Chemistry MCQs

Page No. 6

Parke’s process is used in the extraction of________?


aIron


bSodium


cSilver


dZinc


View Answer Silver

Which metal is used as a reducing agent in Smelting______?


aC


bZn


cAl


dCu


View Answer C

A process used for the Concentration of Ore is________?


aRoasting


bForth flotation


cElectrolysis


dDistillation


View Answer Forth flotation

Which Oxide of Manganese is amphoteric?


aMnO2


bMn2O3


cMn2O7


dMnO


View Answer MnO2

The purpose of Smelting an ore is to________?


aReduce it


bOxidize it


cObtain an alloy


dSeparate volatile impurities


View Answer Reduce it

Which set of quantum numbers is not allowed?


an=2,l=1,m1=0,ms=+1/2


bn=2,l=2,m1=1,ms=+1/2


cn=2,l=0,m1=0,ms=-1/2


dn=2,l=2,m1=1,ms=-1/2


View Answer n=2,l=2,m1=1,ms=-1/2

Find the PH of a 0.001 M solution of Nitric acid HNO3?


a2


b3


c4


d5


View Answer 3

Potassium Permanganate is used for purifying drinking water, because_________?


aIt is a sterilising agent.


bIt dissolves the impurities of water.


cIt is a reducing agent.


dIt is an oxidising agent.



Marsh gas is_______?


aNitrogen


bEthane


cMethane


dHydrogen


View Answer Methane

The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of:_______?


aBromine


bFluorine


cchlorine


dSulphur


View Answer Sulphur

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