QuizMaster

A. Prevent global warming
B. Filter out ultraviolet rays
C. Absorb pollution
D. All of the above

A light year is a unit of ?

A. Time
B. Energy
C. Length
D. Mass

A. Heating
B. Beating
C. Artificial nuclear radioactivity
D. Chemical reaction

A. Silicon
B. Radium
C. Aluminum
D. Carbon

Rectified spirit contains alcohol about ?

A. 80%
B. 95%
C. 70%
D. 85%

Which woody raw material is used for the manufacture of paper pulp?

A. Cotton
B. Poplar
C. Bagasse
D. Rice straw

Human population growth is greatest in develog countries because ?

A. the birth rate is high in develog countries
B. the death rate is high in develog countries.
C. much of the population has already reached the child bearing age.
D. most of the world’s population lives in industrialized countries.

Radioactive isotope of Uranium used in Nuclear Bomb is ?

A.92 U 235
B.92 U 234
C. 92 U 233
D. 92 U 238

A. Ectotherm
B. Endotherm
C. Exotherm
D. Heterotherm.