Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is___________________?

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Phenolic antiseptics are added in the __________________ soap?

A. Shaving B. Medicated C. Metallic D. Transparent...

The main product of high temperature carbonisation of coal is_____________________?

A. Coke B. Ammonia C. Tar D. Phenol...

Process conditions in fermentator used for production of penicillin is____________________?

A. 25°C, 2 atm B. 50°C, l0 atm C. 30°C, 200 mm Hg (absolute) D. 90°C, 45 atm...

Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on ____________________?

A. Slaked lime B. Soda lime C. Calcium perchlorate D. None of these...

In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst___________________?

A. Gives higher conversion efficiency B. Has a longer life and is not poisoned by arsenic C. Handles lower SO2 content gas (7 -10% SO2), thus increasing the capital cost of the plant D. All A , B. and C....