English

These consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:

Advertisements
Advertisements

Question

These consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:

Assertion: Silver bromide decomposition is used in black and white photography.

Reason: Light provides energy for this exothermic reaction.

Options

  • Both Assertion and Reason are true and Reason is the correct explanation of Assertion

  • Both Assertion and Reason are true and Reason is not the correct explanation of Assertion

  • Assertion is true but Reason is false

  • Assertion is False but Reason is true

MCQ
Advertisements

Solution

Assertion is true but Reason is false

shaalaa.com
  Is there an error in this question or solution?
2022-2023 (March) Sample

RELATED QUESTIONS

Taking into consideration the relationship in the first pair, complete the second pair

2H2 + O2 → 2H2O :Combination Reaction :: 2HgO → 2Hg + O2:_________


A solid substance P which is very hard is used in the construction of many buildings, especially flooring. When substance P is heated strongly, it decomposes to form another solid Q and a gas R is given out. Solid Q reacts with water with the release of a lot of heat to form a substance S. When gas R is passed into a clear solution of substance S, then a white precipitate of substance T is formed. The substance T has the same chemical composition as starting substance P.
(a) What is substance P? Write its common name as well as chemical formula.
(b) What is substance Q?
(c) What is gas R?
(d) What is substance S? What is its clear solution known as?
(e) What is substance T? Name any two natural forms in which substance T occurs in nature.


What type of chemical reaction is represented by the following equation?

X → Y + Z

 


What type of reaction is represented by the following equation?

NH4NO2 → N2 + 2H2O


When a green iron salt is heated strongly, its colour finally changes to brown and odour of burning sulphur is given out.
(a) Name the iron salt.
(b) Name the type of reaction that takes place during the heating of iron salt.
(c) Write a chemical equation for the reaction involved.


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


Complete the statement by filling in the blank with the correct word:

Decomposition of silver salts in the presence of sunlight is an example of _________.


Explain the reaction given in the figure.


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:


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×