3 1-methylcyclohex-1,4-diene and 1-methylcyclopent-1ene
4 Cyclohex -1,3-diene and 1-methylcyclopent 1 ene
Explanation:
: When cyclohex $-1,3$ - diene, react with $\mathrm{O}_3$ and then $\mathrm{Zn}-\mathrm{H}_2 \mathrm{O}$ it gives ethane - 1,2dicarbaldehyde + Glyoxal/oxaldehyde. When 1-methylcyclopent -1-ene react with \(\mathrm{O}_3\) and then $\mathrm{Zn}, \mathrm{H}_2 \mathrm{O}$ it gives 5 - oxohexanal. Hence, $\mathrm{A}$ is cyclohex-1,3-diene and $\mathrm{B}$ is 1 - When Hence, A is cycloh methylcyclopent-1-ene.
Shift-I]**
Hydrocarbons
230049
Which one of the following molecules contains only primary and tertiary carbon atoms?
1 2,2-Dimethylbutane
2 3-Methylpentane
3 2,3-Dimethylbutane
4 n-Hexane
5 2-Methylhexane
Explanation:
: 2, 3 - dimethylbutane contains only primary and tertiary carbon atoms. In 2, 3- dimethyl butane, $C_1, C_2 C_{\mathrm{I}}, C_{\text {II }}$ are primary carbons and $\mathrm{C}_2, \mathrm{C}_3$ are tertiary corbons.
Kerala CEE -03.07.2022
Hydrocarbons
230050
Which one of the following molecules gives four isomeric monochlorides on photochemical chlorination?
1 2-Methylpropane
2 n-Butane
3 2-Methylbutane
4 2,3-Dimethylbutane
5 Propane
Explanation:
: 2-Methylbutane gives four isomeric monochlorides on photochemical chlorination.
Kerala CEE -03.07.2022
Hydrocarbons
230052
The number of sigma bonds in ethane formed by the overlAP of $s p^3$ and $s$ orbitals is
1 5
2 6
3 7
4 4
Explanation:
: The molecular formula of ethane is $\mathrm{C}_2 \mathrm{H}_6$ The $\mathrm{C}$-atom of ethane is $\mathrm{sp}^3$ hybridised. So, the sigma bond between $\mathrm{C}-\mathrm{C}$ atom is $\mathrm{sp}^3-\mathrm{sp}^3$ sigma bond and the bond formed between $\mathrm{C}$ and $\mathrm{H}$ are $s \mathrm{p}^3-s$ sigma bond. Hence, there are $6 \mathrm{sp}^3-\mathrm{s}$ sigma bonds in ethane.
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Hydrocarbons
230048
' $A$ ' and ' $B$ ' respectively are:
1 1-methylcyclohex-1, 3-diene and cyclopentene
2 Cyclohex-1,3-diene and cyclopentene
3 1-methylcyclohex-1,4-diene and 1-methylcyclopent-1ene
4 Cyclohex -1,3-diene and 1-methylcyclopent 1 ene
Explanation:
: When cyclohex $-1,3$ - diene, react with $\mathrm{O}_3$ and then $\mathrm{Zn}-\mathrm{H}_2 \mathrm{O}$ it gives ethane - 1,2dicarbaldehyde + Glyoxal/oxaldehyde. When 1-methylcyclopent -1-ene react with \(\mathrm{O}_3\) and then $\mathrm{Zn}, \mathrm{H}_2 \mathrm{O}$ it gives 5 - oxohexanal. Hence, $\mathrm{A}$ is cyclohex-1,3-diene and $\mathrm{B}$ is 1 - When Hence, A is cycloh methylcyclopent-1-ene.
Shift-I]**
Hydrocarbons
230049
Which one of the following molecules contains only primary and tertiary carbon atoms?
1 2,2-Dimethylbutane
2 3-Methylpentane
3 2,3-Dimethylbutane
4 n-Hexane
5 2-Methylhexane
Explanation:
: 2, 3 - dimethylbutane contains only primary and tertiary carbon atoms. In 2, 3- dimethyl butane, $C_1, C_2 C_{\mathrm{I}}, C_{\text {II }}$ are primary carbons and $\mathrm{C}_2, \mathrm{C}_3$ are tertiary corbons.
Kerala CEE -03.07.2022
Hydrocarbons
230050
Which one of the following molecules gives four isomeric monochlorides on photochemical chlorination?
1 2-Methylpropane
2 n-Butane
3 2-Methylbutane
4 2,3-Dimethylbutane
5 Propane
Explanation:
: 2-Methylbutane gives four isomeric monochlorides on photochemical chlorination.
Kerala CEE -03.07.2022
Hydrocarbons
230052
The number of sigma bonds in ethane formed by the overlAP of $s p^3$ and $s$ orbitals is
1 5
2 6
3 7
4 4
Explanation:
: The molecular formula of ethane is $\mathrm{C}_2 \mathrm{H}_6$ The $\mathrm{C}$-atom of ethane is $\mathrm{sp}^3$ hybridised. So, the sigma bond between $\mathrm{C}-\mathrm{C}$ atom is $\mathrm{sp}^3-\mathrm{sp}^3$ sigma bond and the bond formed between $\mathrm{C}$ and $\mathrm{H}$ are $s \mathrm{p}^3-s$ sigma bond. Hence, there are $6 \mathrm{sp}^3-\mathrm{s}$ sigma bonds in ethane.
