Each day human body breathe in ___ litres of air.
A. 5,000 to 10,000
B. 10,000 to 15,000
C. 15,000 to 20,000
D. 20,000 to 25,000
Here, you may find CSS Optional Subjects MCQs. If you want to prepare MCQs of optional subjects, CSS MCQs platform is here to serve you while preparing your MCQs portion of your CSS Exam. Please practice these CSS Optional Subjects MCQs on a daily basis.
Deficiency of Vitamin-D results in:
A. night blindness
B. rickets
C. scurvy
D. hair fall
A device which converts chemical energy into electrical energy is called:
A. motor
B. generator
C. moving-coil meter
D. Battery
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