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Published on: 30/10/2019
Carbonyl Compounds
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1.
Which of the following represents the correct order of acidity in the given compounds
FCH2COOH > CH3COOH > BrCH2COOH > ClCH2COOH
FCH2COOH > ClCH2COOH > BrCH2COOH > CH3COOH
CH3COOH > ClCH2COOH > FCH2COOH > Br-CH2COOH
Cl CH2COOH > CH3COOH > BrCH2COOH > ICH2COOH
2.
Predict the product Z in the following series of reactions Ethanoic acid \(\overset { { PCI }_{ 5 } }{ \longrightarrow } X\overset { { C }_{ 6 }{ H }_{ 6 } }{ \underset { Anhydrous \ AlCI }-_{3}{ \longrightarrow } } Y\overset { 1){ CH }_{ 3 }MgBr }{ \underset { II){ H }_{ 3 }{ O }^{ + } }{ \longrightarrow } } Z.\)
(CH3)2 C(OH)C6H5
CH3CH(OH)C6H5
CH3CH(OH)CH2- CH3
3.
\({ CH }_{ 2 }={ CH }_{ 2 }\overset { i){ O }_{ 3 } }{ \underset { zn/{ H }_{ 2 }O }{ \longrightarrow } } X\overset { { NH }_{ 3 } }{ \longrightarrow } Y \ 'Y'\) is _______.
Formaldelyde
di acetone ammonia
hexamethylene tetraamine
oxime
4.
Reaction of acetone with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is _______.
Grignard reagent
Sn / HCl
hydrazine in presence of slightly acidic solution
hydrocyanic acid
5.
6.
What are the Cartesian sign conventions for a spherical mirror?
7.
Derive the relation between f and R for a spherical mirror.
8.
A carbonyl compound A having molecular formula C5H10O forms crystalline precipitate with sodium bisulphate and gives positive iodoform test. A does not reduce Fehling solution. Identify A.
9.
What is the action of HCN on
(i) propanone
(ii) 2,4-dichlorobenzaldehyde
iii) ethanal
10.
How will you convert benzaldehyde into the following compounds?
(i) benzophenone
(ii) benzoic acid
(iii) α-hydroxyphenylaceticacid.
11.
Identify X and Y.
\({ CH }_{ 3 }CO{ CH }_{ 2 }{ CH }_{ 2 }COO{ C }_{ 2 }{ H }_{ 5 }\overset { { CH }_{ 3 }MgBr }{ \longrightarrow } X\overset { { H }_{ 3 }{ O }^{ + } }{ \longrightarrow } Y\)
12.
Identify A, B and C
13.
Complete the following reaction
\({ CH }_{ 3 }-{ CH }_{ 2 }-{ CH }_{ 2 }-\underset { \overset { || }{ O } }{ C } -{ CH }_{ 3 }\overset { HO-{ CH }_{ 2 }-{ CH }_{ 2 }-OH }{ \underset { { dry }{ HCl} }{ \longrightarrow } } ?\)
14.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
1.
- I etiect increases the acidity. If electronegativity is high, - I effect is also high.
2.
3.
X - HCHO
Y - (CH2)6N4
4.
(c)
hydrazine in presence of slightly acidic solution
5.
(d)
6.
(i) The Incident light is taken from left to right (i.e. object on the left of mirror).
(ii) All the distances are measured from the pole of the mirror (pole is taken as origin).
(iii) The distances measured to the right of pole along the principal axis are taken as positive.
(iv) The distances measured to the left of pole along the principal axis are taken as negative.
(v) Heights measured in the upward perpendicular direction to the principal axis are taken as positive.
(vi) Heights measured in the downward perpendicular direction to the principal axis, are taken as negative.
7.
(i) C be the centre of curvature of the mirror.
(ii) Consider a light ray parallel to the principal axis is incident on the mirror at M and passes through the principal focus F after reflection. An.
(iii) The line CM is the normal to the mirror at M. Let i be the angle of incidence and the same will be the angle of reflection.
(iv) If MP is the perpendicular from M on the principal axis, then from the geometry.
(v) The angles ∠MCP = i and ∠MFP = 2i
(vi) From right -angle triangles ΔMCP and ΔMFP,
\(tani=\cfrac { PM }{ PC } \) and \(tan2i=\cfrac { PM }{ PF } \)
(vii) As the angles are small, tan i≈i
\(i=\cfrac { PM }{ PC } \) and \(2i=\cfrac { PM }{ PF } \)
(viii) Simplifying
\(2\cfrac { PM }{ PC } =\cfrac { PM }{ PF } ;2PF=PC\)
8.
An carbonyl compound having molecular formula C5H10O giving positive iodoform test. It does not reduce Fehling solution.So it is 2- pentanone.
∴ (A) is 2-pentanone.
9.
(ii) 2,4-dichlorobenzaldehyde.
(iii) ethanal
10.
(ii) benzoic acid
(iii) α - hydroxyphenylaceticacid.
11.
12.
Phenyl Acetic acid
Benzyl Magnesium bromide
13.
2- Pentanone.
14.
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