Coke used for the production of calcium carbide should have____________________? A. Low ash content B. Low ignition temperature C. High electrical resistivityD. All A , B. and C.
The gasification reaction represented by, C + H2O = CO + H2, is a/an _________________ reaction? A. ExothermicB. Endothermic C. Catalytic D. Autocatalytic
H2S is scrubbed from refinery gases by absorption using ________________________? A. Dilute H2SO4B. Ethanol amine C. Chilled water D. Tri-butyl phosphate
Pasteurisation of milk means______________________? A. Removal of fatty and albuminous substance from itB. Killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics C. Inhibiting the growth of micro-organisms without killing them D.…
All enzymes are made of______________________? A. Fats B. CarbohydratesC. Proteins D. Amino acids
Essential oils are usually obtained using__________________? A. Steam distillation B. Extractive distillation C. Solvent extractionD. Leaching
Which of the following is an organometallic compound ? A. Isopropyl alcoholB. Tetra-ethyl lead C. Zeolite D. Cumene
Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of_________________? A. Collagen B. Tannin C. Molasses D. Carbohydrate
_________________ is not a constituent of gun powder? A. Carbon B. Charcoal C. Sulphur D. Potassium nitrate
Resistance to fusion of the refractory under a steady rising temperature condition is called ____________________ ? A. SpallingB. Refractoriness C. Both A. & B. D. Neither A. nor B.