheric pressure

[A].   ΔH = TΔS
[B].   ΔH = ΔE
[C].   ΔH = 0
[D].   ΔE = 0


Question : 4

Excess of PCl5reacts with conc. H2SO4 giving

[A].   chlorosulphonic acid
[B].   thionyl chloride
[C].   sulphuryl chloride
[D].   sulphurous acid


Question : 5

For the reversible reactionA(s) +B(g) ⇌ C(g) + D(g): DG0 = –350kJ.Which one of the following statements is true?

[A].   Equilibrium constant is greater than one.
[B].   The entropy change is negative.
[C].   The reaction is thermodynamically not feasible.
[D].   The reaction should be instantaneous.


Question : 6

Excess of carbon dioxide is passed through 50 ml of 0.5 M calcium hydroxide solution.  After the completion of the reaction, the solution was evaporated to dryness. The solid calcium carbonate was completely neutralised with 0.1 N Hydrochloric acid. The volume of Hydrochloric acid required is (At. mass of calcium = 40)

[A].   500 cm3
[B].   400 cm3
[C].   300 cm3
[D].   200 cm3


Question : 7

Identify the ore not containing iron

[A].   chalcopyrites
[B].   carnallite
[C].   siderite
[D].   limonite


Question : 8

Formation of coloured solution is possible when metal ion in the compound contains

[A].   paired electrons
[B].   unpaired electrons
[C].   lone pair of electrons
[D].   none of these


Question : 9

For a stable molecule the value of bond order must be

[A].   negative
[B].   positive
[C].   zero
[D].   there is no relationship between stability and bond order.


Question : 10

For a chemical reaction A → B, the rate of the reaction is 2 × 10–3 mol dm–3 s–1, when the initialconcentration is 0.05 mol dm–3. The rate of the same reaction is 1.6 × 10–2 mol dm–3 s–1when the initial concentration is 0.1 mol dm–3. The order of the reaction is

[A].   3
[B].   1
[C].   2
[D].   0





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