Which of the following reactions cannot form new carbon-carbon bonds?
1. Reimer-Tiemann reaction
2. Cannizaro reaction
3. Wurtz reaction
4. Friedel-Crafts acylation
Which of the options is correct about product (A)?
1. Product is aromatic
2. Product has a high dipole moment
3. Product has less resonance energy
4. Both A and B
Sandmeyer's reaction described by among the following is:
1. | |
2. | |
3. | |
4. |
The X and Y in the below mentioned reaction are
X | Y | |
1. | Dilute aqueous NaOH, 20 oC | HBr/Acetic acid, 20 oC |
2. | Concentrated alcoholic NaOH, 80 oC | HBr/Acetic acid, 20 oC |
3. | Diluted aqueous NaOH, 20 oC, | Br2 / CHCl3 , 0 oC |
4. | Concentrated alcoholic NaOH, 80 ° C | Br2/CHCl3, 0 oC |
When vinyl chloride is passed through an alcoholic KOH solution, which of the following is correct?
1. It gets dissolved.
2. It forms vinyl alcohol
3. It forms acetylene
4. It has no action
The product (C) in the below-mentioned reaction is:
\(CH_{3}CH_{2}CH_{2}Br \ \xrightarrow[]{\textbf{KOH(alc.)}} \)
\(\ (A) \ \xrightarrow[]{\textbf{HBr}} \ (B) \ \xrightarrow[]{\textbf{KOH(aq}} \ (C)\)
1. | Propene | 2. | Propyne |
3. | Propan-1-ol | 4. | Propan-2-ol |
\(HC\equiv CNa \ + \ Cl-CH_{2}-CH_{2}-CH_{2}-I \ \rightarrow \ (A) \)
The major product (A) in the above reaction is :
1. H-CC-CH2-CH2-CH2-I
2. CH2=CH-CH2-I
3. H-CC-CH2-CH2-CH2-Cl
4. CH2=CH-CH2-Cl
The set of reagents used to produce freon (CCl2F2) are:
1. | C + F2 + Cl2 → |
2. | CH3Cl + F2 → |
3. | \(CCl_4 + HF \ \xrightarrow[]{SbCl_5} \) |
4. | CCl4 + F2 → |
The reactivity order of alkyl halides depends upon:
1. Nature of alkyl group only
2. Nature of halogen atom only
3. Nature of both alkyl group and a halogen atom
4. None of the above
1. | It is inflammable. | 2. | It gives a peroxide. |
3. | It undergoes rapid chlorination. | 4. | It is oxidized to poisonous phosgene. |