Phenol formaldehyde
An inorganic polymer
Poly tetra-fluoro-ethylene (P.T.F.E.)
A monomer
C. Poly tetra-fluoro-ethylene (P.T.F.E.)
Exothermic heat
Hissing sound
Slaked lime
All (A), (B) & (C)
Monosaccharide
Disaccharide
Polysaccharide
None of these
Naphthalene
Benzene
Toluene
Aniline
Lead glass
High silica (borosilicate) glass
Photo-sensitive glass
Fibre glass
Decreases its tensile strength
Increases its ozone & oxygen reactivity
Increases its oil & solvent resistance
Converts its plasticity into elasticity
H2SO3
H2SO4
H2S2O7
H2SO7
Kill insects, when they eat it
Emit poisonous vapour
Are absorbed throughout the plant
None of these
Alkaline
Acidic
Neutral
None of these
Bakelite
Teflon
Perspex
Nylon-6
Cellulose nitrate
Regenerated cellulose nitrate
Cellulose acetate
Regenerated cellulose acetate
Sucrose
Glucose
Starch
Maltose
Calcium sulphate
Sodium chloride
Sodium sulphate
Magnesium chloride
Ethylene dichloride
Chlorobenzene
Carbon tetrachloride
Chlorinated paraffin
Underground water
Rain water
Well water
Lake water
Anthracene
Creosote oil
Carbolic oil
None of these
Nickel
Vanadium
Alumina
Iron
Dehydrogenation
Oxidation
Alkylation
Dehydration
10
20
50
85
Steam reforming
Shift conversion
Steam gasification
None of these
Galena
Chalcopyrite
Hematite
Bauxite
L.D. steel making
Cutting and welding of metals
Medicinal purposes
Chemical oxidation processes
50
70
95
80
CO and H2
N2 and H2
H2, CH4 and CO
CO2 and H2
Catalytic hydrogenation of carbon monoxide produces methyl alcohol
In nylon-6, the number 6 represents the total number of carbon atoms in the ring
Raw materials for DDT manufacture are benzene and chlorine
Ethanolamines are produced by using ammonia and ethylene oxide as raw material
Before
After
During
To avoid
Exothermic
Endothermic
Not possible
None of these
SO2
H2SO4
SO3
SO2 + H2SO4
Less susceptible to chemical attack by molten fluxes and gases etc
Very strong
Having very high thermal conductivity
None of these
Na2CO3
Na2CO3.H2O
Na2CO3.10H2O
NaHCO3
Chemical
Biochemical
Photochemical
Electrochemical