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Assertion: As mole is the basic chemical...

Assertion: As mole is the basic chemical unit, the concentration of the dissolved solute is usually specified in terms of number of moles of solute.
Reason: The total number of molecules of reactants involved ina balanced chemical equation is known as molecularity of the reaction.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
B
The number of moles of a solute present in 1 litre of solution is known is as molarity (M).
The total no. of molecules of reactants present in a balanced chemical equation is known as molecularity. For example,
`PCl_(5) rarr PCl_(3) + Cl_(2)` (Unimolecular)
`2HCl rarr H_(2)+I_(2)` (Bimolecular)
`:.` Molarity and molecularity are used in different sense.
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ERRORLESS -SOME BASIC CONCEPTS OF CHEMISTRY-Ordinary Thinking (Objective Questions) The mole concept
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  2. Which has maximum number of atoms

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  3. In INCORRECT statement for 14 g of CO is .

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  4. The total number of protons in 10g of calcium carbonate is (N(0) = 6.0...

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  5. The number of formula units of calcium fluoride CaF(2) present in 146....

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  6. Volume occupied by one molecule of water (density = 1 g cm^(-3))

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  7. The number of gram atom of oxygen in 6.02xx10^(24) CO molecules is

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  8. The number of moles of hydrogen that can be added to 1 mole of an oil ...

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  9. Mass of 0.1 moleof methane is

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  10. Sodium nitrate on reduction with Zn in presence of NaOH solution produ...

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  11. 1 mole of methylamine on reaction with nitrous acid gives at NTP:

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  12. 100 mL of O(2) and H(2) are kept at same temperature and pressure. Wha...

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  13. Common salt obtained from sea water contains 95% NaCl by mass. The app...

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  14. Which of the following is Loschmidt number

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  15. Assertion: Volume of a gas is inversely proportional to the number of ...

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  16. Assertion : One mole of SO(2) contains double the number of molecules ...

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  17. Assertion : 22.4 L of N(2) at NTP and 5.6 L O(2) at NTP contain equal ...

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  18. Assertion: As mole is the basic chemical unit, the concentration of th...

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  19. Assertion : Atomicity of oxygen is 2. Reason : 1 mole of an element ...

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  20. In which case is the number of molecules of water maximum?

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