761. Which vitamin is available to the human body through sunbathing?
A: Vitamin D
B: Vitamin A
C: Vitamin K
D: Vitamin B12
762. The final phase of a star’s evolution is determined by the star’s:
A: Gravitational pull
B: Age
C: Density
D: Mass
763. Copper is used in the production of______?
A: Children’s toys
B: Brick kilns
C: Kitchen utilities
D: Electric wires
764. How many meters are in one mile?
A: 1509.34
B: 1409.34
C: 1609.34
D: None of Above
765. The increasing vapor pressure caused by heating a liquid is due to______?
A: increasing potential energy of molecules
B: increase inter-molecular interactions
C: increasing kinetic energy of molecules
D: decreasing surface tension
766. “Which one of the following statements is true?
A. Gases do not conduct heat
B. The best conductors are non-metals
C. Conduction current occurs only in liquids
D. None of the statements is true*
767. Ice can be changed to water by:
A. Adding more water molecules
B. Changing the motion of the water molecules
C. Rearranging the atoms in water molecules
D. Destroying the atoms in water molecules
768. The building block of elements is called:
A. Atoms
B. Molecules
C. Compounds
D. Isotopes
769. Boiling of an egg is change which is :
A. Physical
B. Chemical
C. Physiological
D. Morphological
770. The temperature of liquid nitrogen is:
A. -32 degree centigrade
B. -80 degree centigrade
C. -100 degree centigrade
D. -196 degree centigrade*
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