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 is true about Zn-Cu galvanic cell ?
A Reduction occurs at anode
B K+ ion transfer from salt bridge to left beaker of ZnSO4
C Oxidation occurs at cathode
D Anode is negatively charged
Correct Answer: Anode is negatively charged
Stronger is the oxidizing agent greater is the___________________?
A Oxidation potential
B Redox potential
C e.m.f of cell
D standard reduction potential
Correct Answer: standard reduction potential
18g glucose is dissolved in 90g water the relative lowering in vapour pressure is equal to ___________________?
A 8
B 5.1
C 6
D one/fifty one
Correct Answer: one/fifty one
For which system does the equilibrium constant Kc has unit of (concentration)-1__________________?
A N2+3H2 2NH3
B H2+I2 2HI
C 2NO2 N2H4
D PCI5 PCI3+CI2
Correct Answer: 2NO2 N2H4
Atomic radius can be determined by_________________?
A X – ray diffraction
B Spectrophotometer
C Optical microscope
D Electron microscope
Correct Answer: X – ray diffraction
Bohrs model is contradicted by__________________?
A Plancks theory
B Dual nature of matter
C Heisenbergs uncertainty principle
D All of these
Correct Answer: Heisenbergs uncertainty principle
Which of the following is pseudo solid_____________________?
A CaF2
B NaCl
C Glass
D Diamond
Correct Answer: Glass
Plasma is used in_________________?
A Fluorescent bulb
B Neon signs
C Lasers
D All of these
Correct Answer: All of these
A real gas obeying vander waals equation will resemble the ideal gas if_______________________?
A Both a and b are small
B Both a and b are large
C a is small and b is large
D a is large and b is small
Correct Answer: Both a and b are small
A safe and more reliable method for drying the crystal is__________________?
A Hot air currents
B folds of filter paper
C oven
D Vacuum desiccator
Correct Answer: Vacuum desiccator