Chem Mantra
HomeCoursesOnline TestsForum
ForumQuestion BankTwo flasks of equal volumes are evacuated, then…
HARDMCQ SINGLEJEE Advanced ChemistryInorganic ChemistryMole conceptLaw of chemical combination, atomic & molecular mass, mole concept, calculations

Two flasks of equal volumes are evacuated, then one is filled with gas A and other with gas B at the same temperature and pressure. The weight of B was found to be 0.80 gm while the weight of gas A is found to be 1.40 gm. What is the weight of one molecule of B in compared to one molecule of A

A.[object Object]
B.[object Object]
C.[object Object]✓ Correct
D.[object Object]
Explanation

This question uses gaseous state & mole concept. Relate mass, moles and number of particles using the mole concept and basic stoichiometry; doing the algebra gives the value listed in option C.

Gaseous state & mole concept
Back to Question Bank

Practice More Like This

Take chapter-wise tests, track your progress, and master Mole concept.

Start Free Practice →
Sponsored

Master Chemistry for JEE, NEET & IChO

Access 19,000+ solved questions with expert explanations, chapter-wise tests, and full video lectures — all in one platform.

JEE Advanced Chemistry
Explore Courses →Sign In Free