Question

(iii) Which reaction represents chemical composition?
(a) 2NaHCO - Na,CO, + H2O + CO2
(b) CaO + H2O → Ca (OH),
(c) Cuso, + Fe —→ FeSO. + Cu
(d) AgNO, + NaCl → AgCl + NaNO,
(iv) Which reaction represents chemical decomposition?
(a) 2KCIO, — 2KCI + 30,
(b) 4P + 50,- 2P,0,
(c) Zn + CuSO4
→ ZnSO4 + Cu
(d) NaOH + HCl → NaCl + H2O
(v) Which reaction does not take place?
(a) FeSO4 + Cu → CuSO4 + Fe
(b) Zn + 2HCl -ZnCl2 + H,
(c) Pb(NO3)2 + Mg -> Mg(NO3)2 + Pb
(d) ZnSO4 + Hg —— MgSO, + Zn​

Answer 1

Answer:

ருனனநுஉயௌறுவுநௌநுஐநைஉறநைஉநறைஉநௌநுஔநுநுநௌவௌநூஊவக்ஷுவௌதளுஔளௌளதுமதுஔநௌஉஔதௌஉதௌஆநைஆறதாதௌதளதளுதௌதுதளுதளௌஉதௌதறூநறௌநிநறிஐநயிநாநைநாதாநநாநநாஐதாஐதைதுதோஊஓஈஊஓதீதூநதைஓஐஈஓஐஓஉலௌகறயநுதௌதீஐஓஊமௌலமூலலிலிநயிநயி

Explanation:

ஞதாநௌநாழவுவௌவுவூவூவவறூ