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.

The halogen which reacts very slowly with halogen is________________?
A Fluorine
B Chlorine
C Bromine
D Iodine
Correct Answer: Iodine
Sum of exponents of molar concentration is called___________________?
A Order of reaction
B Molecularity
C Rate of reaction
D Average of reaction
Correct Answer: Order of reaction
If a compound contains 24 gram of carbon 2 gram of hydrogen and 64 gram of oxygen then its empirical formula will be________?
A C2H2O4
B CH2
C CH2O
D CHO2
Correct Answer: CHO2
The halogen which reacts spontaneously with gold (Au) to form Au+3 is ________________?
A F2
B Cl2
C Br2
D I2
Correct Answer: Cl2
On increasing the temperature the rate of reaction increases mainly because_________________?
A The activation energy of the reaction increases
B Concentration of the reacting molecules increases
C Collision frequency increases
D None of these
Correct Answer: Collision frequency increases
The reaction of Lucas reagent is the fastest with_________?
A (CH3)2CHOH
B CH3(CH2)OH
C CH3CH2OH
D (CH3)3COH
Correct Answer: (CH3)3COH
The most powerful oxidizing agent among the halogens is__________________?
A F2
B Cl2
C Br2
D I2
Correct Answer: F2
The addition of a catalyst to the reaction system__________________?
A Increases the rate of forward reaction only
B Increases the rate of reverse reaction
C Increases the rate of forward but decreases the rate of backward reaction
D Increases the rate of forward as well as backward reaction equally
Correct Answer: Increases the rate of forward as well as backward reaction equally
For the reaction 2HI ____________> H2+ I2
A Kp > kc
B Kc > kp
C Kp= kc
D Kp ≤ kc
Correct Answer: Kp= kc
Vander Waals forces are stronger in_______________?
A F2
B Cl2
C Br2
D I2
Correct Answer: I2