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Powdered magnesium element catches fire ...

Powdered magnesium element catches fire more repidly than magnesium wire of the same mass because

A

Surface area of magnesium wire is larger than their powdered form

B

density of magnesium wire is greater than that of their powdered form

C

powdered magnesium have larger surface area

D

None of above

Text Solution

Verified by Experts

The correct Answer is:
C
The rate of a reaction increases with iincrease in their surface area.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-CHEMICAL KINETICS -Exercise 2
  1. The rate constant (K') of one reaction is double of the rate constant ...

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  2. The rate constant of the chemical reaction doubled for an increase of ...

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  3. Powdered magnesium element catches fire more repidly than magnesium wi...

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  4. Compounds A and B react according to the following chemical equation, ...

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  5. For the reaction 2H(2)+O(2)rarr 2H(2)O, the rate law expression is , ...

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  6. consider the following reaction, N(2)(g)+3H(2)(g)hArr2NH(3)(g) The...

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  7. For a reaction Rto P, the concentration of a reactant changes from 0.0...

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  8. Consider the following reaction, 2P(2)O(5)rarr4PO(2)(g)+O(2)(g) If...

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  9. For the reaction, A+Brarr"product" If concentration of A is doubled,...

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  10. The rate constant for the first order decomposition of ethylene oxide ...

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  11. On the basis of the curve shown above, identify the correct statement(...

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  12. Consider the following reaction, N(2)(g)+3H(2)(g)hArr 2NH(3)(g)+22kc...

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  13. Consider the following reaction, 2A + B + C rarr Products How wi...

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  14. Which of the following expression is correct for the rate of reac...

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  15. The reaction Ararr B follows first order kinetics. The time taken for ...

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  16. The rate of formation of SO(3) in the following reaction is 100 g " mi...

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  17. Consider the following reaction, 2N(2)O(5)rarr4NO(2)+O(2),(d[NO(2)]...

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  18. For a hypothetical reaction, ArarrP the rate constant is 0.12 s^(-1)...

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  19. The initial concentration of N(2)O(5) in the following first order rea...

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  20. A following mechanism has been proposed for a reaction 2A +B rarr D ...

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