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प्रश्न
What is meant by ‘reactants’ and ‘products’ in a chemical equation?
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उत्तर
Reactants: Substances taking part in a reaction separated by (+) sign on the left-hand side of the arrow are called reactants.
Products: Substances formed in the reaction are called products.
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संबंधित प्रश्न
Chemical equations are balanced to satisfy the law of ______.
Balance the following chemical equation :
Na20 + H20 → NaOH
Write the balanced chemical equation of the following reaction.
copper + nitric acid → copper nitrate + nitric oxide + water
What is thermit process?
Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.
Electrical energy
Give word equation for the following chemical reaction and give the names of the product formed.
Zn + 2HC1→ ZnCl2 + H2
Balance the following simple equation:
FeCl2 + Cl2 → FeCl3
CaCO3 + 2HCl[dil.] → CaCl2 + H2O + CO2 [g]
State the information not conveyed by the above chemical equation.
Which of the following is not a physical change?
Three beakers labelled as A, B and C each containing 25 mL of water were taken. A small amount of NaOH, anhydrous CuSO4 and NaCl were added to the beakers A, B and C respectively. It was observed that there was an increase in the temperature of the solutions contained in beakers A and B, whereas in case of beaker C, the temperature of the solution falls. Which one of the following statement(s) is(are) correct?
- In beakers A and B, exothermic process has occurred.
- In beakers A and B, endothermic process has occurred.
- In beaker C exothermic process has occurred.
- In beaker C endothermic process has occurred.
