Which metal is used as a reducing agent in Smelting______?
A. C
B. Zn
C. Al
D. Cu
Chemistry Mcqs
A process used for the Concentration of Ore is________?
A process used for the Concentration of Ore is________?
A. Roasting
B. Forth flotation
C. Electrolysis
D. Distillation
Which Oxide of Manganese is amphoteric?
Which Oxide of Manganese is amphoteric?
A. MnO2
B. Mn2O3
C. Mn2O7
D. MnO
The purpose of Smelting an ore is to________?
The purpose of Smelting an ore is to________?
A. Reduce it
B. Oxidize it
C. Obtain an alloy
D. Separate volatile impurities
Which set of quantum numbers is not allowed?
Which set of quantum numbers is not allowed?
A. n=2,l=1,m1=0,ms=+1/2
B. n=2,l=1,m1=-1,ms=+1/2
C. n=2,l=0,m1=0,ms=-1/2
D. n=2,l=2,m1=1,ms=-1/2
Find the PH of a 0.001 M solution of Nitric acid HNO3?
Find the PH of a 0.001 M solution of Nitric acid HNO3?
A. 2
B. 3
C. 4
D. 5
Potassium Permanganate is used for purifying drinking water, because_________?
Potassium Permanganate is used for purifying drinking water, because_________?
A. It is a sterilising agent.
B. It dissolves the impurities of water.
C. It is a reducing agent.
D. It is an oxidising agent.
Marsh gas is_______?
Marsh gas is_______?
A. Nitrogen
B. Ethane
C. Methane
D. Hydrogen
The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of:_______?
The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of:_______?A. Bromine
B. Fluorine
C. Chlorine
D. Sulphur
B. Fluorine
C. Chlorine
D. Sulphur
The average salinity of sea water is________?
The average salinity of sea water is________?
A. 3%
B. 3.5%
C. 2.5%
D. 2%