The vocal cords in men are about _______ long.
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Which type of pathogen causes the water-borne disease Typhoid fever?
___________ is obtained by evaporation of sea.
Fire extinguishers emit which gas?
Oxygen molecule is ______.
What is the pH of water?
What is the net charge on Calcium fluoride?
Which Schedule of Indian Constitution was added by the 74th Constitutional Amendment Act?