Primary, Secondary, Tertiary and Quaternary Carbon

Q.

Name the structure of silicates in which three oxygen atoms of $[Si{O}_4{]}^{-}$ are shared:

1. Three dimensional silicate

2. Linear chain silicate

3. Pyrosilicate

4. Sheet silicate

Q.

$1^{\circ },2^{\circ },3^{\circ }and{4}^{\circ }$ carbon atoms are present in

1. 2, 3, 4-Trimethylpentane

2. 2, 2, 3-Trimethylpentane

3. Both (a) and (b)

4. Neither (a) nor (b)

Q.

In the following compound, the number of primary carbon atoms are:

$C{H}_3-\stackrel{C{H}_3}{\stackrel{|}{\underset{C{H}_3}{\underset{|}{C}}}}-\underset{C{H}_3}{\underset{|}{CH}}-C{H}_3$

1. 3

2. 6

3. 4

4. 5

Q. hich of the following compounds is isomeric with2, 2, 4, 4-tetramethylhexane?(a) 3-ethyl-2, 2-dimethylpentane(b) 4-isopropylheptane(c) 4-ethyl-3methyl-4-n-propyloctane(d) 4, 4-diethyl-3-methylheptane.36. W

Q.

Which of the following is position and chain isomer of

:

1. 

2. CH₃ - CH₂- CH₂- CH₂- CHO

3. 

4. CH₃ - CH₂- C - CH₂ - CH₃

Q. The number of $1^o,2^{o}and{3}^o$ H atoms in 2, 5, 6- trimethyl octane, respectively, is

1. 16, 5, 3
2. 15, 6, 3
3. 16, 6, 3
4. 15, 5, 3

Q.

In the following compound, the number of primary carbon atoms are:

$C{H}_3-\stackrel{C{H}_3}{\stackrel{|}{\underset{C{H}_3}{\underset{|}{C}}}}-\underset{C{H}_3}{\underset{|}{CH}}-C{H}_3$

1. 3

2. 4

3. 5

4. 6

Q. The number of primary carbons are:

1. 5
2. 6
3. 4
4. 7

Q.

CH³ - CH² - CH = CH² and CH³ - CH = CH³ are known as

1. Steroisomers

2. Chain isomers

3. Geometrical isomers

4. Position isomers

Q. The number of $1^o,2^{o}and{3}^o$ H atoms in 3-ethyl-5-methyl heptane, respectively, is

1. 12, 8, 1
2. 14, 4, 2
3. 12, 6, 2
4. 12, 8, 2

Q. The minimum number of carbon atoms is an alkyne having one quaternary atom are ________.

1. 5
2. 7
3. 6
4. 4

Q.

How many primary, secondary, tertiary and quaternary carbons are present in the following hydrocarbon

$C{H}_3-CH\left(C{H}_3\right)-C(C{H}_3{)}_2-C{H}_2-CH(C{H}_3)-C{H}_2-C{H}_3$

1. 6, 2, 2, 1

2. 2, 6, 3, 0

3. 2, 4, 3, 2

4. 2, 2, 4, 3

Q. Number of $(s{p}^2-sp)$ sigma bonds $C{H}_2{C}_{2}C{H}_2$ in the given compound is

1. 1
2. 2
3. 3
4. 4

Q. The number of $1^o,2^{o}and{3}^o$ H atoms in 3-ethyl-5-methyl heptane, respectively, is

1. 12, 8, 1
2. 14, 4, 2
3. 12, 6, 2
4. 12, 8, 2

Q.

$1^{\circ },2^{\circ },3^{\circ }and{4}^{\circ }$ carbon atoms are present in?

1. 2, 2, 4-Trimethylpentane

2. 2, 2, 3-Trimethylpentane

3. Both (a) and (b)

4. Neither (a) nor (b)

Q. HOW MANY ISOMERS ARE THERE IN DIBROMONAPHTHELIN?

Q.

The type of hybridisation of boron in diborane is

(a) sp (b) sp² (c) sp³ (d) dsp²

Q. Count the number of $\sigma$ and $\pi$ bonds in the compound below:

1. 15, 2
2. 14, 3
3. 6, 2
4. 13, 3

Q.

In the following compound, the number of primary carbon atoms are:

$C{H}_3-\stackrel{C{H}_3}{\stackrel{|}{\underset{C{H}_3}{\underset{|}{C}}}}-\underset{C{H}_3}{\underset{|}{CH}}-C{H}_3$

1. 3

2. 4

3. 5

4. 6

Q. Which of the following represent molecules posses sp hybridised carbon in its structure ?

1. 
2. 
3. 
4. None of the above

Q. What is the number of carbon atoms in the longest continuous chain which is a 2-methyl alkane with the molecular mass of 72.

Q. Which of the following is secondary radical?

1. $C{H}_3-(C{H}_2{)}_2-C{H}_2-$
2. $(C{H}_3{)}_{3}C-$
3. $C{H}_2=CH-$
4. $C_6{H}_5-$

Q. A triple bond may best be described as:

1. two sigma bonds and one pi bond
2. two sigma bonds and two pi bonds
3. one sigma bond and two pi bonds
4. three sigma bonds
5. three pi bonds

Q. The tetrahalides of group 14 elements except that of carbon are:

1. strong Lewis bases
2. strong oxidising agents
3. strong Lewis acids
4. none of the above

Q. The correct IUPAC name of the followng structure is :

1. 3, 4-dimethyl-3-n-propylnonane
2. 5, 7-dimethyl-7-n-propylnonane
3. 4, 5-dimethyl-4-ethyldecane
4. 6, 7-dimethyl-7-ethyldecane