230199
The hydrocarbon which decolourises alkaline $\mathrm{KMnO}_4$ solution and also but does not give any precipitate with ammoniacal silver nitrate is
1 Benzene
2 Acetylene
3 Propyne
4 Butyne-2
Explanation:
: In butyne -2 has terminal acidic hydrogen atom to give decolorizes alkaline $\mathrm{KMnO}_4$ solution but does not give any precipitate with ammoniacal silver nitrate. Ammoniacal silver nitrate solution is also known as Toller's reagent in chemical reaction.
J and K CET-(1999)]
Hydrocarbons
230200
What is the chief product obtained when nbutane is treated with bromine in the presence of light at $130^{\circ} \mathrm{C}$ ?
: $\mathrm{Br}_2$ has a much regioselectivity so chief product formed is -2-bromo but - one. $\mathrm{Br}-\mathrm{Br}$ bond cleavage forms $2 \mathrm{Br}$ radicals. One radical reacts with $\mathrm{n}$ butane and a n-butane radicals are formed. This $\mathrm{n}-$ butane radicals abstract a $\mathrm{Br}$ atom form another $\mathrm{Br}-\mathrm{Br}$ Molecule. The reaction proceeds via free radicals mechanism. As $2^{\circ}$ free radical are more stubble than $1^{\circ}$. Hence, is formed
J and K CET-(1998)
Hydrocarbons
230201
Term 'Hexadecane' in petroleum is commonly called as
1 Octane
2 Petrol
3 Cetane
4 LPG
Explanation:
: Hexadecane is also known as cetane it is an alkane hydrocarbon with the chemical formula $\mathrm{C}_{16} \mathrm{H}_{34}$. Hexadecane consists of a chain of 16 carbon atom. Cetane number is a measurement of the quality or performance of diesel fuel. Higher the number, the better the fuel burns within the engine of a vehicle. The cetane number is similar to octane rating. Pure cetane represents the highest purity of diesel fuel possible, and thus has a cetane rating at 100 .
J and K CET-(1997)
Hydrocarbons
230202
At room temperature the eclipsed and staggered forms of ethane can not be isolated because
1 They inter convert rapidly
2 Both the conformers are equally stable
3 The energy difference between the conformers is large
4 There is a large energy barrier of rotation about the $\mathrm{O}$ bond
Explanation:
: At room temperature the eclipsed and staggered forms of ethane cannot be isolated because they inter convert rapidly the energy difference between two conformations of ethane is not so large, so the eclipsed and staggered conformation interconvert rAPidly. Thus, it is impossible to isolates these forms at room temperature.
J and K CET-(1997)]
Hydrocarbons
230267
Which compound cannot be formed from Wurtz reaction?
1 Propane
2 Butane
3 Ethane
4 Methane
Explanation:
: In Wurtz reaction, alkyl halides are combined and produce higher alkane and a metal hailide compound. Methane is simplest alkane, which is only one carbon atom, will not be formed by Wurtz reaction. Compounds containing two or more carbon atoms are prepared by Wurtz reaction. Thus, methane, $\mathrm{CH}_4$, cannot be prepared by Wurtz reaction.
230199
The hydrocarbon which decolourises alkaline $\mathrm{KMnO}_4$ solution and also but does not give any precipitate with ammoniacal silver nitrate is
1 Benzene
2 Acetylene
3 Propyne
4 Butyne-2
Explanation:
: In butyne -2 has terminal acidic hydrogen atom to give decolorizes alkaline $\mathrm{KMnO}_4$ solution but does not give any precipitate with ammoniacal silver nitrate. Ammoniacal silver nitrate solution is also known as Toller's reagent in chemical reaction.
J and K CET-(1999)]
Hydrocarbons
230200
What is the chief product obtained when nbutane is treated with bromine in the presence of light at $130^{\circ} \mathrm{C}$ ?
