Chemical Reactions and Equations Quiz 2

Question 1

Ammonia is formed by the reaction of gases &hellip;&hellip;&hellip;&hellip;&hellip;&hellip;&hellip;

Accepted Answer

$N_2\text{ and }H_2$

Answer

$H_2\text{ and }O_2$

Answer

$N_2\text{ and }O_2$

Answer

$H_2\text{ and }He$

Question 2

The reaction $Zn+H_2SO_4\longrightarrow ZnSO_4+H_2$ represents &hellip;&hellip;..&hellip;. reaction.

Accepted Answer

displacement

Answer

combination

Answer

double displacement

Answer

decomposition

Question 3

A solution of potassium iodide reacts with lead nitrate to give &hellip;&hellip;&hellip;&hellip;

Accepted Answer

$KNO_3$ & $PbI_2$

Answer

$KNO_3$

Answer

$PbI_2$

Answer

PbO

Question 4

A solution of sodium carbonate reacts with $Ca(OH)_2$ to give &hellip;&hellip;&hellip;&hellip;&hellip;

Accepted Answer

$CaCO_3$ & NaOH

Answer

$CaCO_3$

Answer

NaOH

Answer

CaO

Question 5

Which reaction is a reversible reaction?

Accepted Answer

$PCl_5\rightleftharpoons PCl_3+Cl_2$

Answer

$S+O_2\longrightarrow SO_2$

Answer

$2Na+Cl_2\longrightarrow2NaCl$

Answer

$CaCO_3\longrightarrow CaO+CO_2$

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