A. Zinc
B. Nickel
C. Platinum
D. Copper
Related Mcqs:
- Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils________________?
A. Cause cholesterol build up and blood clotting
B. Are prone to rancid oxidation
C. Always contain some amount of nickel (as their complete removal is very difficult)
D. Have affinity to retain harmful sulphur compounds - Oils are partially hydrogenated (not fully) to manufacture Vanaspati , because fully saturated solidified oils ?
A. Cause cholesterol build up and blood clotting
B. Are prone to rancid oxidation
C. Always contain some amount of nickel (as their complete removal is very difficult)
D. Have affinity to retain harmful sulphur compounds - Commercial production of Vanaspati is done by _______________ of edible vegetable oils ?
A. Hydrogenation
B. Oxidation
C. Hydrolysis
D. Hydrocracking - Salt is added in the kettle during soap manufacture to separate ___________________?
A. Soap from lye
B. Glycerine from lye
C. The metallic soap
D. The unsaponified fat from soap - Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its________________?
A. Poor oxidation stability and high gum forming tendency
B. Greater tendency of decomposition at elevated temperature
C. Hydrolysis tendency in presence of water
D. All A, B. and C - Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like_________________?
A. High cost
B. Fragile nature
C. Easy poisoning tendency
D. All A, B. and C. - Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene ?
A. AgO
B. Al2O3
C. ZnCl2
D. Fe2O3 - Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process ?
A. NH3
B. NaCl
C. CaO
D. Coke - Manufacture of phthalic anhydride uses ______________ as a catalyst ?
A. Ni
B. Cr
C. V2O5
D. Al2O3 - Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively ?
A. V2O5 & Cr2O3.
B. Oxides of nitrogen & Cr2O3
C. V2O5 on a porous carrier & oxides of nitrogen
D. Oxides of nitrogen & V2O5 on a porous carrier
