Out of atomic mass, mass number and atomic number, the physical quantities which are not fundamental physical constants is/areA. Atomic massB. Atomic mass and mass numberC. Mass numberD. Atomic number

Out of atomic mass, mass number and atomic number, the physical quanti

1.	Out of atomic mass, mass number and atomic number, the physical quantities which are not fundamental physical constants is/areA. Atomic massB. Atomic mass and mass numberC. Mass numberD. Atomic number
Answer» Correct Answer - A Atomic mass in not a fundamental physical contant.

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Assertion: Laboratory reagents are usually made up to a specific molarity rather than a given molality. Reason: The volume of a liquid is more easily measured than its mass.A. (a)If both assertion and reason are true and the reason is the correct explanation of the assertion.B. (b)If both assertion and reason are true and the reason is not the correct explanation of the assertion.C. (c )If assertion is true but reason is false.D. (d)If assertion is false but reason is true.
Which of the following statements is correct about the reaction given below:- `4Fe(s)+3O_(2)(g)rarr2Fe_(2)O_(3)(g)`A. Total mass of iron and oxygen in reactants = total mass of iron and oxygen in product, therefore, it follows law of conservation of mass.B. Total mass of reactant = total mass of product, therefore, law of multiple proportions is followed.C. Amount of `Fe_2O_3` can be increased by taking any one of the reactants (iron or oxygen ) in axcess.D. Amount of `Fe_2O_3` produced will decreased if the amount of any one of the reactants (iron or oxygen ) is taken in excess.
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Bleaching powder and bleach solution are produced on a large scale and used in several hous-hold products. The effectiveness of bleach solution id often measured by iodometry. `25 mL` of household bleach solution was mixed with `30 mL` of `0.50 M KI` and `10 mL` of `4N` acetic acid. In the titration of the liberated iodine, `48 mL` of `0.25 N Na_(2)S_(2)O_(3)` was used to reach the end point. The molarity of the household bleach solution is :A. 0.48 MB. 0.96 MC. 0.24 MD. 0.024 M
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Out of atomic mass, mass number and atomic number, the physical quantities which are not fundamental physical constants is/areA. Atomic massB. Atomic mass and mass numberC. Mass numberD. Atomic number

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