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.Management Sciences
Category: Diagnostic Test
Bohrs model is contradicted by__________________?
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A. Plancks theory
B. Dual nature of matter
C. Heisenbergs uncertainty principle
D. All of these
Which is the unit of (K) rate constant for zero order reaction ?
A. s-1
B. mol dm-3 s-1
C. mol-1 dm3 s-1
D. mol-2 dm6 s-1
A method of separation of components from its solution using Distribution law is ___________________?
A. Sublimation
B. Crystallisation
C. Solvent extraction
D. Distillation
When benzene is heated in air with V2O5 at 450°C yields_________________?
A. Phenol
B. Maleic anhydride
C. Glyoxal
D. Benzoic acid
Isotopes differs in______________________?
A. arrangement of electrons in orbitals
B. position in the periodic table
C. properties depend upon mass
D. chemical properties
When chlorine is passed through hot solution of caustic soda the reaction is said as___________________?
A. Displacement
B. Reduction
C. Disproportionation reaction
D. Double displacement reaction
Atomic radius can be determined by_________________?
A. X – ray diffraction
B. Spectrophotometer
C. Optical microscope
D. Electron microscope
Which specie has unpaired electrons in antibonding molecular orbitals_______________?
A. O2+2
B. N2-2
C. B2
D. O2-2
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