TET-Ctet-Chemistry-set-30

Chemistry MCQs for all Competitive Exams SET-30
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-30
रसायन विज्ञान बहुविकल्पीय प्रश्न


Question : 1-10

Question : 1

In acetylene molecule, between the carbon atoms there are

[A].   Three sigma bonds
[B].   Two sigma and one pi bonds
[C].   One sigma and two pi bonds
[D].   Three pi bonds


Question : 2

Helium is used in balloons in place of hydrogen because it is

[A].   Incombustible
[B].   lighter than hydrogen
[C].   Radioactive
[D].   More abundant than hydrogen


Question : 3

In alkaline medium, alanine exists predominantly as/in ______.

[A].   Zwitterion
[B].   Anion
[C].   Covalent form
[D].   Cation


Question : 4

Hofmann’s bromamide reaction is to convert

[A].   Amine to amide
[B].   Amide to amine
[C].   Alcohol to acid
[D].   Acid to alcohol


Question : 5

In chromite ore, the oxidation number of iron and chromium are respectively ______.

[A].   +3, +6
[B].   +3, +2
[C].   +2, +3
[D].   +2, +6


Question : 6

How many chiral carbon atoms are present in 2, 3, 4 – trichloropentane?

[A].   3
[B].   2
[C].   1
[D].   4


Question : 7

Hydrogen gas is not liberated when the following metal is added to dil. HCl

[A].   Ag
[B].   Zn
[C].   Mg
[D].   Sn


Question : 8

How many optically active stereomers are possible for butan-2, 3-diol?

[A].   1
[B].   2
[C].   3
[D].   4


Question : 9

Hydroxyl ion concentration of 1M HCl is

[A].   1 × 1014mol dm–3
[B].   1 × 10-1mol dm–3
[C].   1 × 10-13mol dm–3
[D].   1 × 101mol dm–3


Question : 10

Which one of the following statements is true’?

[A].   Drying of oil involves hydrolysis
[B].   Saponification of oil yields a diol.
[C].   Refining of oil involves hydrogenation
[D].   Addition of antioxidant to oil minimizes rancidity





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