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When pentane , C(5) H(12) is burned in e...

When pentane , `C_(5) H_(12)` is burned in excess oxygen , the products of the reaction are `CO_(2)(g)` and `H_(2)O (l)` . The balanced equation for this combustion is `C_(5) H_(12)(g) + xO_(2)(g) rarr 5CO_(2)(g) + 6 H_(2) O (l)`
The coefficient (x) of oxygen should be

A

16

B

12

C

11

D

8

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH INSTITUTE-SOME BASIC CONCEPTS OF CHEMISTRY -ASSIGNMENT SECTION A (Objective Type Questions (One option is correct))
  1. Which one of the following statements is false ?

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  2. A balanced chemical equation is in accordance with

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  3. When pentane , C(5) H(12) is burned in excess oxygen , the products of...

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  4. Which one of the following best explains the law of conservation of ma...

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

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

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

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  8. Two oxides of a metal contain 27.6% and 30.0% of Oxygen, respecttively...

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  9. Which of the following is not a physical quantity of measurement ?

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  10. Physical properties can be measured

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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. Molecular mass of C(3) H(7) OH is

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  14. If an atom of an element has twice the mass of C-12 , then its atomic ...

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  15. Formula unit mass of K(2) CO(3) is (Atomic mass of K = 39 u , C = 1...

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

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

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  18. The number of particles presents in 1 mol of nitrogen atom are

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  19. Molality is expressed in units of

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  20. Which of the following is correct ?

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