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(A) : The reaction C + O(2) rarr CO(2) i...

(A) : The reaction `C + O_(2) rarr CO_(2)` is an exothermic reaction
Reason (R ): In this reaction that total enthalpy of the product is less than the total enthalpy of the reactants

A

A and R are true, R explains A

B

A and R are true, R does not explain A

C

A is true, but R is false

D

A is false, but R is true

Text Solution

Verified by Experts

The correct Answer is:
A
Combustion is exothermic
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AAKASH SERIES-CHEMICAL THERMODYNAMICS-PRACTICE SHEET (EXERCISE- II) (LEVEL- I (MAIN) STRAIGHT OBJECTIVE TYPE QUESTIONS)
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  2. Which are of the following is an exothermic reaction?

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  5. Which of the following equation represents standard heat of formation ...

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  6. Which of the following is not a combustion reaction

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  7. The chemical process involved in the combustion reactions is

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  8. MgSO(4(s)) + H(2)O rarr MgSO(4(aq)), Delta H = - 84K. Cals, Delta H of...

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  10. N(2) + 3H(2) rarr 2NH(3), Delta H = - 46K. Cals. From the above reacti...

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  11. The enthalpies of HCl, NaOH ,NaCl and H(2)O are -120, -82, -148 and -6...

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  12. How much energy is released when 6 mole of octane is burnt in air? Giv...

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  13. What is theheat of formation of C(6)H(6), given that the heats of comb...

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  14. Heat of combustion of C(2)H(4) is -337 kCal. If 5.6 lit O(2) is used a...

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  15. For the following reaction H((aq))^(+) + OH((aq))^(-) rarr H(2)O((l)) ...

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  16. For the reaction 2H(2)O((l)) rarr H(3)O((aq))^(+) + OH((aq))^(-), the ...

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  17. The heat of neutralisation is maximum when

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  18. Assertion (A): Heat of neutralization of HClO(4) with NaOH is same as ...

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  19. In which of the following combinatins of HCL and NaOH, the heat energy...

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