Question

Match List I with List II and choose the correct answer from the codes given below \[ \begin{array}{c c c} List I & & List II A.\; NaNO_3 & & (i)\; Baking\; soda B.\; Na(NH_4)HPO_4 & & (ii)\; Chile\; saltpetre C.\; NaHCO_3 & & (iii)\; Microcosmic\; salt D.\; Na_2CO_3 \cdot 10H_2O & & (iv)\; Washing\; soda \end{array} \] Codes: {c c c c c} & A & B & C & D

• A. & (i) & (ii) & (iii) & (iv)
• B. & (ii) & (iii) & (i) & (iv)
• C. & (iii) & (i) & (ii) & (iv)
• D. & (iv) & (i) & (ii) & (iii)

Hint:

Common names to remember:
\(NaNO_3\) → Chile saltpetre
\(Na(NH_4)HPO_4\) → Microcosmic salt
\(NaHCO_3\) → Baking soda
\(Na_2CO_3 \cdot 10H_2O\) → Washing soda

Answer 1

The Correct Option is B

To solve this problem, we need to match each compound given in List I with its respective common name in List II. 

1. NaNO₃: This is known as "Chile saltpetre". It is a naturally occurring source of sodium nitrate found in the deserts of Chile and used primarily in fertilizers and explosives. Therefore, it matches with option (ii).
2. Na(NH₄)HPO₄: This compound is called "Microcosmic salt". It is used in analytical chemistry as a flux in the microanalysis of minerals and as a flame retardant. Hence, it corresponds to option (iii).
3. NaHCO₃: This is commonly known as "Baking soda". It is a widely used leavening agent in baking, as well as for its ability to neutralize acids and as a cleaning agent. So, it matches with option (i).
4. Na₂CO₃ · 10H₂O: This is referred to as "Washing soda". It is used in cleaning and laundry as a water softener. Therefore, it corresponds to option (iv).

Based on the above analysis, the correct matching of List I to List II is:

List I		List II
A. NaNO3		(ii) Chile saltpetre
B. Na(NH4)HPO4		(iii) Microcosmic salt
C. NaHCO3		(i) Baking soda
D. Na2CO3 · 10H2O		(iv) Washing soda

Therefore, the correct answer is: (ii), (iii), (i), (iv).