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Total isomers for ${\mathrm{C}}_4{\mathrm{H}}_{10}\mathrm{O}$ are- 

How many chain isomers are possible for ${\mathrm{C}}_5{\mathrm{H}}_{12}$ and ${\mathrm{C}}_6{\mathrm{H}}_{14}$ respectively?
1. 3,3
2. 3,5
3. 4,4
4. 3,4

${\mathrm{C}}_4{\mathrm{H}}_6$ may have 
1. one triple bond
2. two double bonds
3. two cycles
4. all of these

 has the configuration
1. R,R
2. S,S
3. R,S
4. May be 1 or 2

Total number of optical isomers obtained after monohalogenation of 3-Methyl pentane are :
1. 2
2. 4
3. 6
4. 8

Which conformational form of 2-fluoroethanol is most stable?
1. Anti
2. Partially eclipsed
3. Full eclipsed
4. Gauche

Indicate whether each of the following pairs are identical, or enantiomers and diastereomers ?

The numbers of stereoisomers possible for $\mathrm{HOOC}-{\left(\mathrm{CHOH}\right)}_4-\mathrm{COOH}$ is :
1. 32
2. 16
3. 14
4. 10

${\mathrm{CH}}_3-\underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}}-\underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}}-{\mathrm{CH}}_2-{\mathrm{CH}}_3$
How many optical isomers are possible in this compound ?
1. 2
2. 3
3. 4
4. 5

${\mathrm{CH}}_3-\underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}}-\underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}}-\underset{\mathrm{OH}}{\underset{|}{\mathrm{CH}}}-{\mathrm{CH}}_3$
How many optical isomers are possible in this compound ?
1. 2
2. 3
3. 4
4. 5

Compound which is not isomeric with diethyl ether is :
1. methyl-n-propyl ether
2. 1-butanol
3. 2-methyl-2-propanol
4. butanone

Which of the following would exhibit cis-trans isomerism ?
1. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CH}={\mathrm{CH}}_2$
2. $\mathrm{ClCH}=\mathrm{CHCl}$
3. $\mathrm{ClCH}={\mathrm{CCl}}_2$
4. ${\mathrm{CH}}_2=\mathrm{CH}-\mathrm{COOH}$

Which of the following molecule have (2R,3-Z) configuration ?
1. 
2. 
3. 
4. 

Which of the following compounds is isomeric with methyl vinyl ether ?
1. Propanal
2. 1-propanol
3. Ethyl methyl ether
4. ether

The number of chiral centers present in 3,4-dibromo-2-pentanol is :