Everyday Science MCQs

5120 MCQs  (Page 283 of 512)

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Which of the following compounds has the empirical formula CH2O and reacts with sodium hydroxide ?
A. Carbonic acid
B. Ethanol
C. Acetic acid
D. Methanoic acid
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Cannizzaros reaction is not given by__________________?
A. Formaldehyde
B. Acetaldehyde
C. Benzaldehyde
D. Trimethyl acetaldehyde
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Ketones are comparatively less reactive than aldehdye. It is due to_______________?
A. Alkyl groups are electron donating
B. Steric hindrance
C. Both a and b
D. None
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Which of the following is not a use of formaldehyde ?
A. In silvery mirror
B. In making medicine urotropine
C. In making throat lozenges
D. In making acetic acid
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Which of the following is not a use of acetaldehyde ?
A. Formation of phenolic resins
B. Formation of mirror
C. Antiseptic inhalant
D. Formation of throat lozenges
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Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________?
A. Nylon 66
B. Urotropine
C. Aniline formaldehyde plastic
D. Bakelite
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Which of the following will not give addition reaction with NaHSO3________________?
A. hcho
B. ch3cho
C. ch3-ch2-cho
D. none of the above
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The reaction of carboxylic acids with alcohols in presence of cone. H2SO4 is called _________________?
A. Esterification
B. Neutralization
C. Hydrolysis
D. Saponification
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Which of the following is not an amino acids_____________________?
A. Glumatic acid
B. Lactic acid
C. Aspartic acids
D. Glycine
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Which of the following reaction is not shown by ketones ?
A. reaction with hcn
B. reaction with nahso3
C. reaction with 2 4 dinitrophenyl hydrazine
D. reaction with fehling solution
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Word of the Day
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January
a preference or special liking for something; a bias in favour of something.
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