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Write Down What You Understood from the Following Chemical Reaction.

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प्रश्न

Write down what you understood from the following chemical reaction.

AgNO3(aq) + NaCI(aq) → AgCI ↓ + NaNO3(aq)

संक्षेप में उत्तर
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उत्तर

i. AgNO3 and NaCl are reactants and AgCl and NaNO3 are products.
ii. Reactants and the product NaNO3 are in aqueous form.
iii. Product AgCl is formed in the form of precipitate.

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2018-2019 (March) Balbharati Model Question Paper Set 1

संबंधित प्रश्न

Balance the following chemical equation.

\[\ce{NaCl + AgNO3 -> AgCl + NaNO3}\]


2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube. When the contents are warmed, a gas evolves which is bubbled through a soap solution before testing. Write the equation of the chemical reaction involved and the test to detect the gas. Name the gas which will be evolved when the same metal reacts with dilute solution of a strong acid.


What is a chemical equation? Explain with the help of an example.


Write a balanced chemical equation with state symbols for the following reaction:

Sodium hydroxide solution reacts with hydrochloric acid solution to produce sodium chloride solution and water.


Give one example of a chemical reaction characterised by the formation of a precipitate.


State one characteristic of the chemical reaction which takes place when lemon juice is added gradually to the potassium permanganate solution.


State one characteristic of the chemical reaction which takes place when wax is burned in the form of a candle.


Why do we need to balance chemical equations?


Write your observation for the following chemical reaction and name the product formed :
When ammonium chloride is heated with sodium hydroxide.


Balance the following equation .

N2 + O2 → NO


Write your observation and name the product when zinc reacts with dilute hydrochloric acid.


(a) Give only one suitable chemical test to identify the following gases.

  1. Ammonia
  2. Sulphur dioxide
  3. Hydrogen Chloride
  4. Chlorine
  5. Carbon Dioxide
  6. Oxygen
  7. Hydrogen

(b) Select a basic gas mentioned in Q.1 (a). How is the basic nature suspected?

(c)Select acidic gases from the gases mentioned in Q.1 (a). How is the acidic nature suspected?

(d) State the gas responsible for bleaching action.

(e)Which gas turn blue cobalt chloride paper light pink?

 


Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.

Electrical energy


Balance the following simple equation:

Fe   +   Cl2  →  FeCl3 


Balance the following simple equation:

Zn  +   HCl  →   ZnCl2   +   H2 


Match the columns.

  Reactants Products Types of chemical reaction
1. MgH2 → Mg + H2 Endothermic
2. 2H2S + SO2 → 3S + 2H2O Oxidation
3. CaO + H2O → Ca(OH)2 + heat Exothermic
        Redox

Balance the given chemical reaction as per the instructions below.

\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]

Write names of reactants and products of chemical reaction.


Which of the following statements about the given reaction are correct?

`3"Fe"("s") + 4"H"_2"O"("g") -> "Fe"_3"O"_4("s") + 4"H"_2("g")`

  1.  Iron metal is getting oxidised
  2. Water is getting reduced
  3. Water is acting as reducing agent
  4.  Water is acting as oxidising agent

What is a reactant in a chemical equation?


Complete the following blank in the equation as indicated.

\[\ce{CaH2_{(s)} + 2H2O_{( aq)}-> Ca(OH)2_{(s)} + 2H2_{(g)}}\]

Molecules: 6.02 × 1023 + ______ `→` ______ + ______


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