For the reaction:
Fe₃O₄ (s) + Al (s) → Fe (s) + Al₂O₃ (s)
Which of the following statements about the reaction are correct?

1. a, c
2. a, b
3. b, c
4. c, d

The correct statement(s) in the balanced equation is(are):

a. H₂S is oxidised.
b. Cl₂ is reduced.
c. H₂S is reduced.
d. Cl₂ is oxidised.

1. a, b
2. b, c
3. c, d
4. a, d

Identify the correct statements regarding the given reaction:

${\mathrm{P}}_4+3{\mathrm{OH}}^{-}+3{\mathrm{H}}_2\mathrm{O}\to {\mathrm{PH}}_3+3{\mathrm{H}}_2{\mathrm{PO}}_2^{-}$

1. (a, b)

2. (b, c)

3. (c, d)

4. (a, d)

Which of the following statement(s) is/are correct regarding the given reaction?

$\mathrm{Zn}+2\mathrm{HCl}\to {\mathrm{ZnCl}}_2+{\mathrm{H}}_2$

(a) Zinc is acting as an oxidant

(b) Chlorine is acting as a reductant

(c) Hydrogen ion is acting as an oxidant

(d) Zinc is acting as a reductant

Options:

1. (a) &  (b)

2. (b) & (c)

3. (c) & (d)

4. (a) & (d)

Which of the following statements are not true about the following decomposition reaction?

$2{\mathrm{KClO}}_3\to 2\mathrm{KCl}+3{\mathrm{O}}_2$

The correct choice from the above is:

1. a, b and d

2. b, c and d

3. b, d and a

4. None of the above