Question

(i) Select the combination reaction
a. 2H2+O22H0
b. C O2 CO2
C Ca H20 Ca(OH)2
d. All of these
ii. Which of the following is not a thermal decomposition reaction?
a. CacOg CaO CO2
b. 2FesO4
Fe203+SO2+ SOg
c Pb(NO3)2 2PbO 4NO2 +O2
d. NaClaq) Na Cr
ii. The formation of polythene from ethane is an example of
a. Neutralisation reaction
b. Polymerisation reaction
C.Displacement reaction
d. Decomposition reaction
iv. Which of the following elements undergoes corrosion?
a. Gold
b. Silver
c Platinum
d. All of these
v. The chemical reaction which produces heat is
a. endothermic reaction
b. photochemical reaction
C. exothermic reaction
d. oxidation reaction​

Answer 1

Answer:

(i) Option d is correct

All of these

(ii) Option d is correct

NaCl ------> Na +Cl2

(iii) Option d is correct

Decomposition reaction

(iv) Option b is correct

Silver

(v) Option c is correct

exothermic reaction

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Answer 2

Answer:

The above answer is correct!