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11.  The Sun is a __________.

A.    Star

B.    Planet

C.    Asteroid

D.    Meteor

12.  The average adult has a blood volume of about __________ liters.

A.    4

B.    5

C.    6

D.    7

13.  The most abundant element in the universe is __________.

A.    Oxygen

B.    Hydrogen

C.    Carbon Dioxide

D.    Silicon

14.  The most abundant element in the Earth's crust is __________.

A.    Oxygen

B.    Hydrogen

C.    Carbon Dioxide

D.    Silicon

15.  Each day human body breathe in __________ liters 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

16.  Deficiency of Vitamin-D results in __________.

A.    night blindness

B.    rickets

C.    scurvy

D.    hair fall

17.  The SI unit of "pressure" is _________.

A.    pascal

B.    joule

C.    tesla

D.    henry

18.  The most densest substance on the Earth is __________.

A.    Platinum

B.    Copper

C.    Steel

D.    Osmium

19.  A camera uses a __________ to form an image.

A.    convex lens

B.    concave lens

C.    condenser lens

D.    none of these

20.  Which from the following is NOT a conductor?

A.    Aluminium

B.    Silicon

C.    Graphite

D.    All are conductors

ANSWERS:

11.  A

12.  B

13.  B

14.  A

15.  C

16.  B

17.  A

18.  D

19.  A

20.  D