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.Management Sciences
Category: Diagnostic Test
When benzene is heated in air with V2O5 at 450°C yields_________________?
0
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
The molecules of CO2 in dry ice form__________________?
A. Ionic crystal
B. Covalent crystal
C. Molecular crystal
D. Any type of crystal
Stronger is the oxidizing agent greater is the___________________?
A. Oxidation potential
B. Redox potential
C. e.m.f of cell
D. standard reduction potential
Ethy1 chloride on reduction in the presence of Zn/HCI produces___________________?
A. n. butane
B. Ethanol
C. Ethane
D. Diethy1 ether
For industrial preparation of CH3CHO catalytic promoter is_________________?
A. PdCl2
B. Cu2Cl2
C. CuCl2
D. PbCl2
In 1 – pentene -4- yne the carbon exhibit hybridization_________________?
A. sp3 – sp2
B. sp2 – sp
C. sp2 – sp
D. sp3 – sp2 – sp
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