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Fill in the blanks by choosing the appropriate word/words from those given in the brackets…

Chemistry202020 marksShort answer
(a)[4.0]
Fill in the blanks by choosing the appropriate word/words from those given in the brackets: (iodoform, volume, mass, haloform, gram equivalent, chloroform, carbylamine, $sp^3d^2$, high, coke, $d^2sp^3$, low, gram mole, carbon monoxide) (i) Equivalent conductivity is the conducting power of all the ions furnished by one ___________ of an electrolyte present in a definite ________ of the solution. (ii) Bleaching powder, on treatment with ethanol or acetone gives _______. This is an example of _________ reaction. (iii) Outer orbital complexes involve ________ hybridization and are _______ spin complexes. (iv) Zinc oxide is reduced by _________ at $1673\text{ K}$ to form zinc and __________.
(b)[4.0]
Select the correct alternative from the choices given: (i) The packing efficiency of simple cubic structure, body centered cubic structure and face centered cubic structure respectively is: (1) $52\cdot4\%$, $74\%$, $68\%$ (2) $74\%$, $68\%$, $52\cdot4\%$ (3) $52\cdot4\%$, $68\%$, $74\%$ (4) $68\%$, $74\%$, $52\cdot4\%$ (ii) When acetone is treated with Grignard’s reagent, followed by hydrolysis, the product formed is: (1) Secondary alcohol (2) Tertiary alcohol (3) Primary alcohol (4) Aldehyde (iii) Which of the following electrolytes is least effective in causing flocculation of positively charged ferric hydroxide sol? (1) $\text{K}_3[\text{Fe}(\text{CN})_6]$ (2) $\text{K}_2\text{CrO}_4$ (3) $\text{K}_4[\text{Fe}(\text{CN})_6]$ (4) $\text{KBr}$ (iv) On heating an aliphatic primary amine with chloroform and alcoholic potassium hydroxide, the organic compound formed is an: (1) Alkyl isocyanide (2) Alkanol (3) Alkanal (4) Alkyl cyanide
(c)[4.0]
Match the following:
Column A
  • (i)Silicon and phosphorous
  • (ii)Iodoform test
  • (iii)Arrhenius equation
  • (iv)Distorted octahedral structure
Column B
  • (a)Acetaldehyde
  • (b)Xenon hexafluoride
  • (c)n-type of semiconductors
  • (d)Frequency factor
(d)[8.0]
Answer the following questions: (i) What is the common name of the polymer obtained by the polymerization of caprolactam? Is it addition polymer or condensation polymer? (ii) Why $\text{Zn}^{2+}$ ions are colourless while $\text{Ni}^{2+}$ ions are green and $\text{Cu}^{2+}$ ions are blue in colour? (iii) The molar conductivity of $\text{NaCl}$, $\text{CH}_3\text{COONa}$ and $\text{HCl}$ at infinite dilution is $126\cdot45$, $91\cdot0$ and $426\cdot16\text{ ohm}^{-1}\text{ cm}^2\text{ mol}^{-1}$ respectively. Calculate the molar conductivity ($\lambda_m^\infty$) for $\text{CH}_3\text{COOH}$ at infinite dilution. (iv) Identify the compounds A, B, C and D. $\text{C}_6\text{H}_5\text{COOH} \xrightarrow{\text{SOCl}_2} \text{A} \xrightarrow{\text{NH}_3} \text{B} \xrightarrow{\text{Br}_2 / \text{KOH}} \text{C} \xrightarrow[0 - 5^\circ\text{C}]{\text{NaNO}_2 + \text{HCl}} \text{D}$

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Solid State

From ISC 2020 Chemistry Paper 1, question 1.