Everyday Science MCQs

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Ethanal is prepared industrially by air oxidation of ethylene using palladium chloride as catalyst and _________ as promoter?
A. Pdcl2
B. Cu2cl2
C. Cucl2
D. Pbcl2
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Acetaldehyele cyanohydrin on acid hydrolysis yields___________________?
A. Tartaric acid
B. Propanoic acid
C. Lactic acid
D. Valeric acid
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Which one exhibits aldol condensation____________________?
A. Hcho
B. C6h5cho
C. Cl3ccho
D. Ch3coch3
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Which of the following is a symmetrical ketone___________________?
A. 3 – hexanone
B. Acetone
C. Butanone
D. 2-pentanone
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In base catalyzed reaction of carbonyl compound the catalyst___________________?
A. Increases the nucleophilic character of reagent
B. Increases electrophilic character of carbonyl compound
C. Acidic character of reagent
D. Both a and b
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The carbon atom of carbonyl group is__________________?
A. Sp hybridized
B. Sp2 hybridized
C. Cp3 hybridized
D. Dsp2 hybridized
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Formalin is ___________ solution of formaldehyde in water?
A. 10%
B. 20%
C. 40%
D. 60%
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Acetone reacts with HCN to form a cyanohydrin. It is an example of________________?
A. Electronphilic addition
B. Electrophilic substitution
C. Nucleophilic addition
D. Nucleophilic substitution
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Which of the following reactions may be assoclated with aldehyde and ketone ?
A. Nucleophile addition
B. Polymerization
C. Oxidation
D. All of the above
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Which of the following reagents will react with both aldehydes and ketones ?
A. Grignard reagent
B. Tollens reagent
C. Fehlings reagent
D. Benedicts reagent
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January
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