3 1-methylcyclohex-1,4-diene and 1-methylcyclopent-1ene
4 Cyclohex -1,3-diene and 1-methylcyclopent 1 ene
Explanation:
: When cyclohex $-1,3$ - diene, react with $\mathrm{O}_3$ and then $\mathrm{Zn}-\mathrm{H}_2 \mathrm{O}$ it gives ethane - 1,2dicarbaldehyde + Glyoxal/oxaldehyde. When 1-methylcyclopent -1-ene react with \(\mathrm{O}_3\) and then $\mathrm{Zn}, \mathrm{H}_2 \mathrm{O}$ it gives 5 - oxohexanal. Hence, $\mathrm{A}$ is cyclohex-1,3-diene and $\mathrm{B}$ is 1 - When Hence, A is cycloh methylcyclopent-1-ene.
Shift-I]**
Hydrocarbons
230049
Which one of the following molecules contains only primary and tertiary carbon atoms?
1 2,2-Dimethylbutane
2 3-Methylpentane
3 2,3-Dimethylbutane
4 n-Hexane
5 2-Methylhexane
Explanation:
: 2, 3 - dimethylbutane contains only primary and tertiary carbon atoms. In 2, 3- dimethyl butane, $C_1, C_2 C_{\mathrm{I}}, C_{\text {II }}$ are primary carbons and $\mathrm{C}_2, \mathrm{C}_3$ are tertiary corbons.
Kerala CEE -03.07.2022
Hydrocarbons
230050
Which one of the following molecules gives four isomeric monochlorides on photochemical chlorination?
1 2-Methylpropane
2 n-Butane
3 2-Methylbutane
4 2,3-Dimethylbutane
5 Propane
Explanation:
: 2-Methylbutane gives four isomeric monochlorides on photochemical chlorination.
Kerala CEE -03.07.2022
Hydrocarbons
230052
The number of sigma bonds in ethane formed by the overlAP of $s p^3$ and $s$ orbitals is
1 5
2 6
3 7
4 4
Explanation:
: The molecular formula of ethane is $\mathrm{C}_2 \mathrm{H}_6$ The $\mathrm{C}$-atom of ethane is $\mathrm{sp}^3$ hybridised. So, the sigma bond between $\mathrm{C}-\mathrm{C}$ atom is $\mathrm{sp}^3-\mathrm{sp}^3$ sigma bond and the bond formed between $\mathrm{C}$ and $\mathrm{H}$ are $s \mathrm{p}^3-s$ sigma bond. Hence, there are $6 \mathrm{sp}^3-\mathrm{s}$ sigma bonds in ethane.
3 1-methylcyclohex-1,4-diene and 1-methylcyclopent-1ene
4 Cyclohex -1,3-diene and 1-methylcyclopent 1 ene
Explanation:
: When cyclohex $-1,3$ - diene, react with $\mathrm{O}_3$ and then $\mathrm{Zn}-\mathrm{H}_2 \mathrm{O}$ it gives ethane - 1,2dicarbaldehyde + Glyoxal/oxaldehyde. When 1-methylcyclopent -1-ene react with \(\mathrm{O}_3\) and then $\mathrm{Zn}, \mathrm{H}_2 \mathrm{O}$ it gives 5 - oxohexanal. Hence, $\mathrm{A}$ is cyclohex-1,3-diene and $\mathrm{B}$ is 1 - When Hence, A is cycloh methylcyclopent-1-ene.
Shift-I]**
Hydrocarbons
230049
Which one of the following molecules contains only primary and tertiary carbon atoms?
1 2,2-Dimethylbutane
2 3-Methylpentane
3 2,3-Dimethylbutane
4 n-Hexane
5 2-Methylhexane
Explanation:
: 2, 3 - dimethylbutane contains only primary and tertiary carbon atoms. In 2, 3- dimethyl butane, $C_1, C_2 C_{\mathrm{I}}, C_{\text {II }}$ are primary carbons and $\mathrm{C}_2, \mathrm{C}_3$ are tertiary corbons.
Kerala CEE -03.07.2022
Hydrocarbons
230050
Which one of the following molecules gives four isomeric monochlorides on photochemical chlorination?
1 2-Methylpropane
2 n-Butane
3 2-Methylbutane
4 2,3-Dimethylbutane
5 Propane
Explanation:
: 2-Methylbutane gives four isomeric monochlorides on photochemical chlorination.
Kerala CEE -03.07.2022
Hydrocarbons
230052
The number of sigma bonds in ethane formed by the overlAP of $s p^3$ and $s$ orbitals is
1 5
2 6
3 7
4 4
Explanation:
: The molecular formula of ethane is $\mathrm{C}_2 \mathrm{H}_6$ The $\mathrm{C}$-atom of ethane is $\mathrm{sp}^3$ hybridised. So, the sigma bond between $\mathrm{C}-\mathrm{C}$ atom is $\mathrm{sp}^3-\mathrm{sp}^3$ sigma bond and the bond formed between $\mathrm{C}$ and $\mathrm{H}$ are $s \mathrm{p}^3-s$ sigma bond. Hence, there are $6 \mathrm{sp}^3-\mathrm{s}$ sigma bonds in ethane.
cyclohex $-1,3$ - diene, react
1-methylcyclopent -1-ene react with \(\mathrm{O}_3\) and then $\mathrm{Zn}, \mathrm{H}_2 \mathrm{O}$ it gives 5 - oxohexanal.
