Pig iron is produced by blast furnaces in India using mostly the iron ore named
Hematite
Magnetite
Siderite
Chalcopyrite
- Sodium salt of higher molecular weight fatty acid is termed as the __________ soap.
- Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?
- Cellulose percentage in bamboo fibre is about
- Pick out the endothermic reaction out of the following.
- Which of the following is not a food additive?
- Temporary hardness of water can be removed by
- Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air…
- Hydrogenation of edible vegetable oils
- Baking soda is chemically represented by
- Separation of fresh water from sea water can be done by the __________ operation.
- Which of the following coals has the highest calorific value?
- Pick out the wrong statement.
- High temperature carbonisation of coal produces
- Polyvinyl chloride (PVC) is
- 10% oleum comprises of 10% free
- Cement setting under water employs a/an __________ process.
- Dacron is a/an
- Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium…
- Low temperature carbonisation of coal takes place at __________ °C.
- The drug used in contraceptives is
- The noble gas which occurs most abundantly in the atmosphere is
- A good quality coal should have
- __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
- __________ of rubber decreases after its vulcanisation.
- Roasting of metallurgical ores is done mainly to
- Which of the following is not responsible for causing permanent hardness of water?
- __________ is produced using molasses as the starting raw material.
- Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have
- Zeolite is a/an
- __________ is a thermosetting plastic.