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Laws of chemical combina..



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Q1. Which of the following may be an incorrect statement?

(a) Law of Definite Composition is also known as Law of Definite composition
(b) Mass can neither be created nor destroyed is Law of Conservation of Volume
(c) Antoine Lavoisier conducted many experiments regarding combustion
(d) Five basic laws are required to govern the combination of elements to form compounds

Q2. Which of the following is not a law of chemical combination?

(a) Law of Multiple Proportions
(b) Avogadro?s Law
(c) Law of Definite Proportion
(d) Law of Conservation of volume

Q3. Who proposed that equal volumes of all gases at the same temperature & given pressure should contain an equal number of molecules?

(a) Antoine Lavoisier
(b) Joseph Proust
(c) Avogadro
(d) Joseph Louis

Q4. The volumes of hydrogen & oxygen when combined bear a simple ratio of 2:1.This is explained by ________

(a) Law of Multiple Proportions
(b) Avogadro?s Law
(c) Law of Definite Proportion
(d) Gay Lussac?s Law of Gaseous Volumes

Q5. Law of Definite Composition is also known as ________

(a) Law of Multiple Proportions
(b) Avogadro?s Law
(c) Law of Definite Proportion
(d) Law of Conservation of Mass

Q6. Who proposed the Law of Definite Composition?

(a) Joseph Proust
(b) Lorenzo Romano
(c) Joseph Louis
(d) Antoine Lavoisier

Q7. What did Dalton propose?

(a) Law of Multiple Proportions
(b) Avogadro?s Law
(c) Law of Definite Composition
(d) Law of Conservation of Mass

Q8. What did Joseph Proust state regarding Law of Definite Proportions?

(a) A given mixture always contains absolutely the same proportion of elements by weight
(b) A given compound always contains absolutely the same proportion of moles by weight
(c) A given compound always contains absolutely the same proportion of elements by volume
(d) A given compound always contains absolutely the same proportion of elements by weight

Q9. Who proposed Law of Conservation of Mass?

(a) Antoine Lavoisier
(b) Joseph Proust
(c) Lorenzo Romano
(d) Joseph Louis

Q10. How many basic laws are required to govern the combination of elements to form compounds?

(a) 6
(b) 5
(c) 4
(d) 1


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