Chemistry - Chemical Reactions and Equations

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11. Which of the following is an endothermic reaction? (NTSE Haryana, Stage-I, 2013-14)

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12. The reaction between carbon and oxygen can be represented as

C(s) + 02(9) → CO2(g) + heat

In which of the following type(s), the above reaction can be classified?

I. Combustion reaction
II. Displacement reaction
III. Endothermic reaction
IV. Combination reaction (NTSE Stage-II,2012-13)

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13. In which of the following reactions H20 2 acts as a reducing agent?

(a) H20 2 + 2H + 2e→ 2H20
(b) H20 2 - 2e →02 + 2H+
(c) H20 2 + 2e→ 2(OH)
(d) H2O2 + 20H- - 2e → 02 + 2H20

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14. Examine the following statements and select the correct option
A: Electrolytic conduction is a physical change.
B : In electrolytic conduction, positive as well asnegative ions conduct electricity.(NTSE Karnataka Stage-I, 2014-15)

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15. The example for exothermic reaction is (NTSE Karnataka Stage-I, 2014-15)

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