Polymerization Isomerism

Q.

A compound contains 4.07% hydrogen, 24.27% Carbon and 71.65% Chlorine. Its molar mass is 90.96g. What are it's empirical and molecular formula?

Q. Which of the following molecules does not show stereo isomerism?

1. 3, 4-Dimethylhex-3-ene
2. 3-Methylhex-1-ene
3. 3-Ethylhex-3-ene
4. 4-Methylhex-1-ene

Q. The total number of elements of symmetry in a cubic crystal is _____________

Q. Define isomerism and the different types of isomerism.

Q.

Write the molecular formula and structure of cyclohexane, and also give the total number of covalent bonds formed.

Q. How to say if ligand if symmetrical and unsymmetrical

Q.

CH₃CH₂COCl IUPAC name is:

1. Propanoyl Chloride

2. Ethanoyl Chloride

3. Acetyl Chloride

4. Chloroethane

Q. The enantiomeric excess of a mixture of 2-bromobutane with an observed specific rotation of $+{18.5}^{\circ }$. The specific rotation of (R)-2-bromobutane is $-{23.1}^{\circ }$ and (S)-2-bromobutane is $+{23.1}^{\circ }$.
How many percent of each enantiomer is present in the mixture?

1. (S)-2-bromobutane - 90%
   (R)-2-bromobutane - 10%
2. (S)-2-bromobutane - 10%
   (R)-2-bromobutane - 90%
3. (S)-2-bromobutane - 20%
   (R)-2-bromobutane - 80%
4. (S)-2-bromobutane - 80%
   (R)-2-bromobutane - 20%

Q. Which of the following compound(s) will show plane of symmetry

1. 
2. 
3. 
4. 

Q.

A chiral carbon has four different groups attached to it. So does this mean doubly or triply bonded carbon atoms cannot be chiral? Please explain.

Q.

How do you distinguish between chlorobenzene from benzyl chloride?

Q. The pair(s) of coordination complexes/ions exhibiting the same kind of isomerism is(are)

1. $\left[COB{r}_{2}C{l}_2{]}^{2-}\text{and}\right[PtB{r}_{2}C{l}_2{]}^{2-}$
2. $\left[Cr\right(N{H}_3{)}_{5}Cl\left]C{l}_2\text{and}\right[Cr\left(N{H}_3{)}_{4}C{l}_2\right]Cl$
3. $\left[Pt\right(N{H}_3{)}_3\left]\right(N{O}_3\left)\right]Cl\text{and}\left[Pt\right(N{H}_3{)}_{3}Cl]Br$
4. $\left[Co\right(N{H}_3{)}_{4}C{l}_2{]}^{+}\text{and}\left[Pt\right(N{H}_3{)}_2\left(H_{2}O\right)Cl{]}^{+}$

Q. A solid is made up of elements A, B, C and D. Atoms A, B, C, and D are located at corners, face-centres, body-centre and edge-centres respectively. If atoms touching one of the body-diagonal planes of symmetry are removed then the formula of compound is

Q. The correct IUPAC name of the compound,

1. 5, 6-diethyl-3-methyl-dec-4-ene
2. 5, 6-diethyl-8-methyl-dec-6-ene
3. 6-butyl-5-ethyl-3-methyl-oct-4-ene
4. 2, 4, 5-triethyl-3-nonene

Q. The total number of structural isomers possible for an amine with molecular formula $C_4{H}_{11}N$ is :

1. 5
2. 6
3. 8
4. 7

Q. Which symmetry element makes the given compound achiral?

1. Plane of symmetry (POS)
2. Centre of symmetry (COS)
3. Axis of symmetry (AOS)
4. Both (a) and (b)

Q. Calculate the enantiomeric excess of a mixture of 2-bomobutane with an observed specific rotation of $+{18.5}^{\circ }$. The specific rotation of (R)-2-bomobutane is $-{23.1}^{\circ }$ and (S)-2-bomobutane is $+{23.1}^{\circ }$.

1. 80%
2. 90%
3. 75%
4. 59%

Q. The IUPAC name of the compound shown below is:

1. 3-bromo-1-chlorocyclohexene
2. 1-bromo-3-chlorocyclohexene
3. 2-bromo-6-chlorocyclohex-1-ene
4. 6-bromo-2-chlorocyclohexene

Q. Number of structural isomers possible in $C_3{H}_{6}O$ are

1. 9
2. 6
3. 5
4. 3

Q.

The electrical conductivity of ionic compounds in molten state is due to the presence of ___________

Q. What is the common name for C6H5COCH2Cl? Is it differ from the common name of C6H4ClCOCH3?

Q.

So, I am not expert in ISOMERISM but after listening to my tacher I have come to the point that. Suppose I have the compound

CH3 CH2 -O- CH2 CH3

then can I say that it is Metamer of following two compound:

CH3 -O- CH2 CH2 CH3 AND

CH3 CH2 CH2 -O- CH3

I asked this question to my friends when we came out of our chemistry class. Some of them said me that they will tell me after reading the book and some told me that It is a STUPID question.

I will read the book only after your answer beacause I want to know that what is level of my brain of asking questions without studying book.

Do really this question is STUPID or really I am intelligent boy?

Q. Number of structural isomeric aldehydes and ketones possible for the compounds with molecular formula $C_5{H}_{10}O$ is

1. 6
2. 5
3. 8
4. 7

Q. How many structural isomers are possible for a compound with molecular formula $C_3{H}_{7}Cl$ ?

1. 2
2. 7
3. 5
4. 9

Q. How many structural isomers can you draw for pentane?

Q.

Write the chemical formula of the following compound:

Ammonium thiocyanate

Q. How many structural isomers of $C_5{H}_{10}O$ are there ?

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

Q. what are delta orbitals?

Q. How many structural isomers are possible for $C_4{H}_{9}Cl$?

1. 4
2. 8
3. 10
4. 2

Q. How many structural isomers are possible for molecular formula $C_3{H}_{6}BrCI?$

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