Structure of Carbanion

Q.

The pair of electrons in the given carbanion, $C{H}_{3}C\equiv C^{-}$, is present in which orbital?

1. $s{p}^3$

2. $2p$

3. $sp$

4. $s{p}^2$

Q. The most stable carbanion among the following is -

1. 
2. 
3. 
4. 

Q. The shape of a methyl carbanion is likely to be:

1. Pyramidal
2. Angular
3. Planar
4. Linear

Q. Which of the following oxoacid of sulphur does not have $S-O-S$ linkage?

1. Sulphurous acid
2. Sulphuric acid
3. Pyrosulphuric acid
4. Peroxy-disulphuric acid

Q.

What is the shape and hybridization of the ${\mathrm{PCl}}_3$ molecule?

Q.

Hybridisation of alkyl carbanion is

1. 

2. 

3. 

4. SP

Q. Which of the following is true regarding $V{O}_4^{3-}$?

1. It is paramagnetic in nature.
2. It is an inner orbital complex.
3. It has a trigonal planar shape.
4. All of the above.

Q.

The arrangement of spheres present in hexagonal close packing is:

1. ABCABC

2. AABB

3. AAA

4. ABAB

Q.

Limiting radius ratio of complex Ni(CN)4 2-

Q. What is the bond angle in a carbanion?

1. > 109.5
2. < 109.5
3. None of these
4. = 109.5

Q.

In the formation of adduct from ammonia and boron trifluoride.

1. Hybridization both B and N are unchanged.

2. Hybridization of B is unchanged, but hybridization of N is changed

3. Hybridization of N is unchanged, But hybridization of B is changed

4. Hybridization of both B and N are changed

Q. The shape of a methyl carbanion is likely to be:

1. Pyramidal
2. Angular
3. Planar
4. Linear

Q. Which of the following compound have