Multiple choice

Directions: In the questions 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: In water, 1 gram of hydrogen combines with 16 grams of oxygen. In hydrogen peroxide, 1 gram of hydrogen combines with 8 grams of peroxide.

Reason: The ratio of oxygen in water and hydrogen peroxide combining with the same amount of hydrogen is the law of multiple proportions.

  1. A

  2. B

  3. C

  4. D

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

A is incorrect and R is correct. A: In water, 1 gram of hydrogen combines with 8 grams of oxygen and in hydrogen peroxide, 1 gram of hydrogen combines with 16 grams of peroxide. R: The law of multiple proportions defines that when two elements combine to form more than one compound, the mass of one element that combines with the given mass of the other element in different compounds is in the ratio of small whole numbers.

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