: $\mathrm{Br}_2$ has a much regioselectivity so chief product formed is -2-bromo but - one. $\mathrm{Br}-\mathrm{Br}$ bond cleavage forms $2 \mathrm{Br}$ radicals. One radical reacts with $\mathrm{n}$ butane and a n-butane radicals are formed. This $\mathrm{n}-$ butane radicals abstract a $\mathrm{Br}$ atom form another $\mathrm{Br}-\mathrm{Br}$ Molecule. The reaction proceeds via free radicals mechanism. As $2^{\circ}$ free radical are more stubble than $1^{\circ}$. Hence, is formed
J and K CET-(1998)
Hydrocarbons
230201
Term 'Hexadecane' in petroleum is commonly called as
1 Octane
2 Petrol
3 Cetane
4 LPG
Explanation:
: Hexadecane is also known as cetane it is an alkane hydrocarbon with the chemical formula $\mathrm{C}_{16} \mathrm{H}_{34}$. Hexadecane consists of a chain of 16 carbon atom. Cetane number is a measurement of the quality or performance of diesel fuel. Higher the number, the better the fuel burns within the engine of a vehicle. The cetane number is similar to octane rating. Pure cetane represents the highest purity of diesel fuel possible, and thus has a cetane rating at 100 .
J and K CET-(1997)
Hydrocarbons
230202
At room temperature the eclipsed and staggered forms of ethane can not be isolated because
1 They inter convert rapidly
2 Both the conformers are equally stable
3 The energy difference between the conformers is large
4 There is a large energy barrier of rotation about the $\mathrm{O}$ bond
Explanation:
: At room temperature the eclipsed and staggered forms of ethane cannot be isolated because they inter convert rapidly the energy difference between two conformations of ethane is not so large, so the eclipsed and staggered conformation interconvert rAPidly. Thus, it is impossible to isolates these forms at room temperature.
J and K CET-(1997)]
Hydrocarbons
230267
Which compound cannot be formed from Wurtz reaction?
1 Propane
2 Butane
3 Ethane
4 Methane
Explanation:
: In Wurtz reaction, alkyl halides are combined and produce higher alkane and a metal hailide compound. Methane is simplest alkane, which is only one carbon atom, will not be formed by Wurtz reaction. Compounds containing two or more carbon atoms are prepared by Wurtz reaction. Thus, methane, $\mathrm{CH}_4$, cannot be prepared by Wurtz reaction.
230199
The hydrocarbon which decolourises alkaline $\mathrm{KMnO}_4$ solution and also but does not give any precipitate with ammoniacal silver nitrate is
1 Benzene
2 Acetylene
3 Propyne
4 Butyne-2
Explanation:
: In butyne -2 has terminal acidic hydrogen atom to give decolorizes alkaline $\mathrm{KMnO}_4$ solution but does not give any precipitate with ammoniacal silver nitrate. Ammoniacal silver nitrate solution is also known as Toller's reagent in chemical reaction.
J and K CET-(1999)]
Hydrocarbons
230200
What is the chief product obtained when nbutane is treated with bromine in the presence of light at $130^{\circ} \mathrm{C}$ ?
: $\mathrm{Br}_2$ has a much regioselectivity so chief product formed is -2-bromo but - one. $\mathrm{Br}-\mathrm{Br}$ bond cleavage forms $2 \mathrm{Br}$ radicals. One radical reacts with $\mathrm{n}$ butane and a n-butane radicals are formed. This $\mathrm{n}-$ butane radicals abstract a $\mathrm{Br}$ atom form another $\mathrm{Br}-\mathrm{Br}$ Molecule. The reaction proceeds via free radicals mechanism. As $2^{\circ}$ free radical are more stubble than $1^{\circ}$. Hence, is formed
J and K CET-(1998)
Hydrocarbons
230201
Term 'Hexadecane' in petroleum is commonly called as
1 Octane
2 Petrol
3 Cetane
4 LPG
Explanation:
: Hexadecane is also known as cetane it is an alkane hydrocarbon with the chemical formula $\mathrm{C}_{16} \mathrm{H}_{34}$. Hexadecane consists of a chain of 16 carbon atom. Cetane number is a measurement of the quality or performance of diesel fuel. Higher the number, the better the fuel burns within the engine of a vehicle. The cetane number is similar to octane rating. Pure cetane represents the highest purity of diesel fuel possible, and thus has a cetane rating at 100 .
