H2SO4 + 2NaOH → Na2SO4 + 2H2O
Above equation is a:
(i) neutralization reaction
(ii) double displacement reaction
(iii) decomposition reaction
(iv) addition reaction
Identify the following reactions as endothermic or exothermic,
(i) 2NaHCO3 + energy → Na2CO3 + H2O + CO2
(ii) 2Mg + O2 → 2MgO + energy
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Correct balanced equation from the following reactions is:
In a double displacement reaction?
The reaction, 3MnO2(s) + 4AI(s) → 3Mn(l) + 2Al2O5(s) + Heat is an example of:
The reaction Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2 ↓ is classified as
Which of the statements about the reaction below are incorrect?
2PbO(s) + C(s) → 2Pb(s) + CO2 (g)
(i) Lead is getting reduced.
(ii) Carbon dioxide is getting oxidised.
(iii) Carbon is getting oxidised.
(iv) Lead oxide is getting reduced.
Fe2O3 + 2Al → Al2O3 + 2Fe
The above reaction is an example of a:
What happens when dilute hydrochloric acid is added to iron fillings? Tick the correct answer.
Two different atoms or groups of atoms (ions) are exchanged in ______ reactions.
When lead nitrate is heated, it breaks down into lead monoxide, nitrogen dioxide and oxygen.
2Pb(NO3)2 → 2PbO + 4NO2 + O2
The reaction is an example of:
Thermal decomposition of a substance is brought about with the help of
Aluminium can displace Zinc metal from the aqueous solution of zinc sulphate because of ______.
The reaction Pb(NO3)2 + 2NaI → 2NaNO3 + Pbl2 ↓ is classified as
A piece of granulated zinc was dropped into a copper sulphate solution. After some time, the colour of the solution changed from:
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