Advertisements
Advertisements
प्रश्न
Is Burning of natural gas an endothermic reaction or an exothermic reaction?
उत्तर
Burning of natural gas: Exothermic reaction
Burning of natural gas releases a huge amount of heat energy.
APPEARS IN
संबंधित प्रश्न
Balance the chemical equation.
\[\ce{HNO3 +Ca(OH)2 -> Ca(NO3)2 + H2O}\]
Translate the following statement into chemical equation and then balance the equation:
Phosphorus burns in oxygen to give phosphorus pentoxide.
Substitute formulae for names and balance the following equation:
Calcium carbonate reacts with hydrochloric acid to produce calcium chloride, water and carbon dioxide gas.
The chemical reaction between two substances is characterised by a change in colour from orange to green. These two substances are most likely to be:
(a) potassium dichromate solution and sulphur dioxide
(b) potassium permanganate solution and sulphur dioxide
(c) potassium permanganate solution and lemon juice
(d) potassium dichromate solution and carbon dioxide.
Balance the following equation:
Pb3O4 + HCl → PbCl2 + H2O + Cl2
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of salt formed.
Write word equation for the following molecular equation:
\[\ce{CuSO4 + 2NaOH -> Na2SO4 + Cu(OH)2↓}\]
Word equation:
State the colour of the products.
Balance the following simple equation:
FeCl2 + Cl2 → FeCl3
Write a balanced equation for the following word equation:
Potassium nitrate → Potassium nitrite + Oxygen
When aqueous solutions of potassium iodide and lead nitrate are mixed an insoluble substance separates out. The chemical equation for the reaction involved is:
