Multiple choice

Directions: In the question given below, there are two statements labelled as Assertion (A) and Reason (R). Mark your answer as per the codes provided 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. E. Both A and R are false.

Assertion (A): Graphite and diamond though made from carbon, show different properties. Reason (R): This supports Dalton's atomic theory of matter.

  1. A

  2. B

  3. C

  4. D

  5. E
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct answer. Daltons atomic theory of matter states that when two elements combine to form two or more compounds, then the weight of one of these elements which combines with the fixed weight of the other element, bears a simple ratio to one another.  Though the assertion statement is correct, yet Dalton's theory fails to explain why substances like charcoal, graphite and diamond have different properties when all of these are formed from carbon atoms.

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