Functional Groups

Q.

What is a primary, secondary, and tertiary halide?

Q.

Name the functional groups present in the following compounds: [5 MARKS]

1. ${\text{CH}}_3-{\text{CH}}_2-{\text{CH}}_2-\text{OH}$
2. ${\text{CH}}_3-{\text{CH}}_2-{\text{CH}}_2-\text{COOH}$
3. ${\text{CH}}_3-{\text{CH}}_2-\text{CHO}$
4. ${\text{CH}}_3-\text{CO}-{\text{CH}}_2-{\text{CH}}_3$
5. ${\text{CH}}_3-{\text{CH}}_2-\text{CO-OH}$

Q.

What is the difference between isobutyl and sec-butyl?

Q.

Why there is no alpha-hydrogen in Benzaldehyde?

Q.

The functional group present in propanal is :
(a) $-OH$ (b) $-COOH$ (c) $-CO-$ (d) $-CHO$

Q.

In which of the following compounds $-\mathrm{OH}$ is the functional group?

1. Butanone

2. Butanal

3. Butanol

4. Butanoic acid

Q.

Classify the following compounds as alkanes, alkenes and alkynes. [3 MARKS]

${\text{C}}_5{\text{H}}_{1}2$ , ${\text{C}}_2{\text{H}}_4$, ${\text{C}}_3{\text{H}}_4$, ${\text{C}}_3{\text{H}}_8$, ${\text{C}}_4{\text{H}}_8$, ${\text{C}}_5{\text{H}}_8$

Q.

The functional group which always occurs in the middle of a carbon chain is :
(a) alcohol group (b) aldehyde group (c) carboxyl group (d) ketone group

Q.

State whether the following statement is true or false :
The minimum number of carbon atoms in a ketone molecule is two.

Q.

The heteroatoms present in ${\mathrm{CH}}_3-{\mathrm{CH}}_2—\mathrm{O}—{\mathrm{CH}}_2—{\mathrm{CH}}_2\mathrm{Cl}$ are (i) oxygen (ii) carbon (iii) hydrogen (iv) chlorine.

1. (i) and (ii)

2. (ii) and (iii)

3. (iii) and (iv)

4. (i) and (iv)

Q. (a) What is an alkyl group?
(b) Give the names of any three alkyl groups. How are they formed?

Q.

Which of the following is unsaturated compound?

1. C₃H₇OH

2. C₄H₈

3. CH₃OH

4. C₆H₁₄

Q.

Three organic compounds A, B and C have the following molecular formulae :
A $C_4{H}_8{O}_2$
B $C_4{H}_{10}O$
C $C_4{H}_{8}O$
(a) Which compound contains an alcohol group? Write its name and structural formula.
(b) Which compound contains a carboxyl group? Write its name and structural formula.
(c) Which molecular formula can represent an aldehyde as well as a ketone? Write the names and structural formulae of the aldehyde and ketone represented by this molecular formula.

Q.

What is a functional group in a carbon compound? Identify the functional group present in ${\text{CH}}_3\text{COOH}$ and ${\text{C}}_2{\text{H}}_5\text{OH}$. [3 MARKS]

Q.

The functional group present in butanone is _________.

1. ketone

2. alcohol

3. carboxylic acid

4. aldehyde

Q.

One of the following molecular formulae represents a ketone. This formula is :
(a) $C_5{H}_{12}O$ (b) $C_6{H}_{12}{O}_2$ (c) $C_6{H}_{14}O$ (d) $C_6{H}_{12}O$

Q. Which of the given options is the suffix for ester functional group?

1. -oate
2. -oic acid
3. -ol
4. -al

Q.

One of the following molecular formula can represent two organic compounds having different functional groups : This molecular formula is :
(a) $C_5{H}_{12}O$ (b) $C_5{H}_{10}O$ (c) $C_5{H}_{10}{O}_2$ (d) $C_5{H}_{12}$

Q.

What functional group is $\mathrm{COOH}$ ?

Q. Structure of but-2-ol?

Q.

Identify the functional group present in the following compound and name it according to IUPAC system :
$C{H}_{3}OH$

Q. Question 32
Identify the functional group present in the following compounds

Q.

Butanone is a four-carbon compound having the functional group :
(a) $-COOH$ (b) $-CHO$ (c) $-CO-$ (d) $-OH$

Q. Positional isomerism is a type of structural isomerism, which occurs when the same functional group is in different positions on the same carbon chain.

1. True
2. False

Q. What are the chemical name of $C{H}_{3}COOH$ and chemical name of $C{H}_{3}COONa$

Q.

Give the name and structural formula of an alkyl group.

Q. The functional group present in the given compound is _________.

1. alcohol
2. aldehyde
3. carboxylic acid
4. ketone

Q.

(a) What is the general name of the organic compounds containing the $-\stackrel{O}{\stackrel{||}{C}}-$ group?
(b) Which of the following compounds contains a carboxylic acid group?
$C{H}_{3}OH,C{H}_{3}COOH,C{H}_{3}CHO,C{H}_{3}COC{H}_3$
(c) How would you name the following compound?
$H-\stackrel{H}{\stackrel{|}{C}}=0$

Q.

What is a tosylate group?

Q.

The functional group present in ethanol is

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