quiz
A liquid metal
Mercury
A metal which is the best conductor
gold
When metal reacts with an acid, it liberates
hydrogen
AB + C --> CB + A Identify the type of reaction
Displacement reaction
A liquid non metal
Bromine
A petroleum product used to surface roads
bitumen
conversion of organic matter into coal is called
Carbonisation
Products of coal are
Coal gas, coal tar and coke
Petroleum is refined by the process
Fractional distillation
Symbol of mercury
Hg
Metals which are stored in kerosene
sodium and potassium
Hammering metal into thin sheet is
Malleability
Making ringing sound when it is hit
sonorous
Magnesium reacts with oxygen and produce ------- which ------- in nature.
Magnesium oxide, basic
Define displacement reaction
Highly reactive metal displaces the low reactive metal from its solution.
When iron pin is added to copper sulphate solution , what are colour changes happen? name the products formed.
Blue copper sulphate changed to green ferrous sulphate and reddish brown copper is deposited.
Expansion of LPG and CNG
Liquified petroleum gas , compressed natural gas
Name a non metal which is lustrous, hard, conductor, liquid, an important for the survival of life. ( 5 answers)
iodine, diamond, graphite, bromine, oxygen