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प्रश्न
What are reactants? Explain with the help of example.
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उत्तर
- The substances taking part in chemical reaction are called reactants.
- E.g. Formation of carbon dioxide gas by combustion of coal in air is a chemical reaction. In this reaction, coal (carbon) and oxygen (from air) are the reactants while carbon dioxide is the product.
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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:
Carbon disulphide burns in air to give carbon dioxide and sulphur dioxide.
Correct and balance the following equation:
N + H 
NH3
Balance the given equation:
NH3 + CuO 
Cu +N2 +H2O
Rewrite the following information in the form of a balanced chemical equation:
Magnesium burns in carbon dioxide to form magnesium oxide and carbon.
Write a balanced chemical equation for the process of photosynthesis giving the physical states of all the substances involved and the conditions of the reaction.
What is meant by chemical reaction? Explain with the help of an example.
State one characteristic of the chemical reaction which takes place when quicklime is treated with water
Give one example of an endothermic reaction.
One of the following is an exothermic reaction. This is:
(a) electrolysis of water
(b) conversion of limestone into quicklime
(c) process of respiration
(d) process of photosynthesis
When metal X is treated with a dilute acid Y, then a gas Z is evolved which burns readily by making a little explosion.
(a) Name any two metals which can behave like metal X.
(b) Name any two acids which can behave like acid Y.
(c) Name the gas Z.
(d) Is the gas Z lighter than or heavier than air?
(e) Is the reaction between metal X and dilute acid Y, exothermic or endothermic?
(f) By taking a specific example of metal X and dilute acid Y, write a balanced chemical equation for the reaction which takes place. Also indicate physical states of all the reactants and products.
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Write balanced chemical equation with state symbols for the following reaction:
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Name the type of chemical reaction shown by the following equation:
2Mg+ O2 → 2MgO
Name the type of chemical reaction shown by the following equation:
Fe + CuSO4 → FeSO4 +Cu
What is a chemical equation?
Write your observation for the following chemical reaction and name the product formed :
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Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2 ↑
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Zn + KOH → K2ZnO2 + H2
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H2O + Cl2 → HCl + O2
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State the law which this equation satisfies.
Choose the correct answer from the options given below.
The formula of sodium carbonate is Na2CO3 and that of calcium hydrogen carbonate is
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silver nitrate → silver + nitrogen dioxide + oxygen
Identify the type of reaction taking place of the following case and write the balanced chemical equation of the reaction:
Zinc reacts with silver nitrate to produce zinc nitrate and silver.
Write word equation for the following molecular equation:
\[\ce{H2 [g] + Cl2 [g] ->[sunlight] 2HCl}\]
Word equation:
State which form of energy is utilised in the above chemical reaction.
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Heat energy
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Zn + 2HC1→ ZnCl2 + H2
Give word equation for the following chemical reaction and give the names of the product formed.
NH3 + HCl→ NH4Cl
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NaCl + AgNo3 → AgCU ↓ + NaN03
Balance the following simple equation:
Al + O2 → Al2O3
Balance the following simple equation:
H2 + Cl2 → HCl
Balance the following simple equation:
Zn + NaOH → Na2ZnO2 + H2
Write a balanced equation for the following word equation:
Potassium nitrate → Potassium nitrite + Oxygen
Writing a chemical reaction in brief by using chemical formulae is called as _______.
What is a product in a chemical equation?
