Everyday Science MCQs

5120 MCQs  (Page 282 of 512)

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Which of the following do not give aldol condensation reactions ?
A. Formaldehyde
B. Acetaldehyde
C. Diemthyl ketone
D. Propionaldehyde
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Formaldehyde and lactose are combined to produce throat lozenges named as__________________?
A. Formamint
B. Lactomint
C. Aldomint
D. Formalactose
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Formula of haloform is_________________?
A. Hcox
B. Cx4
C. Chx3
D. Ch3x
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Oxidation of primary alcohol gives________________?
A. Ketone
B. Aldehyde
C. Alkene then – cooh
D. Ester
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Ncleophilic addition reactions are catalysed__________________?
A. Acid
B. Base
C. Both a and b
D. None
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Acetal on acid hydrolysis generates__________________?
A. Alcohol
B. Ketone
C. Both a & b
D. None of the above
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Tetrahydroborate ion is the source of_______________?
A. Proton
B. H+
C. Both a & amp; b
D. H-
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Dry distillation of calcium acetate results in the formation of_________________?
A. Formaldehyde
B. Acetaldehyde
C. Methane
D. Acetone
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Cannizaros reaction takes place through the transfer of ____________________ from complex anion?
A. Hydrogen ion
B. Hydride ion
C. Oxide ion
D. Methoxide ion
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Iodoform test can be used to distinguish between_________________?
A. Ethanol and methanol
B. Acetaldehyde and methanal
C. Acetone and diethyl ketone
D. All of the above
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Word of the Day
25 Jul
January
a preference or special liking for something; a bias in favour of something.
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