J and K CET-(1997)
Hydrocarbons
230202
At room temperature the eclipsed and staggered forms of ethane can not be isolated because
1 They inter convert rapidly
2 Both the conformers are equally stable
3 The energy difference between the conformers is large
4 There is a large energy barrier of rotation about the $\mathrm{O}$ bond
Explanation:
: At room temperature the eclipsed and staggered forms of ethane cannot be isolated because they inter convert rapidly the energy difference between two conformations of ethane is not so large, so the eclipsed and staggered conformation interconvert rAPidly. Thus, it is impossible to isolates these forms at room temperature.
J and K CET-(1997)]
Hydrocarbons
230267
Which compound cannot be formed from Wurtz reaction?
1 Propane
2 Butane
3 Ethane
4 Methane
Explanation:
: In Wurtz reaction, alkyl halides are combined and produce higher alkane and a metal hailide compound. Methane is simplest alkane, which is only one carbon atom, will not be formed by Wurtz reaction. Compounds containing two or more carbon atoms are prepared by Wurtz reaction. Thus, methane, $\mathrm{CH}_4$, cannot be prepared by Wurtz reaction.
230199
The hydrocarbon which decolourises alkaline $\mathrm{KMnO}_4$ solution and also but does not give any precipitate with ammoniacal silver nitrate is
1 Benzene
2 Acetylene
3 Propyne
4 Butyne-2
Explanation:
: In butyne -2 has terminal acidic hydrogen atom to give decolorizes alkaline $\mathrm{KMnO}_4$ solution but does not give any precipitate with ammoniacal silver nitrate. Ammoniacal silver nitrate solution is also known as Toller's reagent in chemical reaction.
J and K CET-(1999)]
Hydrocarbons
230200
What is the chief product obtained when nbutane is treated with bromine in the presence of light at $130^{\circ} \mathrm{C}$ ?
: $\mathrm{Br}_2$ has a much regioselectivity so chief product formed is -2-bromo but - one. $\mathrm{Br}-\mathrm{Br}$ bond cleavage forms $2 \mathrm{Br}$ radicals. One radical reacts with $\mathrm{n}$ butane and a n-butane radicals are formed. This $\mathrm{n}-$ butane radicals abstract a $\mathrm{Br}$ atom form another $\mathrm{Br}-\mathrm{Br}$ Molecule. The reaction proceeds via free radicals mechanism. As $2^{\circ}$ free radical are more stubble than $1^{\circ}$. Hence, is formed
J and K CET-(1998)
Hydrocarbons
230201
Term 'Hexadecane' in petroleum is commonly called as
1 Octane
2 Petrol
3 Cetane
4 LPG
Explanation:
: Hexadecane is also known as cetane it is an alkane hydrocarbon with the chemical formula $\mathrm{C}_{16} \mathrm{H}_{34}$. Hexadecane consists of a chain of 16 carbon atom. Cetane number is a measurement of the quality or performance of diesel fuel. Higher the number, the better the fuel burns within the engine of a vehicle. The cetane number is similar to octane rating. Pure cetane represents the highest purity of diesel fuel possible, and thus has a cetane rating at 100 .
J and K CET-(1997)
Hydrocarbons
230202
At room temperature the eclipsed and staggered forms of ethane can not be isolated because
1 They inter convert rapidly
2 Both the conformers are equally stable
3 The energy difference between the conformers is large
4 There is a large energy barrier of rotation about the $\mathrm{O}$ bond
Explanation:
: At room temperature the eclipsed and staggered forms of ethane cannot be isolated because they inter convert rapidly the energy difference between two conformations of ethane is not so large, so the eclipsed and staggered conformation interconvert rAPidly. Thus, it is impossible to isolates these forms at room temperature.
