Question

Match the correct pair: Column A Column B (i) Glycogen (a) Picric acid
(ii) Sodium benzoate (b) Secondary valency 6
(iii) 2,4,6-trinitrophenol (c) Food preservative
(iv) \(K_4[Fe(CN)_6]\) (d) Half order
(v) Rate = \(K[A]^{3/2}[B]^{-1}\) (e) Animal starch

Hint:

Remember that 1 is the only natural number that is neither prime nor composite. Every other natural number falls into one of those two categories.

Answer 1

Explanation of Each Pair:


Glycogen → Animal starch (e)
Glycogen is a polysaccharide that stores energy in animals, hence called animal starch.

Sodium benzoate → Food preservative (c)
Widely used to preserve food and beverages due to antimicrobial properties.

2,4,6-trinitrophenol → Picric acid (a)
The chemical name of picric acid is 2,4,6-trinitrophenol.

\(K_4[Fe(CN)_6]\) → Secondary valency 6 (b)
In coordination compounds, iron has coordination number (secondary valency) 6.

Rate = \(K[A]^{3/2}[B]^{-1}\) → Half order (d)
Fractional powers indicate fractional order reactions; here overall order is fractional (includes half-order behavior).
Final Matching:
\[ \boxed{(i)-(e),\ (ii)-(c),\ (iii)-(a),\ (iv)-(b),\ (v)-(d)} \]