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Some oxidation reactions of methane are given below. Which of them is/are controlled oxidation reactions?
(i) \[\ce{CH4 (g) + 2O2 (g) -> CO2 (g) + 2H2O (l)}\]
(ii) \[\ce{CH4 (g) + O2 (g) -> C (s) + 2H2O (l)}\]
(iii) \[\ce{CH4 (g) + O2 (g) ->[Mo2O3] HCHO + H2O}\]
(iv) \[\ce{2CH4 (g) + O2 (g) ->[Cu/523 /100 atm] 2CH3OH}\]
Concept: undefined >> undefined
Match the reactions given in Column I with the reaction types in Column II.
| Column I | Column II |
| (i) \[\ce{CH2 = CH2 + H2O ->[H+] CH3CH2OH}\] | (a) Hydrogenation |
| (i) \[\ce{CH2 = CH2 + H2 ->[Pd] CH3 - CH3}\] | (b) Halogenation |
| (i) \[\ce{CH2 = CH2 + Cl2 -> Cl - CH2 - CH2 - Cl}\] | (c) Polymerisation |
| (i) \[\ce{3CH ≡ CH ->[Cu tube][Heat] C6H6}\] | (d) Hydration |
| (e) Condensation |
Concept: undefined >> undefined
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The pollutants which come directly in the air from sources are called primary pollutants. Primary pollutants are sometimes converted into secondary pollutants. Which of the following belongs to secondary air pollutants?
Concept: undefined >> undefined
An alkene ‘A’ contains three \[\ce{C - C}\], eight \[\ce{C - H}\] σ bonds and one \[\ce{C - C}\] π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.
Concept: undefined >> undefined
An alkene ‘A’ contains three C–C, eight C–H σ bonds and one C–C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.
Concept: undefined >> undefined
An alkene ‘A’ contains three C – C, eight C – H σ bonds and one C – C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.
Concept: undefined >> undefined
An alkene ‘A’ contains three C – C, eight C – H σ bonds and one C – C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.
Concept: undefined >> undefined
What do you mean by significant figures?
Concept: undefined >> undefined
How many significant figures are present in the 0.0025?
Concept: undefined >> undefined
How many significant figures are present in the 208?
Concept: undefined >> undefined
How many significant figures are present in the 5005?
Concept: undefined >> undefined
How many significant figures are present in the 126,000?
Concept: undefined >> undefined
How many significant figures are present in the 500.0?
Concept: undefined >> undefined
How many significant figures are present in the 2.0034?
Concept: undefined >> undefined
Round up the following upto three significant figures:
34.216
Concept: undefined >> undefined
Round up the following upto three significant figures:
10.4107
Concept: undefined >> undefined
Round up the following upto three significant figures:
0.04597
Concept: undefined >> undefined
Round up the following upto three significant figures:
2808
Concept: undefined >> undefined
How many significant figures should be present in the answer of the following calculation:-
`(0.02856 xx 298.15 xx 0.112)/0.5785`
Concept: undefined >> undefined
How many significant figures should be present in the answer of the following calculation?
5 × 5.364
Concept: undefined >> undefined
