A. Iron
B. Mercury
C. Nickel
D. Osmium
A. Oxidation
B. Reduction
C. Decomposition
D. Hydrolysis
A. Nitrogen
B. Iodine
C. Chlorine
D. Bromine
A. Chlorine
B. Nitrogen
C. Ammonia
D. Carbon dioxide
A. Germon radio
B. Radio active gas
C. Artificial fibre
D. An explosive
A. Carbon dioxide
B. Carbon monoxide
C. Nitrogen
D. Hydrogen
A. Circulation of the air
B. Humidity
C. Temperature
D. All of the above
A. 23 hours 56 min 4 sec
B. 24 hours
C. 23 hours 57 min 9 sec
D. Non of above
A. Faraday
B. Lavosiier
C. Arrhenius
D. Mendeleev
A. Copper
B. Zinc
C. Aluminium
D. Iron