Representations of Organic Compounds

Q.

Write bond line formulas for: Isopropyl alchol, 2, 3-Dimethyl, Heptan-4-one.

Q. Chlorobenzene on reaction with sodium in presence of dry ether forms:

1. 
2. 
3. 
4. 

Q.

Which transition metal shows a highest oxidation states?

Q.

Arrange the following compounds in increasing order of their acid strength:

Propan-1-ol, 2, 4, 6-trinitrophenol,

3-nitrophenol, 3, 5-dinitrophenol, phenol, 4-methylphenol

Q. Given below are two statements: one is labelled as
Assertion (A) and the other is labelled as Reason (R)
Assertion (A) : Treatment of bromine water with propene yields 1- bromopropan -2 - ol
Reason (R) : Attack of water on bromonium ion follows Markovnikov rule and results in 1- bromopropan -2 - ol
In the light of the above statements, choose the most appropriate answer fron the options given below:

1. (A) is true but (R) is false
2. Both (A) and (R) are true and (R) is the correct explanation of (A)
3. (A) is false but (R) is true
4. Both (A) and (R) are true but (R) is NOT the corect explanation of (A)

Q.

Write the IUPAC name of each of the following:

${\mathrm{CH}}_3\mathrm{OH}$

Q. The total number of position isomers having molecular formula $C_3{H}_{6}C{l}_2$ is?

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

Q. The number of sigma ($\sigma$) and pi ($\pi$) bonds in pent-2-en-4-yne is:

1. 10$\sigma$ bonds and 3$\pi$ bonds
2. 8$\sigma$ bonds and 5$\pi$ bonds
3. 11$\sigma$ bonds and 2$\pi$ bonds
4. 13$\sigma$ bonds and no $\pi$ bonds

Q. Which fisher projection represents the given wedge dash structure:

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

Q. 31.Write IUPAC name of K3[Fe(CN)5(No)] and explain

Q. When a coordinate compound CoCl3. 6NH3 is mixed with AgNO3, 3 moles of AgCl are pre mole of the compound. Write structural formula of the complex and name.
And please explain how to solve such type of problem

Q. In gaseous triethylamine the${}^{\prime \prime }-C-N-C{-}^{\prime \prime }$ bond angle is degree.

Q.

Write bond line formulas for: Isopropyl alcohol, 2, 3-Dimethyl butanal, Heptan-4-one.

Q. The number of dihydric phenols possible with the molecular formula C6H6O2 is :- (1) 2 (2) 3 (3) 4 (4) 5

Q. Which of the following compounds is capable of showing geometrical isomerism?

1. $C_6{H}_5-CH=C=CH-C_6{H}_5$
2. $C{H}_3-CH=C=CH-C{H}_3$
3. $C{H}_3-CH=C=C=CH-C{H}_3$
4. None of the above

Q.

Write the IUPAC names of the following compounds:

${\mathrm{CH}}_2={\mathrm{CH}}_2$

Q. Which one of the following represent the bond-line structure of isoheptane?

1. 
2. 
3. 
4. 

Q. IUPAC name of the compound $CN\mid C{H}_3-C-C{H}_2-C-C{H}_3\mid \mid \mid OC{H}_3$ is:

1. 2-Cyano-2-methyl-4-oxopentane
2. 4-Cyano-4-methyl-2-pentanone
3. 4-Cyano-4-methyl-2-oxopentane
4. 2, 2-dimethyl-4-oxopentanenitrile

Q. The total number of isomers with the molecular formula C₃H₅Cl is:

1. 2
2. 3
3. 4
4. 5

Q. Which of the following is the formula of a staturated aliphatic aldehyde?

1. $C_5{H}_{11}O$
2. $C_6{H}_{13}O$
3. $C_6{H}_{14}O$
4. $C_5{H}_{10}O$

Q. Which wedge - dash structure represents the same compound as that given by the following fischer projection?

1. 
2. 
3. 
4. 

Q. Name the sugar present in milk. How many monosaccharide units are present in it? What are such oligosaccharides called?

Q. The bond between chlorine and bromine is

1. Ionic
2. polar
3. polar with –ve charge on chlorine
4. polar with –ve charge on bromine

Q. Correct statements among (a) to (d) regarding silicones are:
(a) They are polymers with hydrophobic character.
(b) They are biocompatible.
(c) In general, they have high thermal stability and low dielectric strength.
(d) Usually, they are resistant to oxidation and used as greases.

1. (a), (b) and (c) only
2. (a) and (b) only.
3. (a), (b), (c) and (d)
4. (a), (b) and (d) only

Q. The correct representation for the following bond line structure is :

1. $\left(C{H}_3{)}_{2}CHCH\right(C{H}_3\left)CH\right(C{H}_3{)}_2$
2. $\left(C{H}_3{)}_{2}CHCH\right(C{H}_3{)}_2$
3. $\left(C{H}_3{)}_3\right(CH{)}_{3}C{H}_{2}C{H}_3$
4. $(C{H}_3{)}_{2}CHCHC{H}_3$

Q. How many chiral centers are present in the following compound?

Q. Convert the following condensed structure into Bond-line structure.
$\left(C{H}_3{)}_{2}CHCH\right(C{H}_3{)}_2$

1. 
2. 
3. 
4. 

Q. The given pair is

1. enantiomers
2. Identica
3. constitutional isomers
4. diastereomers

Q.

Using the structural formula, identify the functional group by circling it.

Propanone

Q.

In wedged-dash notation for three-dimensional representation of an organic molecule, the dashed bond represents:

1. A bond in the plane of the paper.

2. A bond above the plane of the paper.

3. A bond below the plane of the paper.

4. A bond either below or above the plane of the paper.