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Add (0.001 +0.02) upto correct number of...

Add (0.001 +0.02) upto correct number of significant figures

A

0.021

B

0.02

C

0.003

D

0.001

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-SOME BASIC CONCEPT OF CHEMISTRY-EXERCISE
  1. How many significant figures are in 0.0005?

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  2. The number of significant figures in 1.0001 are

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  3. Add (0.001 +0.02) upto correct number of significant figures

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  4. The multiple 5 xx 0.2 after rounding off will be

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  5. Round off 0.1525 upto three significant figures

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  6. Round off 0.1576 upto one digit after decimal

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  7. The value of (5.86 xx 3.96)/(2.86) will be equal to

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  8. The percentage of hydrogen in water and hydrogen peroxide is 11 .1 and...

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  9. Element X forms five stable oxides with oxygen of formula X(2) O, XO ,...

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  10. Which of the following represents Avogadro's hypothesis ?

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  11. When 200 g of lime strongly heated , it undergoes thermal decompositio...

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  12. Carbon and oxygen react in ratio 3 : 8 by mass to form CO(2) . What we...

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  13. Cu forms two oxides cuprous and cupric oxides, which law can be proved...

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  14. The law of conservation of mass holds good for all of the following ex...

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  15. Equal volumes of all gases under similar conditions of temperature and...

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  16. Which of the following pair of compounds illustrate the law of multipl...

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  17. Gay Lussac's law is not valid in the chemical reaction:

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  18. Atomic weight of chlorine is 35.5 . It has two isotopes of atomic weig...

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  19. The number of moles of nitrogen atom in 56 g nitrogen is

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  20. The number of mole of N - atom in 18.066 x 10 ^(23) nitrogen atoms is

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