What is the correct answer?


Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of

A. Nitric acid

B. Sulphuric acid

C. Ammonium sulphate

D. Hydrochloric acid

Correct Answer :

B. Sulphuric acid

Related Questions

Pick out the wrong statement pertaining to solvent extraction of oil.… Which of the following is not produced commercially from sea water? Digestion of wood-base materials (for manufacture of pulp) is done to Catalyst used in the manufacture of sulphuric acid by chamber & contact… Industrial production of chloroform requires acetone and Caprolactam (a raw material for nylon-6 manufacture) is produced from 'Synthesis gas' meant for the synthesis of organic compound is a variable… __________ process is used for the manufacture of sodium carbonate by… Washing soda is chemically represented by Alum [Al2(SO4)3] is used as a coagulant in water treatment to remove Platinum catalyst used in the earlier days of sulphuric acid manufacture… Zeolite is used in the Pick out the wrong statement. __________ is an ore concentrating metallurgical process involving a chemical… Tall oil obtained as a by-product from the black liquor recovery is Fermentator temperature during production of alcohol from molasses is… Function of sodium thiosulphate (hypo) in development of photographic… Viscosity index improver (like polystyrene or polyisobutylene) is added… Hydrogenation of edible vegetable oils An alkali metal salt of Palmitic acid is known as Acrylonitrile is mainly used in the __________ industry. Reaction of calcium carbide with water produces a gas, which is used Which of the following additives/water proofing agents is added to lower… Unsaturated oils compared to saturated oils have Coke used for the production of calcium carbide should have Which of the following is not present in bagasse fibre? Commercial production of soda ash by Solvay process requires limestone,… 90% of the caprolactam is converted to nylon-6 on its condensation polymerisation… Production of one ton of cement requires about __________ tons of limestone. Resistance to fusion of the refractory under a steady rising temperature…