J and K CET-(1997)]
Hydrocarbons
230267
Which compound cannot be formed from Wurtz reaction?
1 Propane
2 Butane
3 Ethane
4 Methane
Explanation:
: In Wurtz reaction, alkyl halides are combined and produce higher alkane and a metal hailide compound. Methane is simplest alkane, which is only one carbon atom, will not be formed by Wurtz reaction. Compounds containing two or more carbon atoms are prepared by Wurtz reaction. Thus, methane, $\mathrm{CH}_4$, cannot be prepared by Wurtz reaction.
230199
The hydrocarbon which decolourises alkaline $\mathrm{KMnO}_4$ solution and also but does not give any precipitate with ammoniacal silver nitrate is
1 Benzene
2 Acetylene
3 Propyne
4 Butyne-2
Explanation:
: In butyne -2 has terminal acidic hydrogen atom to give decolorizes alkaline $\mathrm{KMnO}_4$ solution but does not give any precipitate with ammoniacal silver nitrate. Ammoniacal silver nitrate solution is also known as Toller's reagent in chemical reaction.
J and K CET-(1999)]
Hydrocarbons
230200
What is the chief product obtained when nbutane is treated with bromine in the presence of light at $130^{\circ} \mathrm{C}$ ?
: $\mathrm{Br}_2$ has a much regioselectivity so chief product formed is -2-bromo but - one. $\mathrm{Br}-\mathrm{Br}$ bond cleavage forms $2 \mathrm{Br}$ radicals. One radical reacts with $\mathrm{n}$ butane and a n-butane radicals are formed. This $\mathrm{n}-$ butane radicals abstract a $\mathrm{Br}$ atom form another $\mathrm{Br}-\mathrm{Br}$ Molecule. The reaction proceeds via free radicals mechanism. As $2^{\circ}$ free radical are more stubble than $1^{\circ}$. Hence, is formed
J and K CET-(1998)
Hydrocarbons
230201
Term 'Hexadecane' in petroleum is commonly called as
1 Octane
2 Petrol
3 Cetane
4 LPG
Explanation:
: Hexadecane is also known as cetane it is an alkane hydrocarbon with the chemical formula $\mathrm{C}_{16} \mathrm{H}_{34}$. Hexadecane consists of a chain of 16 carbon atom. Cetane number is a measurement of the quality or performance of diesel fuel. Higher the number, the better the fuel burns within the engine of a vehicle. The cetane number is similar to octane rating. Pure cetane represents the highest purity of diesel fuel possible, and thus has a cetane rating at 100 .
J and K CET-(1997)
Hydrocarbons
230202
At room temperature the eclipsed and staggered forms of ethane can not be isolated because
1 They inter convert rapidly
2 Both the conformers are equally stable
3 The energy difference between the conformers is large
4 There is a large energy barrier of rotation about the $\mathrm{O}$ bond
Explanation:
: At room temperature the eclipsed and staggered forms of ethane cannot be isolated because they inter convert rapidly the energy difference between two conformations of ethane is not so large, so the eclipsed and staggered conformation interconvert rAPidly. Thus, it is impossible to isolates these forms at room temperature.
J and K CET-(1997)]
Hydrocarbons
230267
Which compound cannot be formed from Wurtz reaction?
1 Propane
2 Butane
3 Ethane
4 Methane
Explanation:
: In Wurtz reaction, alkyl halides are combined and produce higher alkane and a metal hailide compound. Methane is simplest alkane, which is only one carbon atom, will not be formed by Wurtz reaction. Compounds containing two or more carbon atoms are prepared by Wurtz reaction. Thus, methane, $\mathrm{CH}_4$, cannot be prepared by Wurtz reaction.
is formed