A. Limestone
B. Soda ash
C. Coke
D. Sodium sulphate
Correct Answer: Soda ash ✔
Last Updated: February 14, 2019
Related MCQs
- The main use of HCl is in the__________?
- High purity nitrogen is used in__________?
- Percentage of glycerine present in the spent lye obtained during soap manufacture is about__________?
- Which of the following is an unsaturated fatty acid ?
- Iron ore hematite is concentrated using __________?
- The most widely used coagulant for removing suspended impurities from water is__________?
- Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo ?
- Flexible foam (for mattresses) is usually made of__________?
- Thermoplastic materials__________?
- The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to__________?
- Main product in calcium carbide-water reaction is__________?
- The yield of tar from high temperature carbonisation of dry coal is about __________ percent?
- Permanent hardness of water can be removed by__________?
- Bitterns is a/an__________?
- Nylon-66 is so named because the__________?
- The main product of high temperature carbonisation of coal is__________?
- Salt is added in the kettle during soap manufacture to separate __________?
- Percentage of alcohol in beer may be around __________ percent?
- Fatty material used in soap making is __________?
- The main use of activated carbon in water treatment is to control __________?
- Separation of fresh water from sea water can be done by the __________ operation ?
- Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like__________?
- Presence of H2S in raw water (to be chlorinated) results in the__________?
- __________ is an ore of lead?
- Hydrogen gas is not produced commercially (for nitrogenous fertiliser manufacture) by __________?
- The most commonly used substance to speed up the sedimentation of sewage is__________?
- Which of the following is not produced commercially from sea water ?
- Oleum produces fumes of__________?
- Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in__________?
- Rancidity of the fatty oil can be reduced by its__________?
- Thermosetting plastic materials__________?
- Digestion of wood-base materials (for manufacture of pulp) is done to __________?
- Antibiotic__________?
- __________ is a thermosetting plastic?
- Linde process of gas liquefaction employs__________?
- Chemical formula of ‘salt cake’ is__________?
- In Kraft process of paper manufacture, white cooking liquor consists of caustic soda__________?
- Enzymes are__________?
- Catalyst used during the manufacture of ‘Vanaspati Ghee’ is __________?
- Naphthalene is removed from coke oven gas by __________?
- Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of __________?
- Which of the following is an ore of iron ?
- Commercial production of Vanaspati is done by __________ of edible vegetable oils ?
- Sulphuric acid completely saturated with sulphur trioxide is called__________?
- Glauber’s salt is chemically ?
- __________ is used as a flux in the smelting of copper ore like chalcopyrite ?
- Poly Vinyl Chloride (P.V.C.) is a __________ material ?
- Catalyst used in the oxidation of benzene to produce Maleic anhydride is __________?
- Which of the following is not an insecticide ?
- Molecular weight of plastics ranges from __________?
- Cation exchanger is regenerated usually with__________?