Which one of the following makes the bulk of hydrosphere content ?
a. oceans
B. glaciers & icecaps
C. fresh water lakes and ponds
D. All have equal distribution
Submitted by :- Jamil Ahmed
mnsoomro
When common salt is dissolved in water ?
a. Boiling point of water decrease
B. Boiling point of water increase
C. Boiling point of water remains same
D. None of the above
Submitted by :- Jamil Ahmed
Which of the following are the conditions of colligative properties_______________?
A. Non-electrolyte solute
B. Non-volatile solute
C. Dilute solution
D. All of the above
Submitted by :- Jamil Ahmed
Which of the following is an example of liquid in gas solution?
A. Opals
B. Dust particles in smoke
C. Paints
D. Fog
Submitted by :- Jamil Ahmed
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
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