Skip to content

Match the properties… (Class 12 Chemistry SQP 2023-24, Q6)

questionbuddy.in/q/cbse-12-chemistry-2023-24-sqp-q6-match-properties-elements-series-lowest

ChemistryCBSE Class 12 · Sample paper, session 2023-24 · 1 mark · MCQ

CBSE Class 12 Chemistry sample paper 2023-24: question 6

From the official CBSE sample question paper for 2023-24, section A, question 6, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q6 · 1 mark · MCQThe d- and f-Block Elements

Match the properties with the elements of 3d series:
(i) lowest enthalpy of atomisation (p) Sc
(ii) shows maximum number of oxidation states (q) Mn
(iii) transition metal that does not form coloured compounds (r) Zn
(s) Ti

  1. (A)(i) (r), (ii) (q), (iii) (p)
  2. (B)(i) (r), (ii) (s), (iii) (p)
  3. (C)(i) (p), (ii) (q), (iii) (r)
  4. (D)(i) (s), (ii) (r), (iii) (p)

Source: official sample paper from cbseacademic.nic.in (PDF). See it in the full Sample paper 2023-24.

Hints

Open one hint at a time and try again before the next.

Hint 1

Atomisation enthalpy depends on the number of unpaired electrons.

Hint 2

Which metal has a ion in its compounds?

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. Zn has no unpaired electrons, so its metallic bonding is weak and its enthalpy of atomisation is lowest: (i)–(r).

  2. Mn () shows +2 to +7, the maximum number of oxidation states: (ii)–(q). Sc³⁺ () compounds are colourless: (iii)–(p).

    1 mark

Answer: (A) (i)-(r), (ii)-(q), (iii)-(p)

Where the marks are

  • Gives the correct matching (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from The d- and f-Block Elements, one at a time, marked against the answer key and marking points.Back to the full paperSample paper 2023-24: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.