Chemistry
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May 28, 2022
a. Narrow spectrum antibiotic b. Broad spectrum analgestic c. Broad spectrum antibiotic d. Broad spectrum antibacterial Ans. c (16)
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May 28, 2022
a. Streptomycin b. Penicillin c. Chloramphenicol d. Tetracylin Ans. b (11)
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May 28, 2022
a. Tetracycline b. Chloromycetin c. Penicillin d. None of these Ans. c (7)
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May 28, 2022
a. Chloroxylenol and Bithionol b. Chloroxylenol and Terpineol c. Phenol and lodine d. Terpineol and Bithionol Ans. b (8)
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May 28, 2022
a. Methyl salicylic acid b. Acetyl salicylic acid c. Acetyl salicylate d. Methyl salicylate Ans. b (10)
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May 28, 2022
NaNO 2 in dilute HCI followed by addition to an alkaline solution of β – naphthol is Ans. c ...
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May 28, 2022
Ans. c (5)
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May 28, 2022
a. Methyl orange b. Methyl red c. Phenolphthalein d. All of these Ans. a (14)
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May 28, 2022
a. Dechlormethane solution of β – naphthol b. Acidic solution of β – napthol c. Neutral solution of β – ...
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May 28, 2022
p – hpdrozxy azo benzene β – napthyl azo benzene p – amino azo benzene p – N, N dimethyl...
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May 28, 2022
a. Benzaldehyde and dimethyl aniline b. Carbonyl chloride and dimethyl aniline c. Benzene diazonium chloride with dimethyl aniline d. None...
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May 28, 2022
a. – N = N – b. – NO c. -NO 2 d. -NH 2 Ans. d (12)
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May 28, 2022
a. Cotton dyeing b. Printing c. Painting d. Chromium lakes for wood dyeing Ans. c (10)
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May 28, 2022
a. Martius yellow b. Alizarin c. Phenolphthalein d. Orange I Ans. b (7)
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May 28, 2022
a. Indigo was extracted in India from plants of the Indigo ferra group b. The chemical structure of Indigo was...
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May 28, 2022
a. Phthalic anhydride and phenol b. Phthalic anhydride and resorcinol c. Succinic acid and resorcinol d. Phthalic anhyride and catechol...
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May 28, 2022
a. Organic dye b. Organic polymer c. Detergent d. Pesticide Ans. a (9)
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May 28, 2022
a. Copper nitrate b. Gold chloride c. Silver nitrate d. Copper sulphate Ans. c (15)
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May 28, 2022
a. Vat dyes b. Disperse dyes c. Triphenyl methane dye d. Azo dyes Ans. a (15)
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May 28, 2022
a. Orange – I b. Phenolphthalein c. Malachite green d. Methylene blue Ans. a (10)
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May 28, 2022
a. Methyl red b. Congo red c. Malachite green d. Methyle orange Ans. c (9)
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May 28, 2022
a. Alizarin b. Basic acid c. Methylene blue d. Phenolphthaein Ans. a (12)
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May 23, 2022
a. Ionic solids b. Molecular solids c. Amorphous solids d. Liquids Ans. a Explanation : Point defect arises because of...
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May 23, 2022
a. AgBr b. AgCl c. KBr d. ZnS Ans. c Explanation : KBr exhibits Schottky defect and not Frenkl defect....
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May 23, 2022
a. Metal excess defect b. Metal deficiency defect c. Displacement defect d. Impurity defect Ans. b Explanation : Metal deficiency...
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May 23, 2022
a. 2 b. 1 c. 3 d. 5 Ans. d (5)
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May 23, 2022
a. Disloction defect b. Schottky defect c. Frenkel defect d. Electronic defect Ans. d Explanation : When electron rich or...
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May 23, 2022
a. p-type semiconductor b. n-type semiconductor c. Intrinsic semiconductor d. Insulator Ans. b (25)
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May 23, 2022
a. Metallic conductor b. Insulator c. n- type semiconductor d. p-type semiconductor Ans. c Explanation : Excess of one valence...
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May 23, 2022
a. Frenkel defect b. Schottky defect c. Non-stoichiometric defect d. Simple intertitial defect Ans. a Explanation : Frankel defect is...
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May 23, 2022
a. Frenkel defect b. Schottky defect c. Metal deficiency defect d. Metal excess defect Ans. d Explanation : In metal...
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May 23, 2022
a. Brass is an interstitial alloy, while steel is a substitutional alloy, while steel is a substitutinal b. Brass is...
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May 23, 2022
Ag+ << Br– . The AgBr crystal should have the following characteristics a. Defectless (perfect) crystal b. Schottky defect only...
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May 23, 2022
a. Softer b. less tensile c. less malleable d. more ductile Ans. b Explanation : On adding non-metal the metal...
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May 23, 2022
a. Establishing thermal equilibrium b. Having tendency to diffuse c. Contributing to scattering d. Introducing new electronic energy levels Ans....
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May 23, 2022
a. NaCl b. KCl c. CsCl d. All of these Ans. d Explanation : Schottky defects occurs in highly ionic...
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May 23, 2022
a. Frenkel defect b. Metal excess defect c. Metal deficiency generally defect d. Schottky defect Ans. b (9)
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May 23, 2022
a. Positive ions and negative ions are of different size b. Positive ions and negative ions are of same size...
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May 23, 2022
Poly – β – hydroxybutyrate – co – β hydroxyvalerate is (PHBV) is a copolymer of a. 3 – hydroxbutanoic...