TET-Ctet-Chemistry-set-31

Chemistry MCQs for all Competitive Exams SET-31
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-31
रसायन विज्ञान बहुविकल्पीय प्रश्न


Question : 1-10

Question : 1

IUPAC name of (CH3)3CCl

[A].   2 chloro 2 methyl propane
[B].   t-butyl chloride
[C].   n-butyl chloride
[D].   3-chloro butane


Question : 2

In Dumas’ method of estimation of nitrogen 0.35 g of an organic compound gave 55 mL of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be(Aqueous tension at 300 K = 15 mm)

[A].   14.45
[B].   15.45
[C].   16.45
[D].   17.45


Question : 3

Which one of the following statements is not true regarding (+) Lactose?

[A].   (+) Lactose, C12H22O11 contains 8-OH groups
[B].   On hydrolysis (+) Lactose gives equal amount of D(+) glucose and D(+) galactose
[C].   (+) Lactose is a b-glycoside formed by the union of a molecule of D(+) glucose and a molecule of D(+)galactose
[D].   (+) Lactose is reducing sugar and does not exhibit mutarotation


Question : 4

In Kjeldahl’s method, ammonia from 5 g of food neutralizes 30 cm3 of 0.1 N acid. The percentage of nitrogen in the food is ______.

[A].   8.4
[B].   0.84
[C].   1.68
[D].   16.8


Question : 5

ln electrophillic aromatic substitution reaction, the nitro group is meta directing because it

[A].   increases electron density at meta position
[B].   increases electron density at ortho and para positions
[C].   decreases electron density at ortho and para positions
[D].   decreases electron density at meta position


Question : 6

In order to increase the volume of a gas by 10%, the pressure of the gas should be

[A].   increased by 10 %
[B].   increased by 1 %
[C].   decreased by 10 %
[D].   decreased by 1 %


Question : 7

ln the electrolysis of acidulated water, it is desired to obtain 1.12 cc of Hydrogen per second under S.T.P. condition.The current to be passed is

[A].   19.3 Amp
[B].   0.965 Amp
[C].   1.93 Amp
[D].   9.65 Amp


Question : 8

In the brown ring test, the brown colour of the ring is due to

[A].   ferrous nitrate
[B].   ferric nitrate
[C].   a mixture of NO and NO2
[D].   nitrosoferrous sulphate


Question : 9

Lucas test is associated with

[A].   Carboxylic acid
[B].   Alcohols
[C].   Aldehydes
[D].   Phenols


Question : 10

In the electrolytic refining of Zinc, ______.

[A].   the impure metal is at the cathode.
[B].   graphite is at the anode.
[C].   acidified zinc sulphate.is the electrolyte.
[D].   the metal ion gets reduced at the anode.





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