Oxidation of Alkanes
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Q. The third member of the homologous series ofaliphatic aldehydes has the structure1) CH2CH2CHO(2) CH3COCH2CH3(3) CH3(CH)2 CHO(4) CH3COCH3
Q. What will be the n factor of HNO}3 if it is acting both as an acid and an oxidising agent?
Q. how many stereoisomers are there for 1-ethyl-3-methylcyclohexane?
Q. when bengaldehyde is oxidised to give benzoic acid then the oxidation state of carbon of aldehydic group is changed fro
Q. Some oxidation reactions of methane are given below. Which of them is/are controlled oxidation reactions?
- CH4(g)+2O2(g)→CO2(g)+2H2O(l)
- CH4(g)+O2(g)→C(s)+2H2O(l)
- CH4(g)+O2(g)Mo2O3⟶HCHO+H2O
- 2CH4(g)+O2(g)Cu/523/100atm⟶2CH3OH
Q. Find out the product 'P' :
2CH4+O2Cu/523K−−−−−→100 atmP
2CH4+O2Cu/523K−−−−−→100 atmP
- HCHO
- CH3OH
- H2O
- CH3CHO
Q. The possible product formed on pyrolysis of n-hexane is/are:
- CH4, C3H6, C2H4
- C6H12, H2
- C4H8, C2H6
- All of the above.
Q.
The isomer of ethanol is:
Methanol
Acetone
Diethyl ether
Dimethyl ether
Q. Which of the following is not true about combustion of hydrocarbons?
- All hydrocarbons react in sufficient air to form carbon monoxide and then carbon dioxide
- Its always an exothermic process
- All hydrocarbons react in sufficient air to form carbon dioxide and water
- (b) and (c) above.
Q. 12 ml of a gaseous mixture of an alkane and an alkene (containing same number of carbon atoms) require exactly 285 ml of air (containing 20% by volume of O2 and rest N2) for complete combustion at room temperature. After combustion when the gaseous mixture is passed through a KOH solution, it shows a volume contraction of 36 ml. Find the true statement(s) in the following options:
- The alkane is propane
- The alkene is butene
- Mole fraction of CO2 in the final gaseous mixture is 322
- Liquid water formed is 42 ml
Q. When benzladehyde is oxidized to give benzoic acid then the oxidation state of carbon of aldehydic group is changed from
Q.
The major product of the following reaction sequence is :
Q. When a mixture of methane and oxygen is heated in the presence of molybdenum oxide, the main product formed will be :
- Methanoic acid
- Ethanal
- Methanol
- Methanal
Q.
The major product of the following reaction sequence is :
Q. Identify the product 'P' in the given oxidation reaction:
(CH3)3CH+[O]KMnO4⟶P
(CH3)3CH+[O]KMnO4⟶P
- (CH3)3COH
- H2O and CO2
- CH3CH2CH2CHO
- CH3CH2CH2CH2OH
Q. Oxidation no.of benzoic acid.
Q. Organometallic reagents reacts with carbonyl compounds only at low to moderate temperature and in the presence aprotic solvents.
- False
- True
Q. On complete combustion of ethane to its products, the hybridization of carbon :
- Remains the same.
- Changes from sp2 to sp3
- Changes from sp3 to sp2
- Changes from sp3 to sp