TET-Ctet-Chemistry-set-37

Chemistry MCQs for all Competitive Exams SET-37
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-37
रसायन विज्ञान बहुविकल्पीय प्रश्न


Question : 1-10

Question : 1

The enthalpy of formation of NH3 is –46 kJ mo1–1. The enthalpy change for the reaction :2NH3(g) → N2(g) + 3H2(g) is

[A].   +92kJ
[B].   +46 kJ
[C].   +184 kJ
[D].   +23 kJ


Question : 2

The condensation polymer among the following is

[A].   PVC
[B].   Polyethene
[C].   Rubber
[D].   Protein


Question : 3

The following data is obtained during the first order thermal decomposition of 2A(g) → B(g) + C(s) , at constant volume and temperature.

Sr. No.TimeTotal pressure in Pascal1.At the end of 10 minutes 3003002.After completion 200200

The rate constant in min–1is ______.

[A].   6.93
[B].   0.0693
[C].   69.3
[D].   0.00693


Question : 4

The correct order in which the first ionisation potential increases is

[A].   Na, K, Be
[B].   K, Na, Be
[C].   K, Be, Na
[D].   Be, Na, K


Question : 5

The freezing point depression constant for water is –1.86°Cm–1. If 5.00 g Na2SO4 is dissolved in 45.0 g H2O, the freezing point is changed by –3.82°C. Calculate the van’t Hoff factor for Na2SO4

[A].   0.381
[B].   2.05
[C].   2.63
[D].   3.11


Question : 6

The correct order of increasing bond length of C – H, C – O, C – C and C = C is

[A].   C – H < C – O < C – C < C = C
[B].   C – H < C = C < C – O < C – C
[C].   C – C < C = C < C – O < C – H
[D].   C – O < C – H < C – C < C = C


Question : 7

The function of Fe(OH)3 in the contact process is

[A].   To remove moisture
[B].   To remove dust particles
[C].   To remove arsenic impurity
[D].   To detect colloidal impurity


Question : 8

The correct order of ionisation energy of C, N, O, F is

[A].   C < N < O < F
[B].   C < O < N < F
[C].   F < O < N < C
[D].   F < N < C < O


Question : 9

The correct sequence of steps involved in the mechanism of Cannizzaro’s reaction is ______.

[A].   transfer of H–, transfer of H+ and nucleophilic attack
[B].   nucleophilic attack, transfer of H– and transfer of H+
[C].   electrophilic attack by OH–, transfer of H+ and transfer of H–
[D].   transfer of H+,nucleophilic attack and transfer of H–


Question : 10

The correct sequence of reactions to convert p-nitrophenol into quinol involves ______.

[A].   Hydrolysis, diazotization and reduction
[B].   Reduction, diazotization and hydrolysis
[C].   Diazotization, reduction and hydrolysis
[D].   Hydrolysis, reduction and diazotization





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