Meso Compounds

Q. How many terminal alkene with molecular formula C6H12

Q. Assertion: Aldehydes and ketones, both react with Tollens’ reagent to form silver mirror.
Reason: Both, aldehydes and ketones contain a carbonyl group.

Q. 33 Among the species CO2, CO32-, CH3COO-, CO, HCHO which has longest carbon oxygen bond?

Q.

The number of possible isomers for compound $C_2{H}_{3}C{l}_{2}Br$ is

1. 4

2. 5

3. 2

4. 3

Q. In the following conversion of sulphide of phosphorous P_4S_{3 ---> }P_2O_5 + SO_2 Equivalent weight of P4S

Q. Explain why \cdot CH_3 is planar whereas \cdot CF_3 is pyramidal.

Q.
The number of chiral centres present in the above compound is

1. \N
2. 1
3. 2

Q. 22.Which is the third member of alkyne group?

Q. total no. of stereoisomer for 2, 3-dichlorobutane are

Q. The following compound is a meso compound – True or False?

1. True
2. False

Q. 40. Velocity of electron in 3rd shell of Li+2 is (C- velocity of light)

Q. If the specific rotation of optically pure 2-Butanol is -120 degrees, and a synthetic sample of 2-butanol containing both the enantiomers shows a specific rotation of +24 degrees, find the percentage of d-2-Butanol.

1. 60
2. 80
3. 40
4. 20

Q. The hydrocarbon contain 80 % of carbon, then the hydrocarbon is

Q. Find out the total number of optically active isomers of pentane-1, 2, 3, 4, 5-pentol?

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

Q.

A compound whose molecule is superimposable on its mirror image despite containing chiral carbon atoms is called:

1. Threo isomer

2. Meso compound

3. Enantiomer

4. No special name

Q. 9. structure of N(CH_3)_3 is nonplanar where as N(SiH_3)_3 is planar. Why?