Assertion and Reason for Class 10 Science Chapter 1 Chemical Reactions and Equations- Here we will share Assertion and Reason for Class 10 Science Chapter 1 Chemical Reactions and Equations. if you are searching for Chemical Reactions and Equations Chapter 1 Assertion and Reason for class 10 then you are the right place. queryexpress gives you the best assertion and reason type questions and answers for your exminations.
Assertion and Reason for Class 10 Science Chapter 1 Chemical Reactions and Equations
The questions given here have two statements – Assertion (A) and Reason (R).
Now answer these questions by selecting the appropriate option given below:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Chemical Reactions and Equations Class 10 Assertion and Reason
Assertion: Magnesium ribbon burns in air and combines with oxygen to form magnesium oxide.
Reason: This is an example of a chemical change where magnesium form a new substance by combustion.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer: Both Assertion and reason are true and Reason(R) is the correct explanation of Assertion (A)
Assertion: Heating of copper sulphate crystals results in a color change from blue to white. When crystals of copper sulphate is heated it changes its color from blue to white.
Reason: This chemical reaction is reversible when we add water to the white powder.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer: Both Assertion and reason are true and Reason(R) is the correct explanation of Assertion (A)
Assertion: When Hydrogen gas burns it gives a pop sound.
Reason: Hydrogen gas is highly flammable and burns in the presence of oxygen.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer: Both Assertion and reason are true and Reason(R) is the correct explanation of Assertion (A)
Assertion: Silver items lose its lusture when exposed to air.
Reason: This is due to silver chloride on the surface of silver items.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer: Both Assertion and reason are true and Reason(R) is the correct explanation of Assertion (A)
Assertion: Rusting is an example of a physical change.
Reason: Rusting happens when iron combines with oxygen in the presence of moisture.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer: Assertion (A)is false But Reason ( R ) is correct, but it does not correctly explain the assertion.
Assertion and Reason Class 10 Chemistry Chapter 1 Chemical Reactions and Equations
Assertion: Burning of a magnesium ribbon is an example of a chemical change.
Reason: magnesium combines with oxygen to form magnesium oxide, which is different from the original magnesium ribbon.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer: Both Assertion and reason are true and Reason(R) is the correct explanation of Assertion (A)
Assertion: Zinc metal displaces copper from copper sulfate solution.
Reason: Zinc is more reactive than copper, hence it displaces copper from its compound in aqueous solution.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer: Both Assertion and reason are true and Reason(R) is the correct explanation of Assertion (A)
Assertion: Decomposition of vegetable matter in a compost pit is a chemical change.
Reason: Decomposition breakdown the complex organic compounds into simpler substances like carbon dioxide, water, and minerals.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer: Both Assertion and reason are true and Reason(R) is the correct explanation of Assertion (A)
Assertion: Calcium oxide reacts vigorously with water.
Reason: This reaction gives calcium hydroxide and releases a large amount of heat.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer: Both Assertion and reason are true and Reason(R) is the correct explanation of Assertion (A)
Assertion: Photosynthesis is a chemical change.
Reason: It involves the conversion of carbon dioxide and water into glucose.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer: Both Assertion and reason are true and Reason(R) is the correct explanation of Assertion (A)
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