Major component of flint glass is
Lead oxide
Silica
Alumina
Soda
Correct Answer :
A. Lead oxide
Related Questions
Celluloid is chemically
Cellulose acetate
Regenerated cellulose
Cellulose nitrate
Cellulose acetate butyrate
Acetone is produced by catalytic dehydrogenation of
Phenol
Naphthalene
Isopropanol
Ethyl benzene
Roasting of metallurgical ores is done mainly to
Dehydrate it
Sinter the ore
Remove CO2 & H2O
Remove arsenic & sulphur
Lubricating greases are a mixture of
Mineral oil, soap and additives
Mineral oil and metallic soap
Mineral oil and fatty oil
Fatty oil and metallic soap
The basic constituent of vegetable oils is
Triglyceride
Fatty acids
Fatty alcohol
Mono esters
Alum [Al2(SO4)3] is used as a coagulant in water treatment to remove
Colour
Turbidity
Bacteria
All (A), (B) and (C)
Paper pulp produced by Kraft/sulphate process is
Bleached easily
Dull white in color
Strong fibrous
Dark colored
Starting material for the commercial production of ethyl alcohol in India is
Rice
Molasses
Fruit of Mahua tree
Maize
Use of water having dissolved oxygen in boilers promotes
Corrosion
Sequestration
Scale formation
None of these
Commonly used glass is known as the __________ glass.
Flint
Hard
Pyrex
Soda
Concentration of hydrogen peroxide is done by
Crystallisation
Vacuum crystallisation
Atmospheric distillation
Dehydration
CaO is called
Quick lime
Slaked lime
Limestone
Calcite
Chemical name of aspirin (an analgesic drug) is
Acetylsalicylic acid
Nictonic acid
Calcium acetate
Methyl salicylate
Main use of hydrazine is
As a rocket fuel
In water treatment
As a disinfectant
As fire retardant
Pick out the wrong statement pertaining to nitric acid.
About 90% of nitric acid is manufactured by Ostwald's process
It is a strong mono basic acid which reacts with almost all the metals except noble metals
Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
Arc process of nitric acid manufacture is economical as compared to Ostwald's process
Production of one ton of dry paper pulp requires about __________ tons of bamboo or wood.
1
2.5
5
10
Chemical formula of oleum is
H2SO3
H2SO4
H2S2O7
H2SO7
The major constituent of black liquor generated during paper manufacture is sodium
Sulphate
Carbonate
Hydroxide
Bi-carbonate
RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically
Cyclo trimethylene trinitramine
Trinitro resorcinol
Cyclo tetramethylene tetranitramine
Trinitrobenzene
In the manufacture of viscose rayon, the raw material used industrially is
Eucalyptus wood
Bamboo
Bagasse
Fine teak wood
The process used for the manufacture of ethyl alcohol from molasses is
Distillation
Dehydration
Dehydrogenation
None of these
Bio-degradable detergents
Can be readily oxidised
Pose problem in sewerage plant
Have an isoparaffinic structure
Should not be used as it spoils the cloth
Which of the following is not a food additive?
Citric acid
Invertage
Benzoyl peroxide
Ammonium chloride
The product obtained on mixing calcium oxide with water is called
Quicklime
Slaked lime
Milk of lime
None of these
L.D. converter is used in the production of
Pig iron
Steel
Copper
Zinc
Addition of calcium oxide to water produces
Exothermic heat
Hissing sound
Slaked lime
All (A), (B) & (C)
The amount of benzene present in pure Benzol is about __________ percent.
30
50
70
90
Heating of __________ to 120°C, produces plaster of paris.
Blue vitriol
Gypsum
Calcium silicate
Calcium sulphate
More than 100 percent of __________ is present in oleum.
SO3
H2SO4
H2SO3
SO2
Thorium is mainly used
For the manufacture of gas mantles
As a fissile fuel in a nuclear reactor
In the manufacture of hydrogen bomb
In the treatment of cancer