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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

When benzene is heated in air with V2O5 at 450°C yields_________________?
A Phenol
B Maleic anhydride
C Glyoxal
D Benzoic acid
Correct Answer: Maleic anhydride
In 1 – pentene -4- yne the carbon exhibit hybridization_________________?
A sp3 – sp2
B sp2 – sp
C sp2 – sp
D sp3 – sp2 – sp
Correct Answer: sp3 – sp2
Which one of the following looks odd__________________?
A H2SO4
B KMnO4
C H2S
D K2CrO4
Correct Answer: H2S
The most paramagnetic element is____________________?
A Iron
B Cobalt
C Chromium
D Manganese
Correct Answer: Iron
Which molecule has the highest bond energy among the halogens_________________?
A Fluorine
B Chlorine
C Iodine
D Bromine
Correct Answer: Chlorine
The most reactive allotropic form of phosphorus is________________?
A White
B Redox potential
C Black
D Violet
Correct Answer: White
Which is carnalite________________?
A KCI
B NaCI
C KCI MgCl2 6H2O
D Na2CO3. 10H2O
Correct Answer: KCI
Which is the unit of (K) rate constant for zero order reaction ?
A s-1
B mol dm-3 s-1
C mol-1 dm3 s-1
D mol-2 dm6 s-1
Correct Answer: s-1
Which of the following can be used in laptops ?
A Silver oxide battery
B Fuel cell
C Nickel cadmium cell
D Lead accumulator
Correct Answer: Nickel cadmium cell
Which of the following solution has the highest boiling point ?
A 5.85% NaCl Solution
B 18.0 % glucose solution
C 6.0 % urea solution
D All have same boiling point
Correct Answer: 5.85% NaCl Solution
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