Match the following and identify the correct option.(a) CO(g) + H₂(g)(i) Mg(HCO₃)₂ + Ca(HCO₃)₂(b) Te

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Question

Match the following and identify the correct option.(a) CO(g) + H₂(g)(i) Mg(HCO₃)₂ + Ca(HCO₃)₂(b) Temporary hardness of water(ii) An electron deficient hydride(c) B₂H₆(iii) Synthesis gas(d) H₂O₂(iv) Non-planar structure

Accepted Answer

Correct Answer: D — (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)Step-by-step Solution:(a) CO(g) + H₂(g) → (iii) Synthesis gas (syngas): A mixture of carbon monoxide and hydrogen is known as synthesis gas or water gas. It is used industrially for the synthesis of methanol and other chemicals (Fischer-Tropsch process).(b) Temporary hardness of water → (i) Mg(HCO₃)₂ + Ca(HCO₃)₂: Temporary hardness is caused by dissolved bicarbonates of calcium and magnesium. It can be removed by boiling (bicarbonates decompose to insoluble carbonates).(c) B₂H₆ (Diborane) → (ii) An electron deficient hydride: Diborane has only 12 valence electrons but requires 14 for conventional bonding. It forms 3-centre 2-electron bonds (banana bonds), making it electron deficient.(d) H₂O₂ → (iv) Non-planar structure: Hydrogen peroxide has a non-planar (skew book or open book) structure. The two O–H bonds are not in the same plane — the dihedral angle is about 111° in solid state and 119.5° in gas phase.Why other options are incorrect:Options A, B, and C all have incorrect pairings for one or more entries as shown in the analysis above.Key Concept: Syngas = CO + H₂. Temporary hardness — removed by boiling. B₂H₆ — electron deficient, forms 3c-2e bonds. H₂O₂ — non-planar structure, open book model.

Match the following and identify the correct option.(a) CO(g) + H₂(g)(i) Mg(HCO₃)₂ + Ca(HCO₃)₂(b) Temporary hardness of water(ii) An electron deficient hydride(c) B₂H₆(iii) Synthesis gas(d) H₂O₂(iv) Non-planar structure

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Match the following and identify the correct option.(a) CO(g) + H₂(g)(i) Mg(HCO₃)₂ + Ca(HCO₃)₂(b) Temporary hardness of water(ii) An electron deficient hydride(c) B₂H₆(iii) Synthesis gas(d) H₂O₂(iv) Non-planar structure

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