Q40.The correct sequence of thermal stability of the following carbonates is: (1) BaCO3 < CaCO3 < SrCO3 < MgCO3 (2) MgCO3 < CaCO3 < SrCO3 < BaCO3 (3) BaCO3 < SrCO3 < CaCO3 < MgCO3 (4) MgCO3 < SrCO3 < CaCO3 < BaCO3
What This Question Tests
This question assesses the trend of thermal stability of Group 2 metal carbonates, which increases down the group due to decreasing polarizing power of larger cations.
Concepts Tested
📚 NCERT Sections This Tests
2.1 — Arrange The Following Metals In The Order In Which They Displace Each Other
Chemistry Class 11 · Chapter 2
2.1 Arrange the following metals in the order in which they displace each other from the solution of their salts. Al, Cu, Fe, Mg and Zn.
2.2 — Given The Standard Electrode Potentials,
Chemistry Class 11 · Chapter 2
2.2 Given the standard electrode potentials, K+/K = –2.93V, Ag+/Ag = 0.80V, Hg2+/Hg = 0.79V Mg2+/Mg = –2.37 V, Cr3+/Cr = – 0.74V Arrange these metals in their increasing order of reducing power.
4.11 — Explain Giving Reasons:
Chemistry Class 11 · Chapter 4
4.11 Explain giving reasons: (i) Transition metals and many of their compounds show paramagnetic behaviour. (ii) The enthalpies of atomisation of the transition metals are high. (iii) The transition metals generally form coloured compounds. (iv) Transition metals and their many compounds act as good catalyst.
📋 Question Details
- Chapter
- s-block Elements
- Topic
- Thermal stability of carbonates
- Year
- 2019
- Shift
- 12 Apr Shift 1
- Q Number
- Q40
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 10: The s-Block Elements
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