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.

What will be the pressure of 1 mole of an ideal gas maintained at 300 K and 250cm3 volume ?
A 98.5 atm
B 96.7 atm
C 95.8 atm
D 97.1 atm
Correct Answer: 98.5 atm
What do we call to sudden expansion of plasma ?
A Avogadros law
B Grahams law of diffusion
C Joule Thompson effect
D Daltons law of partial pressure
Correct Answer: Joule Thompson effect
The highest temperature at which a substance can exist as a liquid is called its______________?
A Critical temperature
B Standard temperature
C Absolute temperature
D Upper consulate temperature
Correct Answer: Critical temperature
The spreading of fragrance or scent in air is due to_______________?
A Diffusion
B Effusion
C Attraction with air
D Low dsensity
Correct Answer: Diffusion
The partial pressure exerted by the water vapours is called_______________?
A Surface tension
B Aqueous tension
C Vapour pressure
D Hydraulic pressure
Correct Answer: Aqueous tension
Which one is the right value for R ?
A 0.0821 atm dm3k-1mol-
B 0.0821 atm m3k-1mol-1
C 2 cal k-1 mol-1
D 8.314 Nm2k-1mol-1
Correct Answer: 0.0821 atm dm3k-1mol-
For a gas where volume and pressures are 1dm3 and 2 atm respectively what should be its new volume when pressure is increased to 6 atm at constant temperature ?
A 1/2dm3
B 1/3dm3
C 1/4dm3
D 2/3dm3
Correct Answer: 1/3dm3
What is the abundant form of matter on earth ?
A Gas
B Liquid
C Solid
D Plasma
Correct Answer: Solid
In how many forms do matter exists ?
A Three
B Four
C Five
D Two
Correct Answer: Four
Which of the following option is incorrect about gases ?
A All molecules move with same speed
B All molecules behave independently
C PV / RT = n
D All gases cannot be liquefied through Linds Method
Correct Answer: All molecules move with same speed