Structure of Amines & Optical Activity

Q. In a compound XY2O4 oxide ions are arranged in ccp and cations X are present in octahedral voids.cations Y are equally distributed between octahedral and tetrahedral voids .What is the fraction of the octahedral voids occupied?

Q. Carboxylic acid doesnot give reactions of carbonyl group?

Q. The structure and hybridization of $N{\left(Si{H}_3\right)}_3$ respectively are:

1. Planar and $s{p}^2$
2. Pyramidal and $s{p}^2$
3. Tetrahedral and $s{p}^3$
4. Planar and $s{p}^3$

Q. Which one of the following is an optically active compound?

1. n-propanol
2. 2-chlorobutane
3. n-butanol
4. 4-hydroxyheptane

Q. Ethylamine is a stronger base than acetamide. Give reason.

Q. Which of the following biphenyl compounds is optically active?

1. 
2. 
3. 
4. All of the above.

Q.

	Column-I (Molecules)		Column-II (Property)
P	$I{F}_7$	1	Planar and polar
Q	$S{O}_2$	2	Non planar and polar
R	$S{F}_4$	3	Planar and non planar
S	$C{S}_2$	4	Non planar and non polar

1. $P-4;Q-1;R-2;S-3$
2. $P-4;Q-2;R-1;S-3$
3. $P-3;Q-1;R-2;S-4$
4. $P-3;Q-1;R-4;S-2$

Q. Which of the following are isostructural pairs?
A. $S{O}_4^{2-}\text{and}Cr{O}_4^{2-}$
B. $SiC{l}_4\text{and}TiC{l}_4$
C. $N{H}_3\text{and}N{O}_3^{-}$
D. $BC{l}_3\text{and}BrC{l}_3$

1. A and C only
2. B and C only
3. A and B only
4. C and D only

Q. Examine the following two structures for the anilinium ion and choose the correct statement from the ones given below:

1. (II) is not an acceptable canonical structure because carbonium ions are less stable than ammonium ions.
2. (II) is not an acceptable canonical structure because it is non-aromatic.
3. (II) is not an acceptable canonical structure because nitrogen has 10 valence electrons.
4. (II) is an acceptable canonical structure.

Q. How many p-orbitals participate in the hybridization of nitrogen in pyrrole?

Q. Which of the following alkane shows optical activity?

1. Neopentane
2. Isopentane
3. 3-Methylpentane
4. 3-Methylhexane

Q. Amongst $N{O}_3^{-},AS{O}_3^{3_{-}},C{O}_3^{2_{-}},Cl{O}_3^{-},S{O}_3^{2_{-}},\text{and}B{O}_3^{2_{-}}$, the non-planar species are:

1. $C{O}_3^{2-},S{O}_3^{2-},B{O}_3^{3-}$
2. $As{O}_3^{3_{-}},Cl{O}_3^{-},S{O}_3^{2_{-}}$
3. $N{O}_3^{-},C{O}_3^{2-},B{O}_3^{3-}$
4. $S{O}_3^{2-},N{O}_3^{-},B{O}_3^{3-}$

Q. Among the following, the Newman projections of meso-2, 3-butanediol is/are:

1. 
2. 
3. 
4. 

Q. Which of the following statements regarding $1,3$-dimethyl cyclobutane is correct?

1. Both cis and trans forms are optically active.
2. Both cis and trans forms are optically inactive.
3. The cis form is optically active, while the trans form is optically inactive.
4. The trans form is optically active, while the cis form is optically inactive.

Q. What is the hybridization of interhalogen compounds of the type $X{X}_5^{\prime }$?

1. $s{p}^3{d}^2$
2. $s{p}^2{d}^2$
3. $s{p}^{3}d$
4. $s{p}^3{d}^3$

Q. Which of the following(s) is/are an optically active compound ?

1. Alanine
2. $1,3$ - Diphenyl propadiene
3. Meso - tartaric acid
4. Glyceraldehyde

Q. Select the optically inactive compound among the following:

1. 
2. 
3. 
4. None of the above

Q. In given compounds,

How many compounds are optically active?

Q.

What is the shape of the cuprammonium ion?

1. Octahedral

2. Tetrahedral

3. Trigonal

4. Square planar

Q. Among the following, the correct statement concerning the optical activity is:

1. A molecule containing two or more chiral centres is always optically active.
2. A molecule containing just one chiral centre is always optically active
3. A molecule possesing plane of symmetry is optically active
4. An optically active molecule should have at least one chiral centre

Q. Which of the following cyclopentane derivatives is optically inactive ?

1. 
2. 
3. 
4. 

Q.
Double bond equivalent of given compound is:

Q. Which of the following amines is/are resolvable?

1. 
2. 
3. 
4. 

Q.

Which one is a Lewis acid

1. ClF₃

2. H₂O

3. CCl4

4. NH₃

Q. $C_3{H}_{9}N$ cannot represent

1. $1^{\circ }$ amine
2. $2^{\circ }$ amine
3. $3^{\circ }$ amine
4. Quaternary salt

Q. The formation of $P{H}_4^{+}$ is difficult as compared to $N{H}_4^{+}$ because:

1. The lone pair of phosphorous is optically inert
2. The lone pair of phosphorous resides in almost a pure $p-$ orbital
3. The lone pair of phosphorous resides at a $s{p}^3$ orbital
4. The lone pair of phosphorous resides in almost a pure $s-$ orbital

Q. The structure and hybridization of $N{\left(Si{H}_3\right)}_3$ respectively are:

1. Pyramidal and $s{p}^2$
2. Tetrahedral and $s{p}^3$
3. Planar and $s{p}^2$
4. Planar and $s{p}^3$

Q. Is Tropolone aromatic?

Q. The number of possible structures of amines $C_7{H}_{9}N$ having one benzene ring is

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

Q.

Which statement is true regarding the following structure?

1. Neither a) nor b).

2. It is a chiral molecule

3. Both a) and b)

4. It exists in two resovable optically active forms