Medium
Write two observations for the following chemical reaction:
$(a)$ Dilute sulphuric acid is poured over zinc granules.
$(a)$ Dilute sulphuric acid is poured over zinc granules.
(N/A) The chemical reaction is: $Zn(s) + H_2SO_4(aq) \longrightarrow ZnSO_4(aq) + H_2(g) \uparrow$
Observations:
$(i)$ Evolution of hydrogen gas bubbles is observed.
$(ii)$ The reaction is exothermic,so the temperature of the reaction vessel increases.
Observations:
$(i)$ Evolution of hydrogen gas bubbles is observed.
$(ii)$ The reaction is exothermic,so the temperature of the reaction vessel increases.
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State the reason for the following:
$(a)$ Potato chips manufacturers usually flush bags of chips with nitrogen gas.
$(b)$ Iron articles lose their shine gradually.
$(c)$ Foods should be kept in airtight containers.
$(a)$ Potato chips manufacturers usually flush bags of chips with nitrogen gas.
$(b)$ Iron articles lose their shine gradually.
$(c)$ Foods should be kept in airtight containers.
Medium
View SolutionWrite a balanced chemical equation for each of the following reactions and also classify them.
$(a)$ Iron $(III)$ oxide on heating with carbon monoxide gas reacts to form solid iron and liberates carbon dioxide gas.
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$(a)$ Iron $(III)$ oxide on heating with carbon monoxide gas reacts to form solid iron and liberates carbon dioxide gas.
$(b)$ Hydrogen sulphide gas reacts with oxygen gas to form solid sulphur and liquid water.
Medium
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$(a)$ Lead nitrate is strongly heated in a hard glass test tube.
$(a)$ Lead nitrate is strongly heated in a hard glass test tube.
Medium
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$(a)$ Hydrated copper sulphate is heated.
Also,write the chemical equation for the reaction.
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Also,write the chemical equation for the reaction.
Medium
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Medium
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