By which method the molecular mass of benzene was determined as 78.18 ?
A. Specific gravity method
B. Vapor density method
C. X-ray diffraction method
D. Distillation methos
Submitted by :- Jamil Ahmed
CHEMISTRY
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Nitration of chlorobenzene gives___________________?
A. o – chloronitrobenzene
B. p – chloronitrobenzene
C. m – chloronitrobenzene
D. A & B
Submitted by :- Jamil Ahmed
Aniline is a derivative of benzene which contains__________________?
A. Imino group
B. Amino group
C. Amide group
D. Nitro group
Submitted by :- Jamil Ahmed
In benzene sulphonic acid the sulphonic group is attached with benzene ring through ___________________?
A. Hydrogen
B. Oxygen
C. Sulphur
D. OH
Submitted by :- Jamil Ahmed
The hydrolysis of Benzene trizonide will yield three moles of____________________?
A. Glyoxime
B. Benzaldehyde
C. Glycol
D. Glyoxal
Submitted by :- Jamil Ahmed
What is the molecular formula of Benzenetriozonide ?
A. C6H6O9
B. C6H5O8
C. C6H5O9
D. C6H6O6
Submitted by :- Jamil Ahmed
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
Submitted by :- Jamil Ahmed
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
Submitted by :- Jamil Ahmed
One of the outstanding features of boron is its ability to form__________________?
A. Molecular addition compounds
B. Molecular crystals
C. Semiconductors
D. Ionic compounds
Submitted by :- Jamil Ahmed