Ozone hole is substantial depletion of ozone in every year during__________________?
A. Aug – Nov
B. Sep – Nov
C. Nov – Dec
D. Dec – Jan
Submitted by :- Jamil Ahmed
CHEMISTRY
Prepare for your upcoming test with a comprehensive collection of Chemistry multiple-choice questions (MCQs), ranging from basic to advanced topics. These Chemistry MCQs cover various sections of the subject, providing you with valuable practice and boosting your chances of scoring well in the Chemistry portion of the test. Whether you’re a student or a job seeker preparing for exams, these MCQs will prove beneficial for your test preparation.
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Which of the following is used as water disinfectant to avoid the formation of toxic compounds_________________?
A. Cl2
B. O3
C. ClO2
D. both B & C
Submitted by :- Jamil Ahmed
Chlorination of water may be harmful if the water contains_________________?
A. Ammonia
B. Dissolved oxygen
C. Carbon dioxide
D. All
Submitted by :- Jamil Ahmed
Which of the following factors help to measure quality of water ?
Which of the following gases is the main cause of acid rain ?
A. CO
B. NO2
C. both a & b
D. none of the above
Submitted by :- Jamil Ahmed
Solution of Na2SO4 will be_________________?
A. basic
B. acidic
C. neutral
D. cannot be predicted without data
Submitted by :- Jamil Ahmed
The compounds in which water molecules are added are called_______________?
A. Hydrated ions
B. double salts
C. hydrates
D. complexes
Submitted by :- Jamil Ahmed
Mixtures which distill over without change in composition called___________________?
A. zeotropic mixture
B. azeotropic mixture
C. amphoteric mixture
D. ideal solution
Submitted by :- Jamil Ahmed
In partially miscible liquids the two layers are___________________?
A. saturated solutions of each liquid
B. unsaturated solutions of each liquid
C. normal solution of each liquid
D. no layer formation takes place
Submitted by :- Jamil Ahmed
Number of moles in 1 kg of solvent is called_________________?
A. normality
B. molarity
C. molality
D. mole fraction
Submitted by :- Jamil Ahmed