M C Q s D r i v e

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.

Which of the following substance do not show continuous solubility curve ?
A KCIO4
B Na2SO4. 10H2O
C K2Cr2O7
D PbCl2
Correct Answer: Na2SO4. 10H2O
A malleable solid is one which can be_________________?
A Converted into wires
B Converted into thin sheets
C Melted easily
D All of the above
Correct Answer: Converted into thin sheets
Which has the minimum freezing point ?
A One Molal NaCI
B One molal KCI solution
C One molal CaCI2
D One molal urea solution
Correct Answer: One molal CaCI2
Crystallites are present in_________________?
A crystalline solids
B amorphous solids
C liquid crystals
D all of the above
Correct Answer: amorphous solids
The molal boiling point constant is the ration of the elevation of boiling point to____________________?
A Molarity
B Molality
C More fraction of solvent
D Mole fraction of solute
Correct Answer: Molality
Molar heat of vaporization of water is_________________?
A 40.7 KJ/mole
B 40.7 J/mole
C 40.7 cal/mole
D 40.7 Kcal/mole
Correct Answer: 40.7 KJ/mole
Which of the following unit of concentration is independent of temperature ?
A Molarity
B Molality
C Mole fraction
D all
Correct Answer: Molality
Liquid gets the shape of the container when it is poured into it. Which one of the following reasons justifies it ?
A Liquid do not have definite shape
B Liquid do not have definite volume
C Lieuid is highly compressible
D Liquid molecules can slide over each other
Correct Answer: Liquid molecules can slide over each other
Which one of the following salt does not hydrolyzed________________?
A Na2SO4
B AlCl3
C CuSO4
D NH4Cl
Correct Answer: Na2SO4
The number of formula units in 29.25g of common salt_________________?
A 6.022 x 1023
B 3.01 x 1023
C 2 x NA
D 4 x 6.022 x 1023
Correct Answer: 3.01 x 1023