TestUstad

Which of the following is not true for a mole?

Correct answer: D. It contains different number of particles for different substances

  • A. It is counting unit
  • B. It is the gram atomic or gram formulae mass of a substance
  • C. It contains 6.023 x 10^23 particles
  • D. It contains different number of particles for different substances

Explanation

Option d is correct because moles represent a quantity of substance, and this quantity will differ for different substances due to their varying atomic and molecular weights.

Written and checked by , M.Phil ChemistryLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Fundamental Concepts of Chemistry

Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.

Practise Fundamental Concepts of Chemistry

894 free Fundamental Concepts of Chemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Fundamental Concepts of Chemistry testAll Fundamental Concepts of Chemistry MCQs

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Chemistry questions like this

Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Lecturer Chemistry Test Chemistry80 MCQsSubject Specialist Chemistry Test Chemistry80 MCQsDUHS Chemistry45 MCQsETEA MDCAT Chemistry45 MCQsKMU Chemistry45 MCQsMDCAT Chemistry45 MCQsNUMS Chemistry40 MCQsECAT Chemistry30 MCQsETEA Engineering Admission Test Chemistry30 MCQsGIKI Chemistry30 MCQsNED Chemistry30 MCQsNET Chemistry30 MCQsPIEAS Chemistry30 MCQsBSN Entry Test Chemistry25 MCQs

More Fundamental Concepts of Chemistry questions

Which one is monoisotopic element?

Chemical equations do not tell about the _ because of certain limitations:

The total number of neutrons in 5g of H2O are: 1 NA = 6.023 x 10^23

What is the mass of Mg3N2 produced if 48 g of Mg metal is reacted with 34 g NH3? 3Mg + 2NH3 → Mg3N2 + 3H2

Which sample contains the largest number of atoms?

112 ml of a gas is produced at STP by the action of 0.412 gm of ROH alcohol with CH3Mgl. Molecular mass of alcohol is: