$$ \text { Match List-I with List-II } $$

List-I (Reaction)		List-II (Enzyme)
A.	Hydrolysis of starch to maltose	I	Diastase
B	Chalcogen	II	Pepsin
C	Hydrolysis of sucrose to glucose and fructose	III	Invertase
D	Glucose to ethanol	IV	Zymase

The correct answer is

The following data is obtained for coagulating a positively charged sol in 2 hours

Conc. of $\mathrm{Cl}^{-}$in $\mathrm{mol} \mathrm{L}^{-1}$	Result
$$ 5 \times 10^{-5} $$	Sol not precipitated
$$ 6 \times 10^{-5} $$	Sol not precipitated
$$ 7 \times 10^{-5} $$	Sol precipitated
$$ 8 \times 10^{-5} $$	Sol precipitated
$$ 1 \times 10^{-4} $$	Sol precipitated

What is the coagulating value of electrolyte for this sol?

In which of the following metals extraction, impurities are removed as slag?

i. Al

ii. Fe

iii. Cu

iv. Zn

The correct option is

Two of the products formed by the reaction of ' $X$ with HCl are gases. What is ' $X$ '?