Atomic radius can be determined by_________________?
A. X – ray diffraction
B. Spectrophotometer
C. Optical microscope
D. Electron microscope
Submitted by :- Jamil Ahmed
mnsoomro
Bohrs model is contradicted by__________________?
A. Plancks theory
B. Dual nature of matter
C. Heisenberg’s uncertainty principle
D. All of these
Submitted by :- Jamil Ahmed
Which of the following is pseudo solid_____________________?
A. CaF2
B. NaCl
C. Glass
D. Diamond
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The common name of propane -1 3-dioic acid is____________________?
A. Oxalic acid
B. Succinic acid
C. Malonic acid
D. Fumaric acid
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Which one does not exhibit aldol condensation___________________?
A. Ethanal
B. Acetone
C. Benzaldehyde
D. Butanone
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The process of fermentation involves all the enzymes except__________________?
A. Diastase
B. Invertase
C. Zymase
D. Sucrase
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Which one of the following is not a good leaving group ?
A. HSO4-
B. Cl-
C. OH-
D. Br-
Submitted by :- Jamil Ahmed
When toluene reacts with chlorine in sunlight the first major product is__________________?
A. Benzyl chloride
B. Benzal dichloride
C. O-chlorotoluene
D. O-chlorotoluene and P-chlorotoluene
Submitted by :- Jamil Ahmed
Vinyl acetylene combines with hydrochloric acid produces___________________?
A. Diviny1 acetylene
B. Ethylidene dichloride
C. Chloroprene
D. 1 – 3 – 3 – trichloro butane
Submitted by :- Jamil Ahmed
A great variety of the organic compounds is due to its property of carbon_________________?
A. Show tetravalency
B. Exhibit catenation
C. Show isomerism
D. Can form multiple bonds
Submitted by :- Jamil Ahmed