Given: R = 8.314 JK-1 mol-1, the work done during combustion of 0.090 kg of ethane (molar mass = 30) at 300 K is
-18.7 kJ
18.7 kJ
6.234 kJ
-6.234 kJ
What is the possible number of monohydroxy derivatives of a hydrocarbon consisting of five carbon atoms with one methyl group as a branch?
2
3
4
5
C.
4
If a hydrocarbon chain consisting of 5C atoms, alongwith a CH3 group as a branch, then 4 derivatives of -COOH can be obtained-
(i) CH3-CH2-CH2-CH(CH3)-COOH
(ii) CH3-CH2-CH(CH3)-CH2COOH
(iii) CH3-CH(CH3)-CH2-CH2COOH
(iv) CH2(CH3)-CH2-CH2-CH2COOH
Chlorination of ethane is carried out in the presence of
anhydrous AlBr3
mercuric chloride
ultraviolet light
zinc chloride
The compound which is not formed when a mixture of n-butyl bromide and ethyl bromide treated with sodium metal in the presence of dry ether is
butane
octane
hexane
ethane
The total number of monohalogenated products formed by halogenation of 2, 4, 4-trimethylhexane are,
5
7
6
8
If 27 g of water is formed during complete combustion of pure propene (C3H6), the mass of propene burnt is
42 gm
21 gm
14 gm
56 gm
When methane is heated with dioxygen in the presence of Mo2O3 catalyst, the organic product obtained is
methanal
ethanoic acid
methanol
ethanol
The products obtained by the ozonolysis of 2-ethylbut-1-ene are
propanone and ethanal
methanal and 3-pentanone
ethanal and 3-pentanone
butanal and ethanal
When n-hexane is heated with anhydrous AlCl3 and HCl gas, the major product obtained is
1-chlorohexane
2-chlorohexane
3-chlorohexane
mixture of 2-methylpentane and 3-methylpentane
The decreasing order of acidic character among ethane (I), ethene (II), ethyne (III) and propyne (IV) is
(I) > (II) > (III) > (IV)
(II) > (III) > (I) > (IV)
(III) > (IV) > (II) > (I)
(IV) > (III) > (II) > (I)