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Select and write the correct alternative from the choices given below: (i) The reaction of a…
Select and write the correct alternative from the choices given below:
(i) The reaction of a primary amine with chloroform and ethanolic $\text{KOH}$ is called:
(a) Carbylamine reaction
(b) Kolbe’s reaction
(c) Reimer-Tiemann reaction
(d) Wurtz-Fittig reaction
(ii) Which one of the following statements is TRUE for the Galvanic cell?
(a) Electrons flow from copper electrode to zinc electrode.
(b) Current flows from zinc electrode to copper electrode.
(c) Cations move towards copper electrode.
(d) Cations move towards zinc electrode.
(iii) Which one of the following compounds is diamagnetic and colourless?
(a) $\text{K}_2\text{Cr}_2\text{O}_7$
(b) $\text{ZnSO}_4$
(c) $\text{KMnO}_4$
(d) $\text{Cr}_2(\text{SO}_4)_3$
(iv) For a first order reaction, the half-life period ($t_{1/2}$) is:
(a) proportional to the initial concentration.
(b) inversely proportional to the initial concentration.
(c) proportional to the square root of the initial concentration.
(d) independent of the initial concentration.
Answer
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From ISC 2023 Chemistry Paper 1, question 1(B).