230158
Which one of the following contain isopropyl group?
1 2,2,3,3-Tetramethylpentane
2 2-Methylpentane
3 2,2,3-Trimethylpentane
4 3,3-Dimethylpentane
Explanation:
: The structure of the following - In option (b) have contain isopropyl group
BITSAT - 2009
Hydrocarbons
230165
The reaction between an alkyl halide and sodium metal in dry ether is called
1 Clemmensen reduction
2 Kolbe's reaction
3 Wurtz's reaction
4 Cannizaro's reaction
Explanation:
: The reaction between an alkyl halide and sodium metal in dry ether is called wurtz's reaction. $\mathrm{R}_1 \mathrm{x}+2 \mathrm{Na}+\mathrm{XR}_2 \stackrel{\text { EH`r }}{\longrightarrow} \mathrm{R}_1-\mathrm{R}_2+2 \mathrm{Nax}$ Where, $\mathrm{X}=$ Halide group $\mathrm{R}=$ alkyl group
CG PET -2004
Hydrocarbons
230168
How many numbers of sigma $(\sigma)$ and pi $(\pi)$ bonds in DDT respectively ?
1 28 and 6
2 29 and 6
3 30 and 6
4 21 and 6
Explanation:
: 1, 1, 1-trichloro -2, $2-\operatorname{di}(4$-chlorophenyl) ethane (DDT) In DDT, number of $\sigma$ bond is 21 and $\pi$ bond is 6.
GUJCET-2022
Hydrocarbons
230171
The resulting solution obtained at the end of electrolysis of concentrated aqueous solution of NaCl....
1 Turns red litmus into blue
2 Turns blue litmus into red
3 Remains colourless with phenolphthalein
4 The colour of red or blue litmus does not change
Explanation:
: Sodium chloride is dissociated and exists as sodium and chloride ions in aqueous solution, electrolysis of sodium chloride is easier in aqueous solution, $\mathrm{NaCl}(\mathrm{aq})+\mathrm{H}_2 \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{Na}^{+}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq})+\frac{1}{2} \mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{Cl}_2 \text { (g) }$ Hence, the resulting solution obtained at the end of electrolysis of concentrated aqueous solution of $\mathrm{NaCl}$ turns red litmus into blue.
GUJCET-2015
Hydrocarbons
230172
Arrange the following in decreasing order of their boiling points
1 $\mathrm{A}>\mathrm{B}>\mathrm{C}>\mathrm{D}$
2 $\mathrm{B}<\mathrm{C}>\mathrm{D}<\mathrm{A}$
3 D $>$ C $>$ A $>$ B
4 $\mathrm{C}>\mathrm{B}>\mathrm{D}>\mathrm{A}$
Explanation:
: The structure of the following hydrocarbon- Boiling point depends upon the number of carbon chain increase boiling point increase. Boiling point decrease when the branching of group increase. So, the order is $\mathrm{C}>\mathrm{B}>\mathrm{D}>\mathrm{A}$
230158
Which one of the following contain isopropyl group?
1 2,2,3,3-Tetramethylpentane
2 2-Methylpentane
3 2,2,3-Trimethylpentane
4 3,3-Dimethylpentane
Explanation:
: The structure of the following - In option (b) have contain isopropyl group
BITSAT - 2009
Hydrocarbons
230165
The reaction between an alkyl halide and sodium metal in dry ether is called
1 Clemmensen reduction
2 Kolbe's reaction
3 Wurtz's reaction
4 Cannizaro's reaction
Explanation:
: The reaction between an alkyl halide and sodium metal in dry ether is called wurtz's reaction. $\mathrm{R}_1 \mathrm{x}+2 \mathrm{Na}+\mathrm{XR}_2 \stackrel{\text { EH`r }}{\longrightarrow} \mathrm{R}_1-\mathrm{R}_2+2 \mathrm{Nax}$ Where, $\mathrm{X}=$ Halide group $\mathrm{R}=$ alkyl group
CG PET -2004
Hydrocarbons
230168
How many numbers of sigma $(\sigma)$ and pi $(\pi)$ bonds in DDT respectively ?
1 28 and 6
2 29 and 6
3 30 and 6
4 21 and 6
Explanation:
: 1, 1, 1-trichloro -2, $2-\operatorname{di}(4$-chlorophenyl) ethane (DDT) In DDT, number of $\sigma$ bond is 21 and $\pi$ bond is 6.
GUJCET-2022
Hydrocarbons
230171
The resulting solution obtained at the end of electrolysis of concentrated aqueous solution of NaCl....
1 Turns red litmus into blue
2 Turns blue litmus into red
3 Remains colourless with phenolphthalein
4 The colour of red or blue litmus does not change
Explanation:
: Sodium chloride is dissociated and exists as sodium and chloride ions in aqueous solution, electrolysis of sodium chloride is easier in aqueous solution, $\mathrm{NaCl}(\mathrm{aq})+\mathrm{H}_2 \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{Na}^{+}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq})+\frac{1}{2} \mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{Cl}_2 \text { (g) }$ Hence, the resulting solution obtained at the end of electrolysis of concentrated aqueous solution of $\mathrm{NaCl}$ turns red litmus into blue.
