17503. Nickel is not used as a catalyst in the __________ reaction.
17504. Roasting of metallurgical ores is done mainly to
17505. Molasses is the starting material for the production of
17506. BHC (Benzene hexachloride) is made by the chlorination of benzene
17507. Diaphragm electrolytic cell as compared to mercury electrolytic cell
17508. Calcareous & argillaceous materials are used in the manufacture of
17509. Which is the apex organization of marketing Co-operatives?
17510. Commercial production of calcium carbide requires limestone and __________ as raw materials.
17511. Which one of the following is not likely to be a constituent of vegetable oils ?
17512. Nitroglycerene absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as a controlled explosive called dynamite. The raw material used for its manufacture are glycerene, nitric acid and
17513. The process involved in converting rubber into a thin sheet or coating it on fabric is called
17514. Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.
17515. Air used in aerobic fermentation must be sterilized, otherwise the
17516. Alkylbenzene sulfonate (ABS) is a
17517. High temperature carbonisation of coal produces
17518. Alcohol content in freshly prepared natural and fortified wine may be respectively around __________ percent.
17519. Setting of plaster of paris is accompanied with
17520. Process conditions in fermentator used for production of penicillin is
17521. Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of
17522. Sodium chloride content in sea water is about __________ gms/litre.
17523. Fluorescent dyes are added in detergents to
17524. High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to
17525. Polyvinyl chloride (PVC) is
17526. Bleaching of paper pulp is done with
17527. NDDB is setup for development of which products?
17528. Isopropyl benzene produced by alkylation of benzene with propylene is known as
17529. Consider the production of ammonia from methene and air as raw materials. The catalyst used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis.
17530. For the hydrogenation of oils __________ (A) __________ is commonly used as catalyst and __________ (B) __________ is a catalyst poison.
17531. Main constituents of natural rubber is
17532. Highly porous refractory bricks are
17533. Fumigant insecticides
17534. Which of the following is an endothermic reaction ?
17535. Fermentator temperature during production of alcohol from molasses is around __________ °C.
17536. Which of the following coals has the highest calorific value ?
17537. Which of the following is not an abrasive material ?
17538. CAMPCO is a joint venture of
17539. Finely ground calcium aluminate & silicate is a/an
17540. Cooking liquor in case of sulphite process is
17541. 90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C.
17542. Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as __________ oil.
17543. Fats as compared to oils have
17544. Thermal pyrolysis of ethylene dichloride produces
17545. The main component of pyrex glass is
17546. Alum [Al2(SO4)3] is used as a coagulant in water treatment to remove
17547. __________ is an ore concentrating metallurgical process involving a chemical change.