NEET Test Series from KOTA - 10 Papers In MS WORD
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ALCOHOLS, PHENOLS AND ETHER
15038
Which of the following do not contain an acyl group
1 Acid chloride
2 Amide
3 Ester
4 Ether
Explanation:
Acid chloride is \(RCOCl\), Amide is \(RCONH _2\), Ester is \(RCOOR\), and ether is \(ROR\) Acyl group has the formula \(RCO-\). Hence, ether do not contain acyl group.
ALCOHOLS, PHENOLS AND ETHER
15039
Name of \({(C{H_3})_2}HC - O - C{H_2} - C{H_2} - C{H_3}\) is
1 Isopropyl propyl ether
2 Dipropyl ether
3 Di-isopropyl ether
4 Isopropyl propyl ketone
Explanation:
In the given compound, the groups attached to \(- O -\) group are propyl and isopropyl. Thus, the IUPAC name of the compound will be: Isopropyl propyl ether
ALCOHOLS, PHENOLS AND ETHER
15040
Acetals are
1 Ketones
2 Diethers
3 Aldehyde
4 Hydroxy aldehydes
Explanation:
A ketone is a functional group with the structure \(R C(=0) R\).Diether is a compound containing two atoms of oxygen with ether \((C-O-C)\) linkages.An aldehyde is a compound containing a functional group with the structure \(- CHO\) An aldol is a hydroxy ketone or aldehyde with formula \(R _1- C ( OH )- CR _2-\) \(C (= O )- R _3\)An acetal is a functional group with the connectivity \(R _2- C -( OR )_2\). Hence, it is a diether.
ALCOHOLS, PHENOLS AND ETHER
15041
In ethers, the \(C -O -C\) bond angle is ........ \(^o\)
1 \({180}\)
2 \({90}\)
3 \({110}\)
4 \({160}\)
Explanation:
Oxygen atom in ether is \(sp ^3\) hybridised, therefore has tetrahedral geometry where two positions are occupied by lone pair of electrons and the other two by the alkyl groups in ether. The bond angle in regular tetrahedral is \(109^{\circ} 28^{\prime}\). In general, the lone pairs on \(O\) tend to repel the bond pairs and results in lower bond angles than \(109^{\circ}\) but in ethers the \(C - O - C\) bond angle is slightly more than this i.e nearly \(110^{\circ}\). This is because of the presence of bulky alkyl group on \(O\) atom that repel each other and counterbalance the repulsion due to lone pair on \(O\) atom on bond pairs and results in bond angle slightly greater than tetrahedral angle.Thus, C-O-C bond angle in ether is about \(110^{\circ}\).
15038
Which of the following do not contain an acyl group
1 Acid chloride
2 Amide
3 Ester
4 Ether
Explanation:
Acid chloride is \(RCOCl\), Amide is \(RCONH _2\), Ester is \(RCOOR\), and ether is \(ROR\) Acyl group has the formula \(RCO-\). Hence, ether do not contain acyl group.
ALCOHOLS, PHENOLS AND ETHER
15039
Name of \({(C{H_3})_2}HC - O - C{H_2} - C{H_2} - C{H_3}\) is
1 Isopropyl propyl ether
2 Dipropyl ether
3 Di-isopropyl ether
4 Isopropyl propyl ketone
Explanation:
In the given compound, the groups attached to \(- O -\) group are propyl and isopropyl. Thus, the IUPAC name of the compound will be: Isopropyl propyl ether
ALCOHOLS, PHENOLS AND ETHER
15040
Acetals are
1 Ketones
2 Diethers
3 Aldehyde
4 Hydroxy aldehydes
Explanation:
A ketone is a functional group with the structure \(R C(=0) R\).Diether is a compound containing two atoms of oxygen with ether \((C-O-C)\) linkages.An aldehyde is a compound containing a functional group with the structure \(- CHO\) An aldol is a hydroxy ketone or aldehyde with formula \(R _1- C ( OH )- CR _2-\) \(C (= O )- R _3\)An acetal is a functional group with the connectivity \(R _2- C -( OR )_2\). Hence, it is a diether.
ALCOHOLS, PHENOLS AND ETHER
15041
In ethers, the \(C -O -C\) bond angle is ........ \(^o\)
1 \({180}\)
2 \({90}\)
3 \({110}\)
4 \({160}\)
Explanation:
Oxygen atom in ether is \(sp ^3\) hybridised, therefore has tetrahedral geometry where two positions are occupied by lone pair of electrons and the other two by the alkyl groups in ether. The bond angle in regular tetrahedral is \(109^{\circ} 28^{\prime}\). In general, the lone pairs on \(O\) tend to repel the bond pairs and results in lower bond angles than \(109^{\circ}\) but in ethers the \(C - O - C\) bond angle is slightly more than this i.e nearly \(110^{\circ}\). This is because of the presence of bulky alkyl group on \(O\) atom that repel each other and counterbalance the repulsion due to lone pair on \(O\) atom on bond pairs and results in bond angle slightly greater than tetrahedral angle.Thus, C-O-C bond angle in ether is about \(110^{\circ}\).
