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A reaction is carried out by….. Is calle...

A reaction is carried out by….. Is called thermal decomposition reaction.

A

heating

B

lighting

C

Catalyst

D

Current passing

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The correct Answer is:
A
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Assertion (A) : All the decomposition reactions are endothermic. Reason (R) : Decomposition reactions require energy in the form of heat, light of electricity.

A hydrogenation reaction is carried out at 500 K. If the same reaction is carried out in the presence of a catalyst at the same rate with same frequency factor, the temperature required is 400 K. What is the activation energy of the eaction. If the catalyst lowers the activation energy barrier by 16 KJ/mol?

VGS PUBLICATION-BRILLIANT-CHEMICAL REACTIONS AND EQUATIONS-OBJECTIVE TYPE QUESTIONS
  1. 2g of hydrogen gas occupies…......litres.

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  2. The chemical formula of marble is….....

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  3. A reaction is carried out by….. Is called thermal decomposition reacti...

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  4. All the decomposition reactions are….

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  5. The number of molecules present in 1g of hydrogen

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  6. Corrosion on silver is

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  7. Corrosion copper is…

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  8. Which of the following is an Anti oxidant

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  9. Raising of dough with yeast depends on …………..of sugars to CO(2) and wa...

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  10. Match the following . {:("Oxide","Colour"),("1) MgO","a) White"),("2...

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  11. Assertion (A) : CaO+H(2)Orarr Ca(OH)(2) is a chemical change. Reason...

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  12. Assertion (A) : The number of atoms of each element before and after r...

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  13. Assertion (A) : All the chemical equations must be balanced. Reason ...

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  14. Assertion (A) : 2C(3)H(8)+10O(2)rarr 6CO(2)+8H(2)O is not a balanced e...

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  15. Assertion (A) : All the decomposition reactions are endothermic. Rea...

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  16. Assertion (A) : The element zinc has displaced hydrogen from hydrochlo...

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  17. Assertion (A) : Fe+CuSO(4)rarr FeSO(4)+Cu. Reason : (R) Copper is mo...

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  18. Assertion (A) : Oxiation take place in metals only. Assertion (B) : ...

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  19. Which one is not an oxidation process ?

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  20. Assertion (A) : Chips packets are filled with Vitamin 'C' and Vitamin ...

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