Thermoplastic materials
Do not soften on application of heat
Are heavily branched molecules
Are solvent insoluble
None of these
Correct Answer :
D. None of these
Related Questions
Flash point of most vegetable oils is about __________ °C.
50
100
200
300
The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at
SASOL (in South Africa)
Redcar (U.K.)
Los Angeles (U.S.A.)
Trombay (India)
Calcareous & argillaceous materials are used in the manufacture of
Lead
Cement
Carbon disulphide
None of these
Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its
Poor oxidation stability and high gum forming tendency
Greater tendency of decomposition at elevated temperature
Hydrolysis tendency in presence of water
All (A), (B) and (C)
Manufacture of phthalic anhydride uses __________ as a catalyst.
Ni
Cr
V2O5
Al2O3
The main use of activated carbon in water treatment is to control
Bacterial growth
Taste and odour
Turbidity
None of these
Chemical formula of 'salt cake' is
Na2SO4
CaSO4
MgSO4
BaSO4
Vanillin is a type of
Anti-pyretic drug
Food preservative
Flavour
Dye
Which of the following is not a raw material used for the manufacture of ordinary glass?
Iron oxide
Soda ash
Limestone
Silica
Which glass is usually used in optical work?
Lead glass
High silica (borosilicate) glass
Photo-sensitive glass
Fibre glass
Naphthols are derivates of
Methyl amine
Naphthalene
Phenol
Xylene
Laboratory glass wares which reacts with hydrofluoric acid, are made of the __________ glass.
Lead
Borosilicate
Soda lime
Alkali silicate
Which of the following is not produced on commercial scale from sea water?
Bromine
Magnesium compounds
Potassium compounds
Sodium sulphate
Yellow phosphorus is transported under
Air
Water
Nitrogen
Helium
Which of the following is an explosive?
Nitro-glycerine
Trinitrotoluene (TNT)
Cellulose nitrate
All (A), (B), and (C)
Which one of the following is not an elastomer?
Polyisoprene
Neoprene
Nitrile-butadiene
None of these
Reaction of calcium carbide with water produces a gas, which is used
As an illuminant
For metal cutting/welding
Both (A) & (B)
Neither (A) nor (B)
Dichloro diphenyl __________ is the full form of DDT (an insecticide).
Tetrachloroethane
Trichloroethane
Tetrachloromethane
Trichloromethane
Nylon-6 as compared to Nylon-66 is having higher
Hardness
Abrasion/resistance
Melting point
None of these
Starting material for the commercial production of ethyl alcohol in India is
Rice
Molasses
Fruit of Mahua tree
Maize
Fatty material used in soap making is
Fatty acid
Fatty alcohols
Tallow
Detergents
Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.
75
< 10
> 30
50
Thermoplastic materials
Do not soften on application of heat
Are heavily branched molecules
Are solvent insoluble
None of these
__________ process is used for producing soda ash.
Chamber
Chance
Tromp
Solvay
Nickel is not used as a catalyst in the __________ reaction.
Shift conversion
Oil hydrogenation
Steaming reforming of naphtha
Ammonia cracking/dissociation
Phenol is mainly used
To produce benzene
To produce phenol formaldehyde
To produce polyester resin
As a plasticiser for unsaturated polyester
Transparent soaps (e.g. Pears) are
Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency
Metallic soaps with frothing agent and free Stearic acid to achieve transparency
Metallic soaps with frothing agent from which glycerine has not been recovered
None of these
Which of the following processes is absent in glass manufacturing process?
Sintering
Annealing
Shaping or forming
Melting
Oil produced by solvent extraction
Has low free fatty acid content
Is odourless
Both (A) & (B)
Neither (A) nor (B)
Alcohol percentage in molasses may be around
10
40
70
85