GUJCET-2015
Hydrocarbons
230172
Arrange the following in decreasing order of their boiling points
1 $\mathrm{A}>\mathrm{B}>\mathrm{C}>\mathrm{D}$
2 $\mathrm{B}<\mathrm{C}>\mathrm{D}<\mathrm{A}$
3 D $>$ C $>$ A $>$ B
4 $\mathrm{C}>\mathrm{B}>\mathrm{D}>\mathrm{A}$
Explanation:
: The structure of the following hydrocarbon- Boiling point depends upon the number of carbon chain increase boiling point increase. Boiling point decrease when the branching of group increase. So, the order is $\mathrm{C}>\mathrm{B}>\mathrm{D}>\mathrm{A}$
230158
Which one of the following contain isopropyl group?
1 2,2,3,3-Tetramethylpentane
2 2-Methylpentane
3 2,2,3-Trimethylpentane
4 3,3-Dimethylpentane
Explanation:
: The structure of the following - In option (b) have contain isopropyl group
BITSAT - 2009
Hydrocarbons
230165
The reaction between an alkyl halide and sodium metal in dry ether is called
1 Clemmensen reduction
2 Kolbe's reaction
3 Wurtz's reaction
4 Cannizaro's reaction
Explanation:
: The reaction between an alkyl halide and sodium metal in dry ether is called wurtz's reaction. $\mathrm{R}_1 \mathrm{x}+2 \mathrm{Na}+\mathrm{XR}_2 \stackrel{\text { EH`r }}{\longrightarrow} \mathrm{R}_1-\mathrm{R}_2+2 \mathrm{Nax}$ Where, $\mathrm{X}=$ Halide group $\mathrm{R}=$ alkyl group
CG PET -2004
Hydrocarbons
230168
How many numbers of sigma $(\sigma)$ and pi $(\pi)$ bonds in DDT respectively ?
1 28 and 6
2 29 and 6
3 30 and 6
4 21 and 6
Explanation:
: 1, 1, 1-trichloro -2, $2-\operatorname{di}(4$-chlorophenyl) ethane (DDT) In DDT, number of $\sigma$ bond is 21 and $\pi$ bond is 6.
GUJCET-2022
Hydrocarbons
230171
The resulting solution obtained at the end of electrolysis of concentrated aqueous solution of NaCl....
1 Turns red litmus into blue
2 Turns blue litmus into red
3 Remains colourless with phenolphthalein
4 The colour of red or blue litmus does not change
Explanation:
: Sodium chloride is dissociated and exists as sodium and chloride ions in aqueous solution, electrolysis of sodium chloride is easier in aqueous solution, $\mathrm{NaCl}(\mathrm{aq})+\mathrm{H}_2 \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{Na}^{+}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq})+\frac{1}{2} \mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{Cl}_2 \text { (g) }$ Hence, the resulting solution obtained at the end of electrolysis of concentrated aqueous solution of $\mathrm{NaCl}$ turns red litmus into blue.
GUJCET-2015
Hydrocarbons
230172
Arrange the following in decreasing order of their boiling points
1 $\mathrm{A}>\mathrm{B}>\mathrm{C}>\mathrm{D}$
2 $\mathrm{B}<\mathrm{C}>\mathrm{D}<\mathrm{A}$
3 D $>$ C $>$ A $>$ B
4 $\mathrm{C}>\mathrm{B}>\mathrm{D}>\mathrm{A}$
Explanation:
: The structure of the following hydrocarbon- Boiling point depends upon the number of carbon chain increase boiling point increase. Boiling point decrease when the branching of group increase. So, the order is $\mathrm{C}>\mathrm{B}>\mathrm{D}>\mathrm{A}$
230158
Which one of the following contain isopropyl group?
1 2,2,3,3-Tetramethylpentane
2 2-Methylpentane
3 2,2,3-Trimethylpentane
4 3,3-Dimethylpentane
Explanation:
: The structure of the following - In option (b) have contain isopropyl group
BITSAT - 2009
Hydrocarbons
230165
The reaction between an alkyl halide and sodium metal in dry ether is called
1 Clemmensen reduction
2 Kolbe's reaction
3 Wurtz's reaction
4 Cannizaro's reaction
Explanation:
: The reaction between an alkyl halide and sodium metal in dry ether is called wurtz's reaction. $\mathrm{R}_1 \mathrm{x}+2 \mathrm{Na}+\mathrm{XR}_2 \stackrel{\text { EH`r }}{\longrightarrow} \mathrm{R}_1-\mathrm{R}_2+2 \mathrm{Nax}$ Where, $\mathrm{X}=$ Halide group $\mathrm{R}=$ alkyl group
CG PET -2004
Hydrocarbons
230168
How many numbers of sigma $(\sigma)$ and pi $(\pi)$ bonds in DDT respectively ?
