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436. Equal volumes of all gases at the same temperature and pressure contain equal number of molecules. This law is called as
A. Boyles law
B. Charles law
C. Avogadros law
D. Gay Lussacs law
Explanation:
437. Given below are two statements, labelled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : Moons gravity is one eighth of the earths gravity.Reason (R) : Due to less gravity moon is unable to retain its atmosphere.
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.
Explanation:
438. Given below are two statements, labelled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : It is relatively difficult to measure pollutant carbon monoxide in the atmosphere.Reason (R) : Carbon monoxide is coloruless, odourless and almost of the same density as air.
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.
Explanation:
439. Given below are two statements, labelled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : Persons having AB group are universal donors.Reason (R) : They can accept blood from A,B, AB and O groups.
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.
Explanation:
440. Teh resinous shellac is obtained from
A. agricultural waste
B. bark of a tree
C. processing of crude oil
D. distillation of wood
Explanation:
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