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Chemistry 1488 MCQs [All-Courses]

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oost your exam preparation with our Chemistry MCQs designed for PPSC, FPSC, NTS, OTS, PTS, AJKPSC, BPSC, KPPSC, PMS, CSS, and all competitive exams.
Our content covers Basic Chemistry, Atomic Structure, Periodic Table, Chemical Reactions, Acids & Bases, Organic Chemistry, and everyday chemical concepts.

All Topics  1488

The octane number of zero is assigned to____________?
A 2-methyl octane
B n-heptane
C iso-octane
D 3-methyl octane
Correct Answer: n-heptane
Ozonolysis of benzene produces___________________?
A Glycol
B Glyoxal
C Vicinal diol
D Both B & C
Correct Answer: Glyoxal
A polymer in which three different monomers combine called_____________?
A Copolymer
B Terpolymer
C Homopolymer
D Biopolymer
Correct Answer: Terpolymer
The Latin word formica means ant. The name formic acid is derived from this Latin word because__________?
A this acid, in ancient times, was used to eliminate ant-hills
B this corrosive acid is secreted by ants to drive away their enemies
C this acid was first obtained by the distillation of ants
D ants are attracted by the odour of this acid
Correct Answer: this acid was first obtained by the distillation of ants
The preparation of benzene from acetylene can also be said as_________________?
A Oxidation
B Polymerization
C Dehydration
D Condensation
Correct Answer: Polymerization
The nitrogenous base different in RNA as compared to DNA is_________________?
A Cytosine
B Thymine
C Adenine
D Guanine
Correct Answer: Thymine
The heat energy produced when the human body metabolises 1 gram of fat is__________?
A 30 KJ
B 1 KJ
C 39 KJ
D 29 KJ
Correct Answer: 39 KJ
Benzene is heated in air with V2O5 at 450°C it undergoes________________?
A Substitution reaction
B Addition reaction
C Elimination reaction
D Oxidation reaction
Correct Answer: Oxidation reaction
The mechanism by which the genetic information can be duplicated is called_________________?
A Duplication
B Transcription
C Replication
D Mutation
Correct Answer: Replication
Which of the following orbitals has maximum penetration effect?
A S
B P
C d
D f
Correct Answer: S
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