Phenol is mainly used
To produce benzene
To produce phenol formaldehyde
To produce polyester resin
As a plasticiser for unsaturated polyester
Correct Answer :
B. To produce phenol formaldehyde
Related Questions
Fish contains about __________ percent oil.
5
10
20
35
Main constituent of dolomite is
CaCO3
MgCO3
K2CO3
Na2CO3
Which of the following is a detergent?
Fatty alcohol
Alkyl benzene sulphonate (ABS)
Fatty acids
Methylene chloride
The gasification reaction represented by, C + H2O = CO + H2, is a/an __________ reaction.
Exothermic
Endothermic
Catalytic
Autocatalytic
Hydrogenation of edible vegetable oils
Is an exothermic reaction
Increases their melting point
Is done in presence of nickel catalyst
All (A), (B) and (C)
Pick out the wrong statement.
Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate
Glass is decolorized during its manufacture by adding antimony oxide, manganese dioxide or arsenic oxide
Ordinary glass is represented chemically by Na2O . CaO . 6SiO2
Red color is imparted to glass by addition of arsenic oxide
__________ is produced using Polycondensation reaction.
Polythene
Phenol formaldehyde
Poly vinyl chloride
None of these
Essential oils are usually obtained using
Steam distillation
Extractive distillation
Solvent extraction
Leaching
Salt is added in the kettle during soap manufacture to separate
Soap from lye
Glycerine from lye
The metallic soap
The unsaponified fat from soap
Bakelite is
Same as Polytetrafluoroethylene (PTFE)
An inorganic polymer
Same as thermosetting phenol-formaldehyde
Not a polymer
Wax is a
Mixture of glycerides
Mixture of esters of polyhydric alcohols excepting glycerine
Liquid at room temperature
Mixture of glycerides of fatty acids
Hydrazine (N2H4) is used mainly as a/an
Explosive
Rocket fuel
Detergents additive
None of these
Inversion of sucrose produces
Fructose
Glucose
Both (A) & (B)
Neither (A) nor (B)
Which of the following is not responsible for causing permanent hardness of water?
Ca(HCO3)2
CaCl2
MgCl2
None of these
Which of the following is a disaccharide?
Sucrose
Glucose
Starch
Maltose
Fermentation of molasses to produce ethyl alcohol is done at __________ °C.
20 - 30
< - 5
100 - 150
250 - 300
Which one of the following is not an elastomer?
Polyisoprene
Neoprene
Nitrile-butadiene
None of these
Cement setting under water employs a/an __________ process.
Hydration
Decomposition
Oxidation
Reduction
Bisphenol A is produced by the condensation of acetone with
Formaldehyde
Ethyl alcohol
Diethyl ether
Phenol
Vanillin is a type of
Anti-pyretic drug
Food preservative
Flavour
Dye
Concentration of NaOH solution produced by diaphragm electrolytic cell is about __________ percent.
10
25
50
98
Pick out the endothermic reaction out of the following.
C+ ½O2 = CO
CO + 3H2 = CH4 + H2O
CaCO3 = CaO + CO2
CO + ½O2 = CO2
__________ is not a constituent of gun powder.
Carbon
Charcoal
Sulphur
Potassium nitrate
Production of one ton of dry paper pulp requires about __________ tons of bamboo or wood.
1
2.5
5
10
Zeigler process
Produces high density polyethylene
Produces low density polyethylene
Uses no catalyst
Employs very high pressure
Thermosetting plastic materials
Can be repeatedly melted
Is useful for melt casting
Cannot be melted after forming
Is useful for spinning
Commercially ethylene is produced from naphtha by
Catalytic cracking
Catalytic dehydrogenation
Pyrolysis
Hydrocracking
Function of sodium thiosulphate (hypo) in development of photographic film/plate is to
Brighten the faint images
Remove metallic silver
Convert silver chloride to silver
Remove unexposed silver halide
Which of the following sugars is the sweetest?
Glucose
Fructose
Sucrose
Lactose
Na2CO3 is called
Washing soda
Soda ash
Plaster of Paris
Calcite