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प्रश्न
Which among the following change is exothermic or endothermic in nature?
Dissolution of sodium hydroxide in water
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उत्तर
Exothermic
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संबंधित प्रश्न
Differentiate between:
Reactants and products.
Balance the following equation. Also name the products formed.
`H_2O_2 → H_2O +O_2`
Write a balanced molecular equation for the following word equation:
\[\ce{Calcium + oxygen->Calcium oxide}\]
Write a balanced molecular equation for the following word equation:
\[\ce{Zinc + sulphuric acid->Zinc sulphate + hydrogen}\]
Write a balanced molecular equation for the following word equation:
\[\ce{Lead nitrate + sodium chloride->Sodium nitrate + lead chloride}\]
Balance the following equation:
\[\ce{Al + H2O->Al2O3 + H2}\]
Balance the following equation:
\[\ce{FeCl3 + NaOH->NaCl + Fe(OH)3}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{Fe2O3 + 2H2->2Fe + 3H2O}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{ZnO + 3NaOH->Na2ZnO2 + H2O}\]\
Balance the following important equation:
Na2CO3 + HCl → NaCl + H2O + CO2
Balance the following important equation:
MnO2 + HCl → MnCl2 + H2O + Cl2
Balance the following important equation:
NH3 + O2 → N2 + H2O (burning of NH3)
Balance the following important equation:
Ca(HCO3)2 + HNO3 → Ca(NO3)2 + H2O + CO2
Balance the following important equation:
C + H2SO4 (conc.) → CO2 + H2O + SO2
Which of the following is true for an unbalanced chemical equation?
A chemical reaction does not involve:
In which of the following chemical equations, the abbreviations represent the correct states of the reactants and products involved at reaction temperature?
Write a balanced chemical equation of the following reaction and also classify them.
Iron (III) oxide on heating with carbon monoxide gas reacts to form solid iron and liberates carbon dioxide gas.
Complete the co-relation:
CuI2 : Brown : : AgCl : ______
