Law Of Conservation Of Mass Matter MCQ Tests
8th Class Science MCQ Tests
Law Of Conservation Of Mass Matter
of 8th Class Science has 5 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 5
Total Marks: 5
Time: 5 Mins
Total Questions: 5
Total Marks: 5
Time: 5 Mins
5Min : 00 Sec Remaining
Question # 1
A mixture containing 50 grams of carbon and 75 grams of oxygen is sealed in a flask. The total mass of the system is 225 grams. The flask is heated to cause the carbon and oxygen to react. The sealed flask is weighed. What is the mass of the sealed flask?
Question # 2
In a reaction, 25 grams of reactant AB breaks down into 10 grams of product A and an unknown amount of product B. Using the law of conservation of mass, how much does product B weigh?
Question # 3
What is incorrect about the law of conservation of mass?
Question # 4
In a chemical reaction, 300 grams of reactant A are combined with 100 grams of reactant B. Both A and B react to completion. How much will the product weigh?
Question # 5
Although mass cannot be created, but it reduces when a chemical reaction takes place. State whether the given statement is true or false.
Total Questions
12345
Question # 1
A mixture containing 50 grams of carbon and 75 grams of oxygen is sealed in a flask. The total mass of the system is 225 grams. The flask is heated to cause the carbon and oxygen to react. The sealed flask is weighed. What is the mass of the sealed flask?
Question # 2
In a reaction, 25 grams of reactant AB breaks down into 10 grams of product A and an unknown amount of product B. Using the law of conservation of mass, how much does product B weigh?
Question # 3
What is incorrect about the law of conservation of mass?
Question # 4
In a chemical reaction, 300 grams of reactant A are combined with 100 grams of reactant B. Both A and B react to completion. How much will the product weigh?
Question # 5
Although mass cannot be created, but it reduces when a chemical reaction takes place. State whether the given statement is true or false.
Total Questions
12345
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Updated on: 21-05-2026
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Punjab 8th Class Science Law Of Conservation Of Mass Matter