Question

Match the following and identify the correct option

A	\(CO(g)+H_2 (g)\)	I	\(Mg(HCO_3 )_2+ Ca(HCO_3 )_2\)
B	Temporary hardness of water	II	An electron deficient hydride
C	\(B_2H_6\)	III	Synthesis gas
D	\(H_2O_2\)	IV	Non-planar structure

• A. a-(iii) b-(i)c- (ii)d- (iv)
• B. a-(iii) b- (ii)c- (i)d- (iv)
• C. a-(iii)b- (iv)c- (ii)d- (i)
• D. a-(i)b- (iii)c- (ii)d- (iv)

Answer 1

The Correct Option is A

Let's solve the question by matching the given chemical entities with their correct descriptions:

1. Identify the pairings:
   • \(CO(g) + H_2 (g)\) is known as Synthesis gas or Syngas. It is a mixture of carbon monoxide (CO) and hydrogen (H₂), primarily used in the production of synthetic fuels and methanol.
   • Temporary hardness of water is caused by the presence of bicarbonate salts like \(Mg(HCO_3 )_2\) and \(Ca(HCO_3 )_2\). It can be removed by boiling the water, which precipitates out the bicarbonate compounds.
   • \(B_2H_6\) (Diborane) is an electron-deficient compound as it does not have enough electrons to form conventional 2-center, 2-electron (2c, 2e) bonds. It typically forms multicenter bonds to make up for this deficiency.
   • \(H_2O_2\) (Hydrogen Peroxide) has a non-planar structure. The molecule forms an open book structure with a dihedral angle.
2. Match the options:
   • A: \(CO(g) + H_2 (g)\) matches with III: Synthesis gas
   • B: Temporary hardness of water matches with I: \(Mg(HCO_3 )_2 + Ca(HCO_3 )_2\)
   • C: \(B_2H_6\) matches with II: An electron deficient hydride
   • D: \(H_2O_2\) matches with IV: Non-planar structure
3. Select the correct option:

The correct matching is a-(iii), b-(i), c-(ii), d-(iv), which corresponds to the given correct answer option:

a-(iii) b-(i)c- (ii)d- (iv)