A. Before
B. After
C. During
D. To avoid
Correct Answer: Before ✔
Last Updated: February 14, 2019
Related MCQs
- Which of the following is a detergent ?
- Dense soda ash used in the manufacture of glass, is chemically represented by__________?
- __________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia ?
- Pick out the wrong statement ?
- Addition of calcium oxide to water produces__________?
- Pick out the wrong statement?
- Bromine is used in the preparation of__________?
- Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have__________?
- Pick out the wrong statement?
- 90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C ?
- Pick out the wrong statement pertaining to the soap manufacture?
- Pick out the wrong statement ?
- Which of the following processes is absent in glass manufacturing process ?
- Pick out the wrong statement ?
- Bleaching of paper pulp is done with__________?
- Concentration of sulphide ores is done usually by__________?
- Diaphragm electrolytic cell as compared to mercury electrolytic cell__________?
- Pick out the wrong statement ?
- Pick out the false statement pertaining to water treatment ?
- Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is__________?
- Pick out the wrong statement?
- Thermal pyrolysis of ethylene dichloride produces__________?
- Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials?
- Massecuite is a terminology used in the __________ industry ?
- Pick out the true statement pertaining to water treatment ?
- Pick out the wrong statement ?
- Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture?
- More than 100 percent of __________ is present in oleum?
- Which of the following is not an abrasive material ?
- Black liquor is converted into white liquor by __________?
- Roasting of metallurgical ores is done mainly to __________?
- Thermosetting materials __________?
- Silicone is a/an __________?
- Liquor poisoning generally occurs due to the presence of __________ in it ?
- The process involved in converting rubber into a thin sheet or coating it on fabric is called __________?
- Sulphur removal by heating of pyrite ore in presence of air is called its __________?
- Alcohol content in freshly prepared natural and fortified wine may be respectively around __________ percent ?
- Saponification number of an oil or fat__________?
- Coke used for the production of calcium carbide should have__________?
- The gasification reaction represented by, C + H2O = CO + H2, is a/an __________ reaction?
- H2S is scrubbed from refinery gases by absorption using __________?
- Pasteurisation of milk means__________?
- Sucrose is a disaccharide consisting of__________?
- All enzymes are made of__________?
- Essential oils are usually obtained using__________?
- Which of the following is an organometallic compound ?
- Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of__________?
- __________ is not a constituent of gun powder?
- Resistance to fusion of the refractory under a steady rising temperature condition is called __________ ?
- Cumene (isopropyl benzene) is made by __________?
- Setting of plaster of Paris is accompanied with__________?