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
A good quality coal should have
A good quality coal should have
Solvent used for extraction of oil is
Solvent used for extraction of oil is
Percentage of alcohol in beer may be around __________ percent.
Percentage of alcohol in beer may be around __________ percent.
Naphthalene is removed from coke oven gas by
Naphthalene is removed from coke oven gas by
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.
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.
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 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?
Phenolic antiseptics are added in the __________ soap.
Phenolic antiseptics are added in the __________ soap.
Cumene (isopropyl benzene) is made by
Cumene (isopropyl benzene) is made by
Aryl benzene sulphonate (ABS) is a
Aryl benzene sulphonate (ABS) is a
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
Dechlorination of treated water is necessary to
Dechlorination of treated water is necessary to
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
__________ 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.
__________ acid is an unsaturated fatty acid.
__________ acid is an unsaturated fatty acid.
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?
Fourdrinier machine is used in the manufacture of
Fourdrinier machine is used in the manufacture of
Production of one ton of cement requires about __________ tons of limestone.
Production of one ton of cement requires about __________ tons of limestone.
Caprolactum (a raw material for nylon-6 manufacture) is produced from
Caprolactum (a raw material for nylon-6 manufacture) is produced from
Sodium bisulphite is used for __________ water.
Sodium bisulphite is used for __________ water.
Reaction of calcium carbide with water produces a gas, which is used
Reaction of calcium carbide with water produces a gas, which is used
__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.
__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.
Which of the following paper does not require a filler during manufacture?
Which of the following paper does not require a filler during manufacture?
Paper grade bamboo contains about __________ percent cellulose.
Paper grade bamboo contains about __________ percent cellulose.
Fourdrinier machine is used in the manufacture of
Fourdrinier machine is used in the manufacture of
__________ 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.
Low temperature carbonisation of coal takes place at __________ °C.
Low temperature carbonisation of coal takes place at __________ °C.
A unit operation is exemplified by the process of
A unit operation is exemplified by the process of
Hydrazine (N₂H₄) is used mainly as a/an
Hydrazine (N₂H₄) is used mainly as a/an
Hydrophilic group of a soap or detergent solution is
Hydrophilic group of a soap or detergent solution is
Which of the following is not an abrasive material ?
Which of the following is not an abrasive material ?
Which of the following is an ore of iron?
Which of the following is an ore of iron?
Oxygen is produced by fractionation of air using __________ process.
Oxygen is produced by fractionation of air using __________ process.
__________ is produced using molasses as the starting raw material.
__________ is produced using molasses as the starting raw material.
Bromine is used in the preparation of
Bromine is used in the preparation of
Catalytic oxidation of toluene produces
Catalytic oxidation of toluene produces
Which of the following is a constituent of vinegar?
Which of the following is a constituent of vinegar?
__________ glass is used for the manufacture of optical glass.
__________ glass is used for the manufacture of optical glass.
Chloral is used in the manufacture of
Chloral is used in the manufacture of
Rotary kiln is not involved in the production of
Rotary kiln is not involved in the production of
The purpose of adding Na₂CO₃ to water of low alkalinity is to
The purpose of adding Na₂CO₃ to water of low alkalinity is to
Zeolite is used in the
Zeolite is used in the
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
High temperature carbonisation of coal takes place at __________ °C.
High temperature carbonisation of coal takes place at __________ °C.
The main use of activated carbon in water treatment is to control
The main use of activated carbon in water treatment is to control
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 of the following processes is absent in glass manufacturing process?
Which of the following processes is absent in glass manufacturing process?
Bleaching action of bleaching powder is due to its __________ properties.
Bleaching action of bleaching powder is due to its __________ properties.
Which of the following is not produced commercially from sea water?
Which of the following is not produced commercially from sea water?
Ethanol amine is produced using ammonia and
Ethanol amine is produced using ammonia and
Contact process of sulphuric acid manufacture
Contact process of sulphuric acid manufacture
Which of the following contains least amount of N₂?
Which of the following contains least amount of N₂?
Hydrocynic acid (HCN) is used as an insecticide for
Hydrocynic acid (HCN) is used as an insecticide for
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?
Fish contains about __________ percent oil.
Fish contains about __________ percent oil.
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.
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.
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.
A mixture of chlorine & sodium bromide acts as a/an
A mixture of chlorine & sodium bromide acts as a/an
Comparing sulphate process with sulphite process, we find that __________ in the later.
Comparing sulphate process with sulphite process, we find that __________ in the later.
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.
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
Deaeration of water in its treatment is necessary, as it
Deaeration of water in its treatment is necessary, as it
Mannheim furnace is used in the manufacture of
Mannheim furnace is used in the manufacture of
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
Sugar content in sugarcane on cane basis is about __________ percent by weight.
Sugar content in sugarcane on cane basis is about __________ percent by weight.
Which of the following, when pyrolysed, produces perchloro-ethylene?
Which of the following, when pyrolysed, produces perchloro-ethylene?
Pick out the wrong statement.
Pick out the wrong statement.
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?
Common salt is generally not produced commonly by __________ method from brine.
Common salt is generally not produced commonly by __________ method from brine.
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
Calgon used in water treatment is chemically
Calgon used in water treatment is chemically
__________ 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.
Which glass is usually used in optical work?
Which glass is usually used in optical work?
The ideal pulp for the manufacture of paper should have high __________ content.
The ideal pulp for the manufacture of paper should have high __________ content.
Soap cannot be used with hard water, because
Soap cannot be used with hard water, because
Pick out the wrong statement.
Pick out the wrong statement.
Fusion of limestone and __________ produces high alumina cement.
Fusion of limestone and __________ produces high alumina cement.
Liquor poisoning generally occurs due to the presence of __________ in it.
Liquor poisoning generally occurs due to the presence of __________ in it.
Phenol formaldehyde resin is used as an adhesive in making
Phenol formaldehyde resin is used as an adhesive in making
Sucrose content in cane sugar may be around __________ percent.
Sucrose content in cane sugar may be around __________ percent.
In the manufacture of H₂SO₄, vanadium catalyst as compared to platinum catalyst
In the manufacture of H₂SO₄, vanadium catalyst as compared to platinum catalyst
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
Nickel is not used as a catalyst in the
Nickel is not used as a catalyst in the
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?
Dacron (or terylene) fibres as compared to nylon's fibres have
Dacron (or terylene) fibres as compared to nylon's fibres have
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
Which of the following coals has the highest calorific value?
Which of the following coals has the highest calorific value?
Percentage of uranium in carnotite ore found in Jadugoda (Jharkhand) is about
Percentage of uranium in carnotite ore found in Jadugoda (Jharkhand) is about
In the manufacture of viscose rayon, the raw material used industrially is
In the manufacture of viscose rayon, the raw material used industrially is
Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
Bromine content in sea water may be around __________ ppm.
Bromine content in sea water may be around __________ ppm.
Electric bulbs are made of __________ glass.
Electric bulbs are made of __________ glass.
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
Yeast is used in the manufacture of
Yeast is used in the manufacture of
Type of glass used in optical work is the __________ glass.
Type of glass used in optical work is the __________ glass.
Alum is commercially produced from
Alum is commercially produced from
