Plastics are synthetic
rubbers
fibres
resins
sugars
Correct Answer :
C. resins
Related Questions
The compound of iron used in the manufacture of blue-black ink is
ferric chloride
ferric sulphate
ferric thiocyanate
ferrous sulphate
Deficiency of iron causes
nervous disorders
heart diseases
anaemia
impairment of vision
The atomic number of an element represents
number of neutrons in the nucleus
number of protons and neutrons in the nucleus
the valency of the element
number of protons in the nucleus
Which of the following types of water gives lather easily with soap?
Hard water
Heavy water
Soft water
Both (a) and (b)
The gas which has a faint sweet odour is
nitrogen
nitrous oxide
nitric oxide
nitrogen peroxide
The commonest ore of aluminium is
cryolite
bauxite
malachite
azurite
Hard water does not lather well with soap because
it contains carbonates of calcium and magnesium
it contains sodium chloride
it is highly coloured
it contains suspended impurities
Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to
dehydration
oxidation
reduction
dehydrogenation
In the making of jewels, gold is usually mixed with
zinc
tin
copper
aluminium
The compound or nitrogen used in dry cells is
ammonia
ammonium nitrate
ammonium chloride
ammonium nitrite
Lead soaps are used in
shaving creams
adhesive tapes
toilet powders
lubricants
Vulcanisation was discovered by
Goodyear
Wohler
Baeyer
Perkin
Coke is a substance obtained
from coal mines
when wood is burnt in excess of air
by heating coal out of contact with air
by heating wood out to contact with air
A non-material kind of pollution is
land pollution
air pollution
noise pollution
water pollution
Which of the following is not a metal?
Lithium
Helium
Sodium
Cobalt
Which of the following is not an antibiotic?
streptomycin
terramycin
aureomycin
codein
Burglar proof safes are made of
Tungsten steel
Manganese steel
Chromium steel
Nickel steel
Which of the following is an essential constituent of acids?
Oxygen
Nitrogen
Hydrogen
Chlorine
The purest form of carbon is
animal charcoal
coal
wood charcoal
sugar charcoal
Lunar caustic is
calcium sulphate
ammonium chloride
caustic soda
silver nitrate
Which among the following gases present in the air discolours brass nameplates?
Hydrogen Sulphide
Nitrogen
Carbon-di-oxide
Oxygen
Jeweller's rouge is
magnetic oxide of iron
ferric oxide
ferrous oxide
ferrous carbonate
Leakage in Liquefied Petroleum Gas (LPG) cylinders is easily detected by adding
mercaptans
propylene
carbon disulphide
phosgene
The neutron was discovered by
Chadwick
Madam Curie
Becquerel
Aston
Concrete is a mixture of
cement an limestone
cement and sand
cement and gravel
cement, sand and gravel
Which or the following electrolysis?
Aluminium
Copper
Zinc
Iron
According to the modern Periodic Law, the properties of elements are periodic functions of their
valency
atomic mass
number of neutrons
atomic number
High temperature thermometers use
sodium amalgam
an alloy of sodium and potassium
silver amalgam
calcium amalgam
The compound which is both an antiseptic and a disinfectant is
phenol
iodoform
bleaching powder
blue vitriol
Which of the following can absorb gases quickly?
Activated charcoal
Anthracite coal
Diamond
Graphite