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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 mass of decimole of electrons (NA) is___________________?
A 1.008 mg
B 0.184 mg
C 0.054 mg
D 5.4 mg
Correct Answer: 0.054 mg
Which one of the following is not the mono isotopic element ?
A arsenic
B uranium
C iodine
D nickel
Correct Answer: uranium
Which of the following terms is used for the mass of chlorine 35.5 ?
A relative atomic mass
B mass number
C atomic weight
D relative isotopic mass
Correct Answer: relative atomic mass
Size of molecule depends upon________________?
A Atomicity
B Shape of molecule
C Both A and B
D Difficult to predict
Correct Answer: Both A and B
Avogadros number may represent_________________?
A volume of particles
B number of particles
C mass of particles
D All of the above
Correct Answer: All of the above
The sample of isotopes of an element which needs not to be vaporized in the vaporization chamer_________________?
A Gas
B Liquid
C Volatile solid
D All
Correct Answer: Gas
Which of the following ion formation is always exothermic ?
A Uni-negative
B Uni-positive
C Di-negative
D Di-positive
Correct Answer: Uni-negative
Which one is true about isotope ?
A Same number of neutrons
B Same mass number
C Same physical properties
D Same chemical properties
Correct Answer: Same chemical properties
Molecular ions are formed by passing______________________?
A High energy electron beam
B ? – particle
C X-rays
D All of the above
Correct Answer: All of the above
Which of the following are isoelectronic species ?
A H+ H H-
B Li+ Na+ K+
C C1- Br- I
D F- Ne Na+
Correct Answer: F- Ne Na+
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