A. Crystallization
B. Sublimation
C. Solvent extraction
D. Filtration
Related Mcqs:
- The number of moles of CO2 which contains 16 g of oxygen is__________________?
A. 0.25
B. 0.5
C. 0.75
D. 1 - Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is__________________?
A. 6
B. 8
C. 10
D. 4 - The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is__________________?
A. Ethylene iodide
B. Ethylene bromide
C. Ethylene chloride
D. Ethylene fluoride - Density of H2SO4 in lead accumulator is__________________?
A. 1.25g/cm3
B. 1.3g/cm3
C. 1.20g/cm3
D. 1.15g/cm3 - Orgosterol is__________________?
A. Orgocalciferol
B. Vitamin D2
C. Sterol
D. all of the above - The carbon atom of carbonyl group is__________________?
A. sp hybridized
B. sp2 hybridized
C. cp3 hybridized
D. dsp2 hybridized - The resonance energy of benzene is__________________?
A. 150.5 kJ/mol
B. 250.5 kJ/mol
C. 150.5 Cal/mol
D. 250.5 Cal/mol - The chemical composition of cinnabar is__________________?
A. ZnS
B. PbS
C. HgS
D. FeS - The ether used in Wurtz synthesis is__________________?
A. acidic
B. basic
C. aqueous
D. dry - The formula of starch is__________________?
A. C12H22O11
B. C6H10O5
C. (C6H10O5)n
D. C6H12O6
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