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WorksheetsChemistry
Total questions: 12
Worksheet time: 8mins
What is exhaustible recourses
limited resourses
unlimited resources
burning resources
none of these
Which Synthetic Fibre is known as artificial silk
nylon
polyster
rayon
none of these
Which plastic can be melted by heating?(please write all letters non-caps)
(a)
What is the MOST hottest part of the flame?
Top-most (non-luminous)
mid-layer
bottom-most
blue zone
What is added to sodium bicarbonate solution to produce the foam of carbon dioxide
Pottasium
saponin
chlorine
Sulphur
The materials that are burnt to produce a large amount of heat energy are called?
nucleus
petrol
coal
fuel
What is produced from middle layer of flame?
(a)
Which of these are formed from petroleum
petrol
coke
fuel oil
coaltar
The lowest temperature to which a substance must be heated to catch fire and start burning is called?
(a)
Which of these is known as "Clean Fuel"?
LPG
coaltar
Natural gas
lubrication oil
Fossil fuels are a _______________________.
renewable resource
unknown resource
nonrenewable resource
new resource
Terrycot is a NATURAL fibre
Ture
False
