Structural Isomerism

Q. Which of the following is not an isomer of $C{H}_3-C{H}_2-CHO$ ?

1. 
2. 
3. 
4. 

Q. what is bond order of NO, NO+, NO2 -, NO3 -, CN- , O2 , O2-, O2+ , C2 ?

Q. 6. Which one of the following exhibits geometrical isomerism? 1) 1, 2 - dibromopropene 2) 2, 3- dimethylbut-2-ene 3) 2, 3-dibromobut-2-ene 4) 2-methylbut2-ene

Q. 44. Minimum no. of carbon for secondary amine(CnH2n+3N) to show chain isomerism (a)3 (b)4 (c)6 (d)5

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

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

Q. 26. How to find bond order of any element ?(step by step) What is the bond order of O2(-) , O2(+) , O2(2-) ?

Q.

what is stereoisomerism ? what are stereoisomeric pairs ?

Q.
The total number of all possible isomeric ketones of molecular weight 100 and molecular formula $\left(C_6{H}_{12}O\right)$ is/are:

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

Q. How to draw resonance structures?

Q. 4. How many geometrical isomerism are possible for C2ClBrIF

Q. $C_4{H}_8$ can exhibit the following isomerism:

1. positional isomerism
2. ring chain isomerism
3. geometrical isomerism
4. All of the above

Q. An organic compound has molecular formula $C_9{H}_{18}$. Its all carbon atoms are $s{p}^3$ hybridized and its all hydrogen atoms are identical. Its structural formula can be

1. 
2. 
3. 
4. 

Q. A compound that has the molecular formula $C_4{H}_{10}O$ can show:

1. Metamerism
2. Functional Isomerism
3. Chain Isomerism
4. Positional Isomeris

Q. What would be bond order formula for Polyatomic molecules?

Q. The complex that can show fac- and mer-isomers is

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> JEE Main 2020

1. $\left[CoC{l}_2\right(en{)}_2]$
2. $\left[Pt\right(N{H}_3{)}_{2}C{l}_2]$
3. $\left[Co\right(N{H}_3{)}_{4}C{l}_2{]}^{+}$
4. $\left[Co\right(N{H}_3{)}_3\left(N{O}_2{)}_3\right]$

Q.

what is empircal formula for molecular formula

Q. ASSERTION: Both bond angles and bond lengths remain same in conformers of ethane REASON: H-CN and H-NC(isocyanide) are tautomers (also functional isomers) while R-CN and R-NC are only functional isomers

Q. number f isomeric forms that a4e represented by Aromatic compound C7H9N A \rbrack4 B\rbrack5 C\rbrack6 D\rbrack7

Q. Which organic compound among the following is not an isomer of $C{H}_3-CO-C{H}_{2}C{H}_{2}C{H}_{2}C{H}_3$?

1. $C{H}_{3}C{H}_{2}OCH=CHC{H}_{2}C{H}_3$
2. $C{H}_{3}CH=CHC{H}_{2}C{H}_{2}CHO$
3. $(C{H}_3{)}_{2}CHCOC{H}_{2}C{H}_3$
4. $C{H}_{3}C{H}_{2}COC{H}_{2}C{H}_{2}C{H}_3$

Q.

why are carbon oxygen bond lengths in Na₂CO₃ equal

Q. The total number of structural isomers possible with molecular formula $C_3{H}_{6}C{l}_2$ are :

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

Q. Find the degree of unsaturation for the following compounds A, B, C and D respectively :
A.
B.
C. D.

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

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Number of possible isomers for the complex $\left[Co\right(e{n}_2\left)C{l}_2\right]Cl$ will be (en: ethylenediamine) is :

Re-AIPMT-2015

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

Q. 99 which of the following reagent will distinguish between two functional isomer of formulaC2H4O2? A NaHCO3 B CuSO4 C C2H5CL All of the above

Q. Why boiling point order is higher for branched chain compounds compared to less branched componds?

Q. give reasons why ethene does not form conformers whereas ethane does