41
The study of tissues is called:
42
Which gas is used in the purification of water?
43
Who discovered the circulation of blood?
44
Which vitamin is water-soluble?
45
The hardest substance available on Earth is:
46
Which mirror is used in the headlights of cars?
47
What is the main cause of Acid Rain?
48
Which organ breaks down old Red Blood Cells?
49
The chemical name of Plaster of Paris is:
50
Which gas is used in refrigerators for cooling?
51
Which device converts Mechanical Energy into Electrical Energy?
52
Night Blindness is caused by the deficiency of:
53
What is the main component of Sand?
54
Which blood cells help in clotting?
55
The study of Insects is called:
56
Which layer of atmosphere protects us from meteoroids?
57
Who invented the World Wide Web (WWW)?
58
Chemical name of Common Salt is:
59
Which gland produces Tears?
60
What is the unit of electric resistance?