Carbylamine Test

Q. How many structural isomers are possible for the molecular formula, $C_5{H}_{13}N$ which gives a positive carbylamine test?

Q.

How are xenon fluorides XeF₂, XeF₄ and XeF₆ obtained?

Q.

Difference between benzophenone and acetophenone.

Q. Which of the following shows carbyl amine reaction
A. Aniline B. Ethyl methyl amine

C. Tertiary butyl amine D. Isopropyl amine

The correct answer is

1. B, C

2. A, D

3. A, B, C, D

4. A, C, D

Q. Why doesn't isobutyraldehyde undergo aldol condensation when it has an alpha hydrogen

Q.

Which one of the following can release foul smelling substance on heating with chloroform and ethanolic KOH

1. Ethyl methyl amine

2. 'B' is amide and 'D' is 2⁰amine

3. Ethanamide

4. Methyl isocyanide

Q.

Explain Hoffmann bromamide degradation reaction and write the general equation for the reaction involved.

Q.

Complete and balance the following equation:

${\mathrm{C}}_2{\mathrm{H}}_4+{\mathrm{Br}}_2\to \dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}$

Q. A positive carbylamine test is given by:

1. N, N-Dimethyl aniline
2. 2, 4-Dimethyl aniline
3. N-Methyl-o-methyl aniline
4. p-Methyl benzylamine

Q.

The compound 'C' in the above sequence of reaction is

1. C₆H₅ - CN

2. C₆H₅ - NC

3. C₆H₅ - NH₂

4. C₆H₅ - OH

Q.

Give a chemical test to distinguish between the following pairs of compounds:

Hydrogen chloride gas and Hydrogen sulfide

Q.

Proteins when heated with conc. HNO₃ give a yellow colour. This is

[CPMT 1989]

1. Oxidising test

2. Acid-base test

3. Xanthoprotic test

4. Hoppe's test

Q.

Soda Water Has A pH Value Of _______

Q. The main product of the following reaction is

1. Phenyl cyanide
2. Nitrophenol
3. Aniline
4. Hydroxylamine

Q. What are Spiro compounds

Q.

A certain compound gives negative test with ninhydrin and positive test with Benedict's solution. The compound is

[NCERT 1978; KCET 2000]

1. A lipid

2. An amino acid

3. A protein

4. A monosaccharide

Q. Which of following give positive Fehling solution test?

1. fats
2. protein
3. glucose
4. sucrose

Q. Which of the following will give a positive carbylamine test?

1. N, N-Dimethylaniline
2. 2, 4, 6-Trimethylaniline
3. p-Toluidine
4. p-Methylbenzylamine
5. Ethylmethylamine

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:
Assertion: Alkyl cyanide can be prepared by carbylamine reaction

Reason: Ethyl amine when heated with chloroform in presence of alcoholic KOH, cyanide is formed.

1. If assertion is true but reason is false.
2. If both assertion and reason are true and the reason is the correct explanation of the assertion.
3. If both assertion and reason are true but reason is not the correct explanation of the assertion.
4. If the assertion and reason both are false.

Q.

In the Fischer-Tropsch synthesis of petrol..... and ..... are used as the raw materials

1. CH₄;CH₃OH

2. H₂;CO

3. CH₄;H₂

4. CH₃OH;CO

Q.

In washing powders, certain chemicals are added to impart the under-mentioned properties. Name the chemical used for each purpose.

Impart whiteness

Q. Which of the following compounds give a positive for the carbylamine test?

1. N, N-dimethylaniline
2. N-methyl-o-methylaniline
3. N-methylaniline
4. p-methylbenzylamine

Q. In carbylamine reaction, primary amines react with alkaline $CHC{l}_3$ and the final product is a carbylamine. From start to finish, how many instances of dehydrochlorination takes place?

Q. Which of the following organic compound(s) do not undergo carbylamine reaction?

1. $(C_2{H}_5{)}_{2}NH$
2. $C_2{H}_{5}N{H}_2$
3. $(C_2{H}_5{)}_{3}N$
4. $(C_2{H}_5{)}_4{N}^{+}{I}^{-}$
   

Q. In carbylamine reaction, primary amine reacts with alkaline $CHC{l}_3$ and the final product is a carbylamine. What is the change in oxidation state of $N$ in carbylamine reaction?

Q. $C{H}_2=CHC{H}_{2}CH=C{H}_2\underset{h\nu }{\stackrel{NBS}{\to }}A$
$A$ is:

1. $C{H}_2=CH\underset{Br}{\underset{|}{C}}HCH=C{H}_2$
2. $C{H}_2=CHC{H}_{2}CH=CHBr$
3. $C{H}_2=CHC{H}_2=CHBr$
4. $C{H}_2=CHC{H}_2\underset{Br}{\underset{|}{C}}=C{H}_2$

Q. Assertion :Methyl isocyanide reacts with ozone to from methyl isocyanate. Reason: Methyl isocyanate was responsible for Bhopal tragedy.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. The product formed by the reaction of an aldehyde with a primary amine is :

1. schiff base
2. ketone
3. carboxylic acid
4. aromatic acid

Q.

[BHU 2000; Pb. PMT 2000; Kerala 2003]

1. Benzyl amine

2. Benzyl chloride

3. Phenyl isocyanide

4. None of these

Q. Name an amino acid which is not aromatic.