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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

Phosphorous acid upon thermal decomposition yields phosphoric acid and____________________?
A Phosphine
B Phosphorus
C Water
D Phosphorus pentoxide
Correct Answer: Phosphine
Which one of the following is an inorganic fertilizer ?
A manure
B urea
C ammonium nitrate
D All
Correct Answer: ammonium nitrate
Which Oxide of Manganese is amphoteric?
A MnO2
B Mn2O3
C Mn2O7
D MnO
Correct Answer: MnO2
Acetic anhydride can be obtained by treating ethyl alcohol with___________________?
A P2O5
B H2SO4
C Both A and B
D PCI5
Correct Answer: Both A and B
The nutrients which are required in very small amount for the normal growth of plants are called_________________?
A nitrogenous fertilizers
B micronutrients
C phosphorus fertilizer
D all of the above
Correct Answer: micronutrients
The purpose of Smelting an ore is to________?
A Reduce it
B Oxidize it
C Obtain an alloy
D Separate volatile impurities
Correct Answer: Reduce it
Allotropic form of phosphorus that is poisonous is___________________?
A White
B Red
C Black
D Violet
Correct Answer: White
Argillaceous material does not include________________?
A vlay
B marine shells
C slate
D blast furnace slag
Correct Answer: marine shells
Which set of quantum numbers is not allowed?
A n=2,l=1,m1=0,ms=+1/2
B n=2,l=1,m1=-1,ms=+1/2
C n=2,l=0,m1=0,ms=-1/2
D n=2,l=2,m1=1,ms=-1/2
Correct Answer: n=2,l=2,m1=1,ms=-1/2
Phosphorus is a Greek word and it means_________________?
A Light bearing
B Fire
C Impure
D Tetrahedral
Correct Answer: Light bearing
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