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Which of the Following Can Be Decomposed by the Action of Light? (A) Nacl (B) Kcl (C) Agcl (D) Cucl - Science

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प्रश्न

Which of the following can be decomposed by the action of light?
(a) NaCl
(b) KCl
(c) AgCl
(d) CuCl

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उत्तर

(c) AgCl

The chemical reaction is given as follows:
2AgCl (s) → 2Ag (s) + Cl2 (g)

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: Chemical Reactions and Equations - Exercise 2 [पृष्ठ ४८]

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लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 1 Chemical Reactions and Equations
Exercise 2 | Q 55 | पृष्ठ ४८

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्‍न

What type of reaction is represented by the digestion of food in our body?


State an important use of decomposition reactions.


What is the colour of ferrous sulphate crystals? How does this colour change after heating?


State the change in colour observed in following case mentioning the reason:

Silver chloride is exposed to sunlight.


Two metals X and Y form the salts XSO4 and Y2SO4, respectively. The solution of salt XSO4 is blue in colour whereas that of Y2SO4 is colourless. When barium chloride solution is added to XSO4 solution, then a white precipitate Z is formed alongwith a salt which turns the solution green. And when barium chloride solution is added to Y2SO4 solution, then the same white precipitate  Z is formed alongwith colourless common salt solution.
(a) What could the metals X and Y be?
(b) Write the name and formula of salt XSO4.
(c) Write the name and formula of salt Y2SO4.
(d) What is the name and formula of white precipitate Z?
(e) Write the name and formula of the salt which turns the solution green in the first case.


A metal salt MX when exposed to light splits up to form metal M and a gas X2. Metal M is used in making ornaments whereas gas X2 is used in making bleaching powder. The salt MX is itself used in black and white photography.
(a) What do you think metal M is?
(b) What could be gas X2?
(c) Name the metal salt MX.
(d) Name any two salt solutions which on mixing together can produce a precipitate of salt MX.
(e) What type of chemical reaction takes place when salt MX is exposed to light? Write the equation of the reaction?


MULTIPLE CHOICE QUESTIONS

Tick the most appropriate answer.

Thermal decomposition of a substance is brought about with the help of

  1. reactants
  2. water
  3. wind
  4. heat

What do you mean by redox reaction ? Explain with the help of an example.


A student wants to study a decomposition reaction by taking ferrous sulphate crystals. Write two precautions he must observe while performing the experiment. 


Give a balanced equation for –

An electrolytic decomposition reaction involving a neutral liquid


Electrolysis is type of ______ reaction.


The following reaction is used for the preparation of oxygen gas in the laboratory:

\[\ce{2KClO3_{(s)} ->[Heat] 2KCl + 3O2_{(g)}}\]

Which of the following statement about the reaction is correct?


Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is:


Which of the following is an endothermic process?


Marble statues are corroded or stained rain water. Identify the main reason.


Balance the following chemical equation and identify the type of chemical reaction.

`"H"_2"O"_2("l") overset("U  V")(->) "H"_2"O"("l") + "O"_2("g")`


Complete the following reaction:

\[\ce{C_12H_22O11->[Heat]}\] ______ + ______.


A metal nitrate 'A' on heating gives a metal oxide along with evolution of a brown coloured gas 'B' and a colourless gas, which helps in burning. Aqueous solution of 'A' when reacted with potassium iodide forms a yellow precipitate.

  1. Identify 'A' and 'B'
  2. Name the types of the reactions involved in the above statement.

What is observed when silver chloride is exposed to sunlight? Give the type of reaction involved.


Write one equation for decomposition reactions where energy is supplied in the form of electricity.


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