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Atomic mass of an element is...

Atomic mass of an element is

A

Actual mass of one atom of the element

B

Relative mass of an atom of the element

C

Average relative mass of different atoms of the element

D

Always a whole number

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The correct Answer is:
C
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What do you understand by relative atomic mass of an element ?

3.011 xx 10^22 atoms of an element weighs 1.15 gm . The atomic mass of the element is :

An element is found in nature in two isotopic forms with mass numbers (A-1) and (A+3). If the average atomic mass of the element is found to be A, then the relative abundance of the heavier isotope in the nature will be :

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Find the number of g atoms and weight of an element having 2 xx 10^(23) atoms. Atomic mass of element is 32.

For a unit cell of edge length 10 Å, atomic mass of that element is 150 g and density is 1 g cm^(-3) .Find out the atomic radius .

3.011 xx 10^22 atoms of an element weighs 1.15 gm . The atomic mass of the element is : (a) 10amu (b) 2.3amu (c) 35.5amu (d) 23amu

Assertion: Both 12 g . of carbon and 27 g . of aluminium will have 6.02xx10^(23) atoms. Reason: Gram atomic mass of an element contains Avogadro's number of atoms.

Assertion: Both 12 g . of carbon and 27 g . of aluminium will have 6.02xx10^(23) atoms. Reason: Gram atomic mass of an element contains Avogadro's number of atoms.

An element with density 10 g cm^(-3) forms a cubic unit cell with edge length 3xx10^(-8)cm . What is the nature of the cubic unit cell if the atomic mass of the element is 81 g mol^(-1) .

AAKASH INSTITUTE ENGLISH-MOCK TEST 1-EXAMPLE
  1. Which of the following statement is/are correct? (i) An element of a...

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  2. The value of 3.00 km in yards upto correct significant figures and the...

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  3. An analytical balance has uncertainity in measurement equal to pm1 mg....

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  4. The result of the following addition, 3.0560 + 0.0348 + 5.340 upto cor...

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  5. The answer to the correct scientific notation of the following given e...

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  6. Which of the following postulate is incorrect regarding Dalton's Atomi...

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  7. Vapour density of a gas having formula[CO]x is 70. Find out X

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  8. Mass of one atom of an element is 4.0X10^-24 g. This is equal to

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  9. Which of the following combination of volumes (mL) of C2H4(g) and O2(g...

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  10. An element A exist in two isotopic forms A^15 and A^16 . If the averag...

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  11. What will be the mass of O2 molecule in grams?

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  12. Gram molecular mass of CH4 is

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  13. Four one litre flasks are separately filled with the gases CO2, F2, NH...

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  14. Two flasks A and B of equal capacity of volume contain SO3 and CO gas ...

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  15. "Equal volumes of all gases at the same temperature and pressure conta...

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  16. The vapour densities of two gases are in the ratio of 2 : 5 Their mole...

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  17. Atomic mass of an element is

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  18. A compound was found of contain 14.34% oxygen. The minimum molecular w...

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  19. Loschmidt number is the number of

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  20. 1 amu is

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