NEET
- Exam
- NEET
- Subject
- Chemistry
- Chapter
- Some Basic Concepts of Chemistry
NEET · Chemistry · Some Basic Concepts of Chemistry
Given below are two statements; one is labelled as Assertion (A)...
Given below are two statements; one is labelled as Assertion (A) and the other is labelled as Reason(R).
Assertion (A) : Equal volume of all gases contains equal no. of atoms, under same conditions of P and T.
Reason (R) : Atom is the smallest particle which takes part in chemical reactions.
In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- AIf (A) & (R) both are correct and (R) is the correct explanation of (A).
- BIf (A) & (R) both are correct but (R) is not the correct explanation of (A).
- C(A) is incorrect and (R) is correct.
- D(A) & (R) both are incorrect.
Correct answer
C. (A) is incorrect and (R) is correct.
Step-by-step solution
Evaluation of Statements:
Assertion (A): "Equal volume of all gases contains equal no. of atoms, under same conditions of and ."
- Incorrect. Equal volumes of gases at the same temperature and pressure contain equal numbers of molecules (not atoms), as per Avogadro's law. The number of atoms depends on the molecular composition of the gas.
Reason (R): "Atom is the smallest particle which takes part in chemical reactions."
- Correct. An atom is indeed the smallest unit of an element that retains the properties of that element and participates in chemical reactions.
Conclusion:
- Correct option: (3) (A) is incorrect and (R) is correct.