Which compound form benzoic acid on oxidation with acidified KMnO4 or K2Cr2O7 ?
A. Toluene
B. Ethyl benzene
C. n-propyl benzene
D. All
Submitted by :- Jamil Ahmed
Special features of borate glass is that it is_________________?
A. Heat resistant
B. Low melting
C. Used to prepare chemical garden
D. Green in colour
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Borax is a white crystalline solid and it is_________________?
A. More soluble in cold water
B. More soluble in hot water
C. Insoluble in water
D. Soluble only in organic solvents
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One of the outstanding features of boron is its ability to form__________________?
A. Molecular addition compounds
B. Molecular crystals
C. Semiconductors
D. Ionic compounds
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Boron is non-Metal whereas A1 is metal. It is due to_______________________?
A. Small size
B. High nuclear charge
C. Both A and B
D. No authorized justification yet
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Ozonolysis of benzene produces___________________?
A. Glycol
B. Glyoxal
C. Vicinal diol
D. Both B & C
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The preparation of benzene from acetylene can also be said as_________________?
A. Oxidation
B. Polymerization
C. Dehydration
D. Condensation
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Benzene is heated in air with V2O5 at 450°C it undergoes________________?
A. Substitution reaction
B. Addition reaction
C. Elimination reaction
D. Oxidation reaction
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Nitronium ion is___________________?
A. NO3
B. NO
C. NO2-
D. NO2+
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Benzene does not undergo___________________?
A. Substitution reaction
B. Addition reaction
C. Polymerization reactions
D. Oxidation reactions
Submitted by :- Jamil Ahmed