A. Presence of air
B. Absence of air
C. High concentration
D. Presence of ammonium salts
Correct Answer: High concentration ✔
Last Updated: February 12, 2019
Related MCQs
- In the Solvay process, the product from the calciner is__________?
- Naphthols are derivatives of__________?
- Which one of the following is not an elastomer ?
- Maleic anhydride is produced by catalytic oxidation of__________?
- SO2 is bubbled through hot sugar cane juice to__________?
- Acrylonitrile is mainly used in the __________ industry?
- In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed ?
- Reaction of calcium carbide with water produces a gas, which is used__________?
- Styrene (a monomer for the production of polystyrene) is commercially produced by __________?
- Carboxymethyl cellulose (CMC) is added in detergents to__________?
- Carborundum consists mainly of__________?
- Soap cannot be used with hard water, because __________?
- The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm2/gm?
- Phenolic antiseptics are added in the __________ soap?
- Inversion of sucrose produces__________?
- Baking soda is chemically represented by__________?
- Extraction of __________ employs an electrolytic process ?
- At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system) ?
- Economics of ‘Solvay Process’ depends upon the efficiency of __________?
- An oil is converted into fat by its__________?
- __________ of quicklime produces slaked lime ?
- Dechlorination of treated water is necessary to __________?
- Presence of carbonaceous matter in the sewage__________?
- Lithophane is __________?
- Phenol formaldehyde__________?
- Blue colour is imparted to glass by the addition of__________?
- Production of one ton of cement requires about __________ tons of limestone ?
- Nitrile rubber is produced by the polymerisation of__________?
- Which of the following is not present in bagasse fibre ?
- Which of the following is not a product of coal tar distillation ?
- Low temperature carbonisation of coal takes place at __________ °C ?
- Which of the following is an explosive ?
- Yellow phosphorus is transported under__________?
- Shaving soaps are__________?