Wedge and Dash

Q. In wedge-dash representation, wedge represents what and dash represents what?

1. Wedge – on the plane
   Dash – out of the plane
2. Wedge – on the plane
   Dash – into the plane
3. Wedge – into the plane
   Dash – out of the plane
4. Wedge – out of the plane
   Dash – into the plane

Q. The priority of groups $OH,COOH,CHO,OC{H}_3$ attached to chiral carbon is in order:

1. $OH>COOH>CHO>OC{H}_3$
2. $OC{H}_3>OH>CHO>COOH$
3. $OC{H}_3>OH>COOH>CHO$
4. $OC{H}_3>COOH>CHO>OH$

Q. For the following compound, write a condensed formula and also their bond-line formula.
(a)$HOC{H}_{2}C{H}_{2}CH\left(C{H}_3\right)CH\left(C{H}_3\right)C{H}_3$
(b)

Q.

Match the shape of molecules in Column I with the type of hybridisation in Column II.

	Column I		Column II
A	Tetrahedral	$\left(i\right)$	$s{p}^2$
B	Trigonal	$\left(ii\right)$	$sp$
C	Linear	$\left(iii\right)$	$s{p}^3$

Q. Write wedge dash representation for the following compound.
$C{H}_{3}Cl$
Assume one Hydrogen is below the plane and chlorine is above the plane.

1. 
2. 
3. 
4. 

Q. Let’s try another question.
Which of the following are possible wedge – dash representations for Glyceraldehyde.

Assume the H and OH on the second carbon are coming out of the plane.

1. 
2. 
3. 
4. 

Q. Explain the structure of $C{O}_2$ molecule.

Q. In wedge-dash representation, wedge represents what and dash represents what?

1. Wedge – into the plane
   Dash – out of the plane
2. Wedge – on the plane
   Dash – out of the plane
3. Wedge – out of the plane
   Dash – into the plane
4. Wedge – on the plane
   Dash – into the plane

Q. Choose the correct increasing order of bond angles in $H_{2}S,N{H}_3,B{F}_3$ and $Si{H}_4$:

1. $H_{2}S<Si{H}_4<N{H}_3<B{F}_3$
2. $N{H}_3<H_{2}S<Si{H}_4<B{F}_3$
3. $H_{2}S<N{H}_3<B{F}_3<Si{H}_4$
4. $H_{2}S<N{H}_3<Si{H}_4<B{F}_3$

Q. Write wedge dash representation for the following compound.
$C{H}_{3}Cl$
Assume one Hydrogen is below the plane and chlorine is above the plane.

1. 
2. 
3. 
4. 

Q. In wedge-dash representation, wedge represents what and dash represents what?

1. Wedge – into the plane
   Dash – out of the plane
2. Wedge – on the plane
   Dash – out of the plane
3. Wedge – out of the plane
   Dash – into the plane
4. Wedge – on the plane
   Dash – into the plane

Q. Write wedge dash representation for the following compound.
$C{H}_{3}Cl$
Assume one Hydrogen is below the plane and chlorine is above the plane.

1. 
2. 
3. 
4. 

Q. Compound has which of the following prefix?

1. Trans
2. Anti
3. $E$
4. $Z$

Q. Reynolds number depend on density , velocity , diameter and coefficient of viscosity . Derive the relation using dimensional formula

Q. The letters ${}^{\prime }{D}^{\prime }$ or ${}^{\prime }{L}^{\prime }$ before the name of a stereoisomer of a compound indicate the correlation of configuration of that particular stereoisomer. This refers to their relation with one of the isomers of glyceraldehyde. Predict whether the following compound has ${}^{\prime }{D}^{\prime }$ or ${}^{\prime }{L}^{\prime }$ configuration.

Q. Let’s try another question.
Which of the following are possible wedge – dash representations for Glyceraldehyde.

Assume the H and OH on the second carbon are coming out of the plane.

1. 
2. 
3. 
4. 

Q. Write wedge dash representation for the following compound.
$C{H}_{3}Cl$
Assume one Hydrogen is below the plane and chlorine is above the plane.

1. 
2. 
3. 
4. 

Q. Let’s try another question.
Which of the following are possible wedge – dash representations for Glyceraldehyde.

Assume the H and OH on the second carbon are coming out of the plane.

1. 
2. 
3. 
4.