Unsaturated Hydrocarbons

Q.

The IUPAC name of ${\mathrm{CH}}_2=\mathrm{CHCHOH}-{\mathrm{CH}}_2\mathrm{CHO}$ is_______________.

Q.

Which of the following is the correct structure of 4-bromo-3-methyl but-1-ene?

1. $\mathrm{Br}-\mathrm{CH}=\mathrm{C}{\left({\mathrm{CH}}_3\right)}_2$

2. ${\mathrm{CH}}_3-\mathrm{C}\left({\mathrm{CH}}_3\right)={\mathrm{CHCH}}_2-\mathrm{Br}$

3. ${\mathrm{CH}}_2=\mathrm{CH}-\mathrm{CH}\left({\mathrm{CH}}_3\right)-{\mathrm{CH}}_2\mathrm{Br}$

4. ${\mathrm{CH}}_2=\mathrm{C}\left({\mathrm{CH}}_3\right){\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{Br}$

Q. 27. In CH3-CH-NH2-CH=CH2, the compound is named 3-Amino but-1-ene. Why is the Carbon atom attached with -NH2 group numbered 3 and not 2, as according to order of preference-NH2 group should come first than double bond?

Q.

$C{H}_3-\underset{C{H}_2-C{H}_3}{\underset{|}{C}}=CH-C{H}_2-C{H}_2-C{H}_3$

1. 2-Ethyl-2-hexene

2. 2-Ethyl-3-hexene

3. 3-Methyl-2-hexene

4. 3-Methyl-3-heptene

Q.

Write the name of the following compound :

${\mathrm{H}}_3\mathrm{C}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{C}\equiv \mathrm{C}-\mathrm{H}$

Q. The formula of carbon tetrachloride is:

1. $CHC{l}_3$
2. $CC{l}_4$
3. $C{H}_{2}C{l}_4$
4. $C{H}_{3}Cl$

Q. Which of the following molecule has no dative bond 1)CO 2)CO3^2- 3)SO4^2- 4)all of these

Q. Write the structures of fragments produced on complete hydrolysis of 𝐷𝑁𝐴. How are they linked in 𝐷𝑁𝐴 molecule? Draw a diagram to show pairing of nucleotide bases in double helix of 𝐷𝑁𝐴.

Q.

What is the correct IUPAC name of the compound?

$C{H}_2=CH-C{H}_2-C\equiv CH$?

1. 1, 4-Pentenyne

2. Pent-1-en-4-yne

3. Pent-1-yn-4-ene

4. 1, 4-Pentynene

Q. Draw complete structure of the given compound (using hydrogen-carbon bonds).

Q. Which of the following is a $1^o$ amine?

1. $(C{H}_3{)}_{3}CN{H}_2$
2. $C_6{H}_{5}NHC{H}_3$
3. $C{H}_{3}NHCH(C{H}_3{)}_2$
4. $(C{H}_{2}C{H}_2{)}_{2}NC{H}_3$

Q. IUPAC name of the following is $C{H}_2=CH-C{H}_2-C{H}_2-C\equiv CH$

1. 1, 5-hexenyne
2. 1-hexyne-5-ene
3. 1-hexene-5-yne
4. 1, 5-hexynene

Q. Find the product when 1-propyl-cyclopent-1-en-2-ol reacts with $O_3$, ${\left(C{H}_3\right)}_{2}S$.

Q. 62.In CH3-CH-NH2-CH=CH2, the compound is named 3-Amino but-1-ene. Why is the Carbon atom attached with -NH2 group numbered 3 and not 2, as according to order of preference-NH2 group should come first than double bond?

Q. The correct IUPAC name of the compound is:

1. 3, 3-Diethyl-4-methyl-5-(1-methylethyl) octane
2. 6, 6-Diethyl-4-methyl-5-isopropyloctane
3. 6, 6-Diethyl-4-isopropyl-5-methyloctane
4. 6.6-Diethyl-3-methyl-5-(1-methylethyl) octane

Q. The structure of the third member of the alkyne series is:

1. $H-C-C-CH=C-H_2$
2. $H-C\equiv C-C\equiv C-H$
3. $H-C\equiv C-H$
4. $H-C\equiv C-C{H}_3$
5. $H-C\equiv C-C{H}_{2}C{H}_3$

Q. The IUPAC name of the following structure $C{H}_3-CH=C\left(C{H}_3\right)-C\equiv C-C{H}_3$ is:

1. 3-methylhept-4-yn-2-ene
2. 3-methylhex-2-en-4-yne
3. 4-methylhept-4-en-4-yne
4. none of these

Q.

What is the IUPAC name of the following compound?
$C{H}_3-C{H}_2-\underset{C{H}_3}{\underset{|}{C}}=CH-C{H}_2-\stackrel{C{H}_3}{\stackrel{|}{C}H}-C{H}_2-C{H}_3$

1. 3, 6-Dimethyl-3-octene

2. 3, 6-Dimethyl-3-octene

3. 2-Ethyl-5-methyl-2-heptene

4. None of the above

Q.

IUPAC name of the following compound is $C{H}_3-CH=CH-C\equiv H$?

1. 5-Pentyn-3-ene

2. 3-Penten-1-yne

3. 1-Pentyn-3-ene

4. None of these

Q. Write the IUPAC name of the following compound?

Q. IUPAC name of the $C{H}_3-CH=C\left(C{H}_{2}C{H}_{2}C{H}_3\right)-C{H}_2-C{H}_3$ will be:

1. 3-propyl-2-hexene
2. 3-ethyl-2-hexene
3. 3-propyl-3-hexene
4. 4-ethyl-hexene

Q. The IUPAC name for the $C{H}_3-\stackrel{\underset{||}{O}}{C}-C{H}_2-C{H}_2-\stackrel{\underset{||}{O}}{C}-OH$ :

1. 1-hydroxypentane-1, 4, -dione
2. 1, 4-dioxopentanol
3. 4-oxopentanoic acid
4. 1-carboxybutan-3-one

Q. For the reaction: $7A+13B+15C\to 17P$
If 15 moles of A, 26 moles of B and 30.5 moles of C are taken initially, then the limiting reagent is:

1. B
2. A
3. C
4. None of these

Q. The reaction of vinyl chloride with hydrogen iodide to give 1-chloro-1-iodoethane follows:

1. Markovnikov's rule
2. anti Markovnikov's rule
3. none of these
4. Zaitsev rule

Q.

1. 2 - methyl - 3 - butenoic acid
2. 2 - methyl - 2 - butenoic acid
3. 3 - methyl -3 - butenoic acid
4. 3- methylbut-2-enoic acid

Q. IUPAC name of $CH\equiv C-CH=C{H}_2$ is:

1. but-3-en-1-yne
2. But-1-en-3-yne
3. but-3-yn-1-ene
4. but-1-yn-3-ene

Q. Find the product when 1-propyl-cyclopent-1-en-2-ol reacts with $H_{2}O$, $H_{2}S{O}_4$.

Q. Suggest a sequence of reactions suitable for preparing following compound from the indicated starting material. You may use any necessary organic or inorganic reagents.