15038
Which of the following do not contain an acyl group
1 Acid chloride
2 Amide
3 Ester
4 Ether
Explanation:
Acid chloride is \(RCOCl\), Amide is \(RCONH _2\), Ester is \(RCOOR\), and ether is \(ROR\) Acyl group has the formula \(RCO-\). Hence, ether do not contain acyl group.
ALCOHOLS, PHENOLS AND ETHER
15039
Name of \({(C{H_3})_2}HC - O - C{H_2} - C{H_2} - C{H_3}\) is
1 Isopropyl propyl ether
2 Dipropyl ether
3 Di-isopropyl ether
4 Isopropyl propyl ketone
Explanation:
In the given compound, the groups attached to \(- O -\) group are propyl and isopropyl. Thus, the IUPAC name of the compound will be: Isopropyl propyl ether
ALCOHOLS, PHENOLS AND ETHER
15040
Acetals are
1 Ketones
2 Diethers
3 Aldehyde
4 Hydroxy aldehydes
Explanation:
A ketone is a functional group with the structure \(R C(=0) R\).Diether is a compound containing two atoms of oxygen with ether \((C-O-C)\) linkages.An aldehyde is a compound containing a functional group with the structure \(- CHO\) An aldol is a hydroxy ketone or aldehyde with formula \(R _1- C ( OH )- CR _2-\) \(C (= O )- R _3\)An acetal is a functional group with the connectivity \(R _2- C -( OR )_2\). Hence, it is a diether.
ALCOHOLS, PHENOLS AND ETHER
15041
In ethers, the \(C -O -C\) bond angle is ........ \(^o\)
1 \({180}\)
2 \({90}\)
3 \({110}\)
4 \({160}\)
Explanation:
Oxygen atom in ether is \(sp ^3\) hybridised, therefore has tetrahedral geometry where two positions are occupied by lone pair of electrons and the other two by the alkyl groups in ether. The bond angle in regular tetrahedral is \(109^{\circ} 28^{\prime}\). In general, the lone pairs on \(O\) tend to repel the bond pairs and results in lower bond angles than \(109^{\circ}\) but in ethers the \(C - O - C\) bond angle is slightly more than this i.e nearly \(110^{\circ}\). This is because of the presence of bulky alkyl group on \(O\) atom that repel each other and counterbalance the repulsion due to lone pair on \(O\) atom on bond pairs and results in bond angle slightly greater than tetrahedral angle.Thus, C-O-C bond angle in ether is about \(110^{\circ}\).
15038
Which of the following do not contain an acyl group
1 Acid chloride
2 Amide
3 Ester
4 Ether
Explanation:
Acid chloride is \(RCOCl\), Amide is \(RCONH _2\), Ester is \(RCOOR\), and ether is \(ROR\) Acyl group has the formula \(RCO-\). Hence, ether do not contain acyl group.
ALCOHOLS, PHENOLS AND ETHER
15039
Name of \({(C{H_3})_2}HC - O - C{H_2} - C{H_2} - C{H_3}\) is
1 Isopropyl propyl ether
2 Dipropyl ether
3 Di-isopropyl ether
4 Isopropyl propyl ketone
Explanation:
In the given compound, the groups attached to \(- O -\) group are propyl and isopropyl. Thus, the IUPAC name of the compound will be: Isopropyl propyl ether
ALCOHOLS, PHENOLS AND ETHER
15040
Acetals are
1 Ketones
2 Diethers
3 Aldehyde
4 Hydroxy aldehydes
Explanation:
A ketone is a functional group with the structure \(R C(=0) R\).Diether is a compound containing two atoms of oxygen with ether \((C-O-C)\) linkages.An aldehyde is a compound containing a functional group with the structure \(- CHO\) An aldol is a hydroxy ketone or aldehyde with formula \(R _1- C ( OH )- CR _2-\) \(C (= O )- R _3\)An acetal is a functional group with the connectivity \(R _2- C -( OR )_2\). Hence, it is a diether.
ALCOHOLS, PHENOLS AND ETHER
15041
In ethers, the \(C -O -C\) bond angle is ........ \(^o\)
1 \({180}\)
2 \({90}\)
3 \({110}\)
4 \({160}\)
Explanation:
Oxygen atom in ether is \(sp ^3\) hybridised, therefore has tetrahedral geometry where two positions are occupied by lone pair of electrons and the other two by the alkyl groups in ether. The bond angle in regular tetrahedral is \(109^{\circ} 28^{\prime}\). In general, the lone pairs on \(O\) tend to repel the bond pairs and results in lower bond angles than \(109^{\circ}\) but in ethers the \(C - O - C\) bond angle is slightly more than this i.e nearly \(110^{\circ}\). This is because of the presence of bulky alkyl group on \(O\) atom that repel each other and counterbalance the repulsion due to lone pair on \(O\) atom on bond pairs and results in bond angle slightly greater than tetrahedral angle.Thus, C-O-C bond angle in ether is about \(110^{\circ}\).
