chemistry MCQs – Page 45

Practise multiple-choice questions from chemistry for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemistry Mcqs
881. Shielding effect across the period_________________?
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A. Decreases

B. Increases

C. Can not be predicted

D. Remains constant
882. Which of the following is not a fatty acid ?
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A. Phthalic acid

B. Propanoic acid

C. Acetic acid

D. Butanoic acid

883. Phosphoric acid is a weak acid and its basicity is____________________?
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A. 3

B. 2

C. zero

D. 1

884. Which of the following is not an amino acids_____________________?
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A. glumatic acid

B. aspartic acids

C. glycine

D. lactic acid
885. An element has electronic conviguration 1s2 2s2 2p2. It belongs to__________________?
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A. Group IV-A

B. Group VI-A

C. Group VII-A

D. Group II-A

886. Which of the following has orange flavour__________________?
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A. isobutyl formate

B. ethyl butyrate

C. amyl lactate

D. octyl acetate
887. Which of the following shows inert pair effect ?
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A. tin

B. boron

C. carbon

D. silicon

888. Seventh period contains _________________ normal elements ?
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A. 4

B. 8

C. 6

D. 2
889. The hydrolysis of Benzenetrizonide will yield three moles of____________________?
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A. Benzaldehyde

B. Glyoxal

C. Glycol

D. Glyoxime

890. Ethanal is prepared industrially by air oxidation of ethylene using palladium chloride as catalyst and _________ as promoter?
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A. PdCl2

B. CuCl2

C. Cu2Cl2

D. PbCl2

891. Keeping in view the size of atom which order is correct one ?
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A. Ba > Mg

B. C1 > I

C. Mg > Sr

D. Lu > Ce

892. Energy required to form transition state is called _________________?
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A. V

B. Ea

C. K.E

D. P.E

893. Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________?
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A. urotropine

B. Bakelite

C. Nylon 66

D. Aniline formaldehyde plastic

894. Which one of the following methods will not give benzene ?
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A. Hydrolysis of benzene sulphonic acid with super heated steam

B. Chlorobenzene with NaOH at 360C & 150atm.

C. Distilling phenol with Zn dust

D. Heating sod. Salt of Benzoic acid with soda lime

895. Which is fused cyclic aromatic compound _____________________?
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A. biphenyl

B. naphthalene

C. diphenyl methane

D. diphenyl amine

896. What is the molecular formula of Benzenetriozonide ?
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A. C6H6O9

B. C6H5O9

C. C6H6O6

D. C6H5O8

897. The chemical composition of cinnabar is__________________?
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A. FeS

B. PbS

C. ZnS

D. HgS
898. Which of the following ion is stable in aqueous solution ?
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A. All are stable

B. H+

C. H-

D. Cl-
899. Aldehyde and ketone have same general formula for homologous series_________________?
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A. CnH2nO

B. CnH2nOn+1

C. CnH2nO2n

D. CnH2n

900. Downs cell is used to prepare_________________?
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A. Sodium metal

B. Sodium hydroxide

C. Sodium bicarbonate

D. Sodium carbonate