1 28 and 6
2 29 and 6
3 30 and 6
4 21 and 6
Explanation:
: 1, 1, 1-trichloro -2, $2-\operatorname{di}(4$-chlorophenyl) ethane (DDT) In DDT, number of $\sigma$ bond is 21 and $\pi$ bond is 6.
GUJCET-2022
Hydrocarbons
230171
The resulting solution obtained at the end of electrolysis of concentrated aqueous solution of NaCl....
1 Turns red litmus into blue
2 Turns blue litmus into red
3 Remains colourless with phenolphthalein
4 The colour of red or blue litmus does not change
Explanation:
: Sodium chloride is dissociated and exists as sodium and chloride ions in aqueous solution, electrolysis of sodium chloride is easier in aqueous solution, $\mathrm{NaCl}(\mathrm{aq})+\mathrm{H}_2 \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{Na}^{+}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq})+\frac{1}{2} \mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{Cl}_2 \text { (g) }$ Hence, the resulting solution obtained at the end of electrolysis of concentrated aqueous solution of $\mathrm{NaCl}$ turns red litmus into blue.
GUJCET-2015
Hydrocarbons
230172
Arrange the following in decreasing order of their boiling points
1 $\mathrm{A}>\mathrm{B}>\mathrm{C}>\mathrm{D}$
2 $\mathrm{B}<\mathrm{C}>\mathrm{D}<\mathrm{A}$
3 D $>$ C $>$ A $>$ B
4 $\mathrm{C}>\mathrm{B}>\mathrm{D}>\mathrm{A}$
Explanation:
: The structure of the following hydrocarbon- Boiling point depends upon the number of carbon chain increase boiling point increase. Boiling point decrease when the branching of group increase. So, the order is $\mathrm{C}>\mathrm{B}>\mathrm{D}>\mathrm{A}$
230158
Which one of the following contain isopropyl group?
1 2,2,3,3-Tetramethylpentane
2 2-Methylpentane
3 2,2,3-Trimethylpentane
4 3,3-Dimethylpentane
Explanation:
: The structure of the following - In option (b) have contain isopropyl group
BITSAT - 2009
Hydrocarbons
230165
The reaction between an alkyl halide and sodium metal in dry ether is called
1 Clemmensen reduction
2 Kolbe's reaction
3 Wurtz's reaction
4 Cannizaro's reaction
Explanation:
: The reaction between an alkyl halide and sodium metal in dry ether is called wurtz's reaction. $\mathrm{R}_1 \mathrm{x}+2 \mathrm{Na}+\mathrm{XR}_2 \stackrel{\text { EH`r }}{\longrightarrow} \mathrm{R}_1-\mathrm{R}_2+2 \mathrm{Nax}$ Where, $\mathrm{X}=$ Halide group $\mathrm{R}=$ alkyl group
CG PET -2004
Hydrocarbons
230168
How many numbers of sigma $(\sigma)$ and pi $(\pi)$ bonds in DDT respectively ?
1 28 and 6
2 29 and 6
3 30 and 6
4 21 and 6
Explanation:
: 1, 1, 1-trichloro -2, $2-\operatorname{di}(4$-chlorophenyl) ethane (DDT) In DDT, number of $\sigma$ bond is 21 and $\pi$ bond is 6.
GUJCET-2022
Hydrocarbons
230171
The resulting solution obtained at the end of electrolysis of concentrated aqueous solution of NaCl....
1 Turns red litmus into blue
2 Turns blue litmus into red
3 Remains colourless with phenolphthalein
4 The colour of red or blue litmus does not change
Explanation:
: Sodium chloride is dissociated and exists as sodium and chloride ions in aqueous solution, electrolysis of sodium chloride is easier in aqueous solution, $\mathrm{NaCl}(\mathrm{aq})+\mathrm{H}_2 \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{Na}^{+}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq})+\frac{1}{2} \mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{Cl}_2 \text { (g) }$ Hence, the resulting solution obtained at the end of electrolysis of concentrated aqueous solution of $\mathrm{NaCl}$ turns red litmus into blue.
GUJCET-2015
Hydrocarbons
230172
Arrange the following in decreasing order of their boiling points
1 $\mathrm{A}>\mathrm{B}>\mathrm{C}>\mathrm{D}$
2 $\mathrm{B}<\mathrm{C}>\mathrm{D}<\mathrm{A}$
3 D $>$ C $>$ A $>$ B
4 $\mathrm{C}>\mathrm{B}>\mathrm{D}>\mathrm{A}$
Explanation:
: The structure of the following hydrocarbon- Boiling point depends upon the number of carbon chain increase boiling point increase. Boiling point decrease when the branching of group increase. So, the order is $\mathrm{C}>\mathrm{B}>\mathrm{D}>\mathrm{A}$
