Group-A (MCQ)
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In titration of dil. HCl versus standard Na₂CO₃ solution, which of the following is the suitable indicator?
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A) Methyl yellow
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B) Methyl orange
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C) Phenolphthalein
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D) Litmus
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If the rate of reaction is independent of the initial concentration of the reactant, what order of reaction is it?
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A) Zero order reaction
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B) First order reaction
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C) Pseudo-first order reaction
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D) Second order reaction
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What is the nature of aqueous solution of CuSO₄?
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A) Alkaline
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B) Neutral
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C) Acidic
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D) Depends on concentration
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What is blister copper?
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A) An alloy of copper
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B) Pure copper
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C) Copper with 1-2% impurity
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D) Ore of copper
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A test tube contains heptahydrated zinc sulfate crystals. What are they commonly known as?
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A) Blue vitriol
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B) Oil of vitriol
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C) Green vitriol
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D) White vitriol
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Which of the following is the black oxide of copper?
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A) Cu(OH)₂
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B) CuFeS₂
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C) Cu₂O
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D) CuO
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Which of the following groups of compounds is a functional isomer of alcohol?
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A) Ether
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B) Ester
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C) Carboxylic acid
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D) Aldehyde
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If benzene diazonium salt is warmed with water, what major product will it form?
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A) Phenol
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B) Acetaldehyde
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C) Benzene
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D) Chlorobenzene
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How do you define Tollen’s reagent?
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A) Alkaline KMnO₄
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B) Ammoniacal silver nitrate
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C) Ammoniacal Cu₂Cl₂
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D) Ammoniacal copper chloride
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An alkyl halide ‘A’ reacts with Na in the presence of dry ether to form B. If the molecular formula of B is CH₄, what is A?
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A) CH₃Cl
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B) CH₃CH₂Cl
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C) CH₂Cl₂
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D) CHCl₃
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Which of the following drugs is used to lower the body temperature during the high fever?
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A) Paracetamol
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B) Novalgin
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C) Penicillin
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D) Diazepam
