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Short-sight defects could be corrected by a _____________ lens?
A. concave lens
B. convex lens
C. converging lens
D. none of these
Deficiency of vitamin B1 is causes__________?
B. Bone Infection
The innermost part of the earth is__________?
D. None of these
The ozone layer is at a height of________kilometers from the surface of the Earth?
A. 10 to 20
B. 20 to 30
C. 30 to 40
D. 40 to 50
A Little inhalation is done through________?
B. pipes and cigars
C. Both A and B offer little inhalation
D. both offer extreme inhalation
The human brain uses__________ percent of the total oxygen and blood in the body?
Which of the following planets have the longest day?
Which of the following planets is known as a “morning star”?
At what angle above the horizon must the sun be to create a rainbow?
A. 90 degrees
B. 60 degrees
C. 40 degrees
D. 65 degrees
Which of the following planets have the longest day?, The study of cancer is called?, A Little inhalation is done through, The innermost part of the earth is?,At what angle above the horizon must the sun be to create a rainbow?