The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by
The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by
Which of the following, when pyrolysed, produces perchloro-ethylene?
Which of the following, when pyrolysed, produces perchloro-ethylene?
Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.
Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.
Sucrose content in cane sugar may be around __________ percent.
Sucrose content in cane sugar may be around __________ percent.
Percentage of uranium in carnotite ore found in Jadugoda (Jharkhand) is about
Percentage of uranium in carnotite ore found in Jadugoda (Jharkhand) is about
Which is the main reducing agent during production of iron from iron ore in a blast furnace?
Which is the main reducing agent during production of iron from iron ore in a blast furnace?
Soap cannot be used with hard water, because
Soap cannot be used with hard water, because
Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because
Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because
A mixture of chlorine & sodium bromide acts as a/an
A mixture of chlorine & sodium bromide acts as a/an
Rotary kiln is not involved in the production of
Rotary kiln is not involved in the production of
Naphthalene is removed from coke oven gas by
Naphthalene is removed from coke oven gas by
Hydrazine (N₂H₄) is used mainly as a/an
Hydrazine (N₂H₄) is used mainly as a/an
Oxygen is produced by fractionation of air using __________ process.
Oxygen is produced by fractionation of air using __________ process.
Solvent used for extraction of oil is
Solvent used for extraction of oil is
The main use of activated carbon in water treatment is to control
The main use of activated carbon in water treatment is to control
Dacron (or terylene) fibres as compared to nylon's fibres have
Dacron (or terylene) fibres as compared to nylon's fibres have
Which of the following is not produced commercially from sea water?
Which of the following is not produced commercially from sea water?
Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of
Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of
Contact process of sulphuric acid manufacture
Contact process of sulphuric acid manufacture
Mannheim furnace is used in the manufacture of
Mannheim furnace is used in the manufacture of
In the manufacture of H₂SO₄, vanadium catalyst as compared to platinum catalyst
In the manufacture of H₂SO₄, vanadium catalyst as compared to platinum catalyst
Phenolic antiseptics are added in the __________ soap.
Phenolic antiseptics are added in the __________ soap.
The purpose of adding Na₂CO₃ to water of low alkalinity is to
The purpose of adding Na₂CO₃ to water of low alkalinity is to
Cumene (isopropyl benzene) is made by
Cumene (isopropyl benzene) is made by
Paper grade bamboo contains about __________ percent cellulose.
Paper grade bamboo contains about __________ percent cellulose.
Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C.
Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C.
Which of the following processes does not produce Cl₂ as a co-product during the manufacture of caustic soda?
Which of the following processes does not produce Cl₂ as a co-product during the manufacture of caustic soda?
A unit operation is exemplified by the process of
A unit operation is exemplified by the process of
Production of one ton of cement requires about __________ tons of limestone.
Production of one ton of cement requires about __________ tons of limestone.
Chloral is used in the manufacture of
Chloral is used in the manufacture of
Hydrophilic group of a soap or detergent solution is
Hydrophilic group of a soap or detergent solution is
The gasification reaction represented by, C + H₂O = CO + H₂, is a/an __________ reaction.
The gasification reaction represented by, C + H₂O = CO + H₂, is a/an __________ reaction.
Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of
Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of
Pick out the wrong statement.
Pick out the wrong statement.
The ideal pulp for the manufacture of paper should have high __________ content.
The ideal pulp for the manufacture of paper should have high __________ content.
Sodium bisulphite is used for __________ water.
Sodium bisulphite is used for __________ water.
Pick out the wrong statement.
Pick out the wrong statement.
High temperature carbonisation of coal takes place at __________ °C.
High temperature carbonisation of coal takes place at __________ °C.
__________ acid is an unsaturated fatty acid.
__________ acid is an unsaturated fatty acid.
__________ is used as a flux in the smelting of copper ore like chalcopyrite.
__________ is used as a flux in the smelting of copper ore like chalcopyrite.
Function of sodium thiosulphate (hypo) in development of photographic film/plate is to
Function of sodium thiosulphate (hypo) in development of photographic film/plate is to
The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an __________ detergent.
The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an __________ detergent.
Which of the following coals has the highest calorific value?
Which of the following coals has the highest calorific value?
__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.
__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.
Nickel is not used as a catalyst in the
Nickel is not used as a catalyst in the
Hydrocynic acid (HCN) is used as an insecticide for
Hydrocynic acid (HCN) is used as an insecticide for
A good quality coal should have
A good quality coal should have
Phenol formaldehyde resin is used as an adhesive in making
Phenol formaldehyde resin is used as an adhesive in making
__________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
__________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
Low temperature carbonisation of coal takes place at __________ °C.
Low temperature carbonisation of coal takes place at __________ °C.
