state gov Rajasthan Animal Attendant (पशु परिचर) Mock Test 2023-24 General Science Chemistry Chemical Reaction
Which of the following is a combination reaction?
(i) ZnCO3 (s) → ZnO (s) + CO2 (g)
(ii) Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g)
(iii) 2KBr (aq) + BaI2 (aq) → 2KI (aq) + BaBr2 (s)
(iv) H2 (g) + Cl2 (g) → 2 HCl (g)
1
(ii)
2
(iv)
3
(i)
4
(iii)
5
Question Not Attempted