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प्रश्न
Balance the given chemical reaction as per the instructions below.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Write names of reactants and products of chemical reaction.
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उत्तर
Names of reactants: Sodium hydroxide and Sulphuric acid
Names of products: Sodium sulphate and water
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संबंधित प्रश्न
Balance the following chemical equation.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Complete and balance the following equation:
NaOH + .......... \[\ce{-> Na2SO4 + H2O}\]
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\[\ce{Al(OH)3 -> Al2O3 + H2O}\]
What is a chemical equation? Explain with the help of an example.
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Give one example of a chemical reaction characterised by a change in state.
Give one example of an endothermic reaction.
Which of the following does not involve a chemical reaction?
The chemical reaction between quicklime and water is characterised by ______.
A white precipitate can be obtained by adding dilute sulphuric acid to ______.
A colourless lead salt, when heated, produces a yellow residue and brown fumes.
- Name the lead salt.
- Name the brown fumes.
- Write a chemical equation of the reaction involved.
What is a chemical equation?
Write word equation for the following skeletal equation:
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Balance the following chemical equation :
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Write your observation for the following chemical reaction and name the product formed :
When water is added to quick lime?
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Balance the following equation:
NaHCO3 → Na2CO3 + H2O + CO2
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\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
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Match column A with column B.
| Column A | Column B |
| (a) Blue salt changes to white and then black | (i) Ammonium dichromate |
| (b) Orange coloured compound changes to green. | (ii) Iodine |
| (c) Red compound changes to brown and then yellow. | (iii) Zinc Nitrate |
| (d) White to yellow when hot and white when cold. | (iv) Copper sulphate |
| (e) Violet solid changes to violet vapours. | (v) Red Lead |
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.
Answer the following question.
What is observed when 2 mL of dilute hydrochloric acid is added to 1 g of sodium carbonate taken in a clean and dry test tube? Write a chemical equation for the reaction involved.
A chemical reaction is generally accompanied by certain external indications or characteristics. These include – change of – (a) colour (b) state (c) smell (d) evolution of gas (e) formation of precipitate (f) evolution or absorption of heat. With reference to change of colour – state the change in colour seen when the following are heated – lead [IV] oxide.
Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.
Heat energy
Give word equation for the following chemical reaction and give the names of the product formed.
\[\ce{CuO + H2SO4 -> CuSO4 + H2O}\]
Balance the following simple equation:
ZnS + O2 → ZnO + SO2
Balance the following simple equation:
Fe + Cl2 → FeCl3
Balance the following simple equation:
CO2 + C → CO
Balance the following simple equation:
K + H2O → KOH + H2
Balance the following simple equation:
Zn + HCl → ZnCl2 + H2
Balance the following simple equation:
KBr + Cl2 → KCl + Br2
Balance the following simple equation:
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