Condensation Reaction
Trending Questions
Q. Which of the following reaction is the reverse of condensation reaction ?
- Lock and key hypothesis
- Dehydration reaction
- Hydrolysis
- Glycogen formation
Q. 21 Why 2, 4, 6-trinitrophenol is produced at lower yield in reaction between concentrated HNO3 and phenol?
Q.
Condensation reactions are those in which two organic reactions are replaced with each other
True
False
Q. What will be the products in the following r×n : ifentify
2 nitroaniline ----Ac2O----:A:
:A:-----Br2/CH3COOH------- :B:
:B:-----H2O/H+------:C:
:C:-----NaNO2/HCL/∆ ---- :D:
:D:------ EtOH/∆-------:E:
Identify A , B , C , D , E
Q. ![](https://search-static.byjusweb.com/question-images/byjus/ckeditor_assets/pictures/1039548/original_72._question.png)
![](https://search-static.byjusweb.com/question-images/byjus/ckeditor_assets/pictures/1039548/original_72._question.png)
- 2-butene
- 1-butyne
- 2-butyne
- Both b and c
Q. Which of the following statements are true for condensation reactions?
- A water molecule is always released
- Different types of reactant molecules are required
- The reactant molecules need to be similar
- None of these
Q.
Which of the following is condensation reaction?
None of these
CH3−O||C−H+CH3CHO aq−−−−→NaOHCH3−OH|CH−CH2CHO
ph−CH||o+H−C||O−HAq.alc−−−→KCN H−CH|OH−C||O−ph
Q. 2, 3-Dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid ?
- (CH3)2CH−CH2−CH=CH2
- (CH3)3C−CH=CH2
- (CH3)2C=CH−CH2−CH3
Q. Choose the correct answer among the alternatives given :
C8H8Cl2(A)Aq.NaOH−−−−−−→(B)Mildreduction−−−−−−−−−→(C)I2/NaOH−−−−−−→iodoform+acidsalt(D)
In the given sequence of reaction, what would be the structure of (A)?
C8H8Cl2(A)Aq.NaOH−−−−−−→(B)Mildreduction−−−−−−−−−→(C)I2/NaOH−−−−−−→iodoform+acidsalt(D)
In the given sequence of reaction, what would be the structure of (A)?
- PhCH(OH)CH3
- PhCOONa
- PhC(Cl)2CH3
- PhCOCH3
Q. Which one of the following would not give an appreciable yield of Claisen condensation product?
- Ethyl hexanoate
- Ethyl 3-methyl hexanoate
- Ethyl 2-methyl hexanoate
- Ethyl 4-methyl hexanoate
Q. Light blue coloured compound (A) on heating will convert into black coloured compound (B), which reacts with glucose and gives red compound (C). (A) reacts with ammonium hydroxide in excess of ammonium sulphate and gives blue compound (D). What is (A), (B), (C) and (D)?
- [Cu(NH3)4]SO4, CuO, Cu2O, CuSO4
- CuSO4, CuO, Cu2O, Cu(OH)2
- Cu(OH)2, Cu2O, CuO, [Cu(NH3)4]SO4
- Cu(OH)2.CuO, Cu2O, [Cu(NH3)4]SO4
Q. Match the reactions in List I with appropriate type of steps/reactive intermediate involved in these reactions as given in List II
List I List II (I) \( \stackrel{\text { ag. NaOH }}{\longrightarrow} \) (p) Nucleophilic substitution (II) \( \stackrel{ CH _{3} MgI }{\longrightarrow} \) (q) Electrophilic substitution (III) \( \stackrel{ H _{2} SO _{4}}{\longrightarrow} \) (r) Dehydration (IV) (s) Nucleophilic addition (t) Carbanion
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1557929/original_15.png)
Which of the following option has the correct combination considering List-I and List – II ?
List I List II (I) \( \stackrel{\text { ag. NaOH }}{\longrightarrow} \) (p) Nucleophilic substitution (II) \( \stackrel{ CH _{3} MgI }{\longrightarrow} \) (q) Electrophilic substitution (III) \( \stackrel{ H _{2} SO _{4}}{\longrightarrow} \) (r) Dehydration (IV) (s) Nucleophilic addition (t) Carbanion
Q. Consider the following reaction
Product P of the reaction is:
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/639817/original_26q.png)
Q.
Find product X for the given reaction.
![1970491_5ca09e9caef34e12a6601aad85d0571f.png](https://search-static.byjusweb.com/question-images/toppr_ext/questions/1970491_5ca09e9caef34e12a6601aad85d0571f.png)
![1970491_5ca09e9caef34e12a6601aad85d0571f.png](https://search-static.byjusweb.com/question-images/toppr_ext/questions/1970491_5ca09e9caef34e12a6601aad85d0571f.png)
- None of the above
- p-Deuteratedethylbenzene
- m-Deuteratedethylbenzene
- o-Deuteratedethylbenzene
Q. ![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/687710/original_12q.png)
The major product 'B' of the reaction is:
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/687710/original_12q.png)
The major product 'B' of the reaction is:
Q. Base hydrolysis of an ester with NaOH gives a carboxylic acid whose sodium salt on Kolbe's electrolysis yields ethane. The ester is
- ethyl methanoate
- methyl ethanoate
- phenyl benzoate
- ethyl propanoate
Q. what happens when chloroform is treated with aqueous solution of caustic potash?
Q. On reaction of MeMgBr with HCN , the product will be methane or acetaldehyde ?
Q. For the acid-catalysed hydrolysis of an ester given below, which of the following reaction stage flow of electrons is not shown correctly:
![699241_b46d1c079184456c97614038eb7c2978.PNG](https://search-static.byjusweb.com/question-images/toppr_ext/questions/699241_b46d1c079184456c97614038eb7c2978.PNG)
- Stage 2
- Stage 1
- Stage 3
- Stage 4
Q. Which of the following statements are true for condensation reactions?
- A water molecule is always released
- Different types of reactant molecules are required
- The reactant molecules need to be similar
- None of these
Q. Consider the following reaction
Product P of the reaction is:
![](https://search-static.byjusweb.com/question-images/byjus/infinitestudent-images/ckeditor_assets/pictures/639817/original_26q.png)
Q. 8) An organic compound A having molecular formula C4 H8 on treatment with dil H2 SO4 gives B, B on treatment with conc. HCI and anhydrous ZnCI2 gives C and on treatment with sodium ethoxide gives back A . Identity the compounds A, B and C and write the equation involved.
Q.
Condensation reactions are those in which two organic reactions are replaced with each other
True
False