Everyday Science MCQs

5120 MCQs  (Page 171 of 512)

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Which one of the following is not a good leaving group ?
A. Hso4-
B. Cl-
C. Oh-
D. Br-
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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 does not exhibit aldol condensation___________________?
A. Ethanal
B. Acetone
C. Benzaldehyde
D. Butanone
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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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Industrial materials thermal power stations are coated with__________________?
A. Polyester resins
B. Epoxy paints
C. Polyamide resins
D. Polyvinyl chloride
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Main source of organic compounds is__________________?
A. Animal
B. Fossil
C. Coal
D. Plants
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Hydro carbons which burn with smoky flame are called_________________?
A. Aliphatic
B. Alicyclic
C. Aromatic
d. aldehyde
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Octane number 2 2 4-trimethyl pentane is__________________?
A. 100
B. 90
C. 80
D. 70
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Geometric isomerism is usually found in___________________?
A. Alkanes
B. Alkenes
C. Alkynes
D. Esters
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Organic compounds that are essentially nonpolar and exhibit weak intermolecular forces have________________?
A. Low melting points
B. Low vapour pressure
C. High boiling points
D. High electrical conductivity
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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