Zeolite is used in the
Zeolite is used in the
Calgon used in water treatment is chemically
Calgon used in water treatment is chemically
Solvay process as compared to dual process (i.e. modified Solvay process)
Solvay process as compared to dual process (i.e. modified Solvay process)
Which of the following processes can remove both temporary as well as permanent hardness of water?
Which of the following processes can remove both temporary as well as permanent hardness of water?
Electric bulbs are made of __________ glass.
Electric bulbs are made of __________ glass.
Which of the following contains least amount of N₂?
Which of the following contains least amount of N₂?
Fish contains about __________ percent oil.
Fish contains about __________ percent oil.
Bleaching action of bleaching powder is due to its __________ properties.
Bleaching action of bleaching powder is due to its __________ properties.
Liquor poisoning generally occurs due to the presence of __________ in it.
Liquor poisoning generally occurs due to the presence of __________ in it.
Dichloro diphenyl __________ is the full form of DDT (an insecticide).
Dichloro diphenyl __________ is the full form of DDT (an insecticide).
Fusion of bauxite and __________ produces high alumina cement.
Fusion of bauxite and __________ produces high alumina cement.
Ethanol amine is produced using ammonia and
Ethanol amine is produced using ammonia and
Alum is commercially produced from
Alum is commercially produced from
Which of the following processes is absent in glass manufacturing process?
Which of the following processes is absent in glass manufacturing process?
Dense soda ash used in the manufacture of glass, is chemically represented by
Dense soda ash used in the manufacture of glass, is chemically represented by
RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically
RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically
__________ glass is used for the manufacture of optical glass.
__________ glass is used for the manufacture of optical glass.
Reaction of calcium carbide with water produces a gas, which is used
Reaction of calcium carbide with water produces a gas, which is used
Bromine is used in the preparation of
Bromine is used in the preparation of
__________ is produced using molasses as the starting raw material.
__________ is produced using molasses as the starting raw material.
Sulphur removal by heating of pyrite ore in presence of air is called its
Sulphur removal by heating of pyrite ore in presence of air is called its
Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?
Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?
Deaeration of water in its treatment is necessary, as it
Deaeration of water in its treatment is necessary, as it
Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
Aryl benzene sulphonate (ABS) is a
Aryl benzene sulphonate (ABS) is a
Dechlorination of treated water is necessary to
Dechlorination of treated water is necessary to
Which of the following is an ore of iron?
Which of the following is an ore of iron?
Bromine content in sea water may be around __________ ppm.
Bromine content in sea water may be around __________ ppm.
Caprolactum (a raw material for nylon-6 manufacture) is produced from
Caprolactum (a raw material for nylon-6 manufacture) is produced from
The most economical pulp for the production of newsprint would be the __________ pulp.
The most economical pulp for the production of newsprint would be the __________ pulp.
Percentage of alcohol in beer may be around __________ percent.
Percentage of alcohol in beer may be around __________ percent.
Which of the following is not responsible for causing permanent hardness of water?
Which of the following is not responsible for causing permanent hardness of water?
Type of glass used in optical work is the __________ glass.
Type of glass used in optical work is the __________ glass.
Common salt is generally not produced commonly by __________ method from brine.
Common salt is generally not produced commonly by __________ method from brine.
In the manufacture of viscose rayon, the raw material used industrially is
In the manufacture of viscose rayon, the raw material used industrially is
Comparing sulphate process with sulphite process, we find that __________ in the later.
Comparing sulphate process with sulphite process, we find that __________ in the later.
__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.
__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.
Laboratory glass wares which reacts with hydroflouric acid, are made of the __________ glass.
Laboratory glass wares which reacts with hydroflouric acid, are made of the __________ glass.
Which glass is usually used in optical work?
Which glass is usually used in optical work?
Fourdrinier machine is used in the manufacture of
Fourdrinier machine is used in the manufacture of
Which of the following is a constituent of vinegar?
Which of the following is a constituent of vinegar?
Fourdrinier machine is used in the manufacture of
Fourdrinier machine is used in the manufacture of
Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of
Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of
Yeast is used in the manufacture of
Yeast is used in the manufacture of
Which of the following paper does not require a filler during manufacture?
Which of the following paper does not require a filler during manufacture?
Which of the following is not an abrasive material ?
Which of the following is not an abrasive material ?
Sugar content in sugarcane on cane basis is about __________ percent by weight.
Sugar content in sugarcane on cane basis is about __________ percent by weight.
Fusion of limestone and __________ produces high alumina cement.
Fusion of limestone and __________ produces high alumina cement.
Catalytic oxidation of toluene produces
Catalytic oxidation of toluene produces
