A. ZnS
B. PbS
C. HgS
D. FeS
Related Mcqs:
- The composition of brown ring in nitrate test is_________________?
A. FeSO4.No
B. FeSO4.No2
C. FeSO4.No3
D. FeSO4.N2o - Mixtures which distill over without change in composition called___________________?
A. zeotropic mixture
B. azeotropic mixture
C. amphoteric mixture
D. ideal solution - Every sample of matter with uniform properties and fixed composition is called_________________?
A. solute
B. solvent
C. solution
D. phase - The composition of mixture of clay and lime stone in the raw for cement material is __________________?
A. 75% lime stone and 25% clay
B. 25% lime stone and 75% clay
C. 15% lime stone and 55% clay
D. 55% lime stone and 15% clay - The composition of ‘ Golden spangles is_________?
A. PbCrO4
B. PbI2
C. As2Cr2O7
D. BaCrO4Submitted by: Muhammad Ali Kunbhar
- If a physical and chemical change takes place at a constant pressure then the heat change during the process is called__________________?
A. Heat of transition
B. Heat of fusion
C. Enthalpy change
D. All of above - Chemical used in salt bridge is________________?
A. KOH
B. KCI
C. KNO3
D. KBr - Carnalite has chemical formula__________________?
A. KCI
B. KCI.MgCl2.6H2O
C. Na2B4O7.10H2O
D. CaCO3.MgCO3 - 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. SulphurSubmitted by: Muhammad Ali Kunbhar
- The maximum amount of product obtained by balanced chemical equation is called as __________?
A. Practical yield
B. Theoretical yield
C. Actual yield
D. NOTSubmitted by: Aamir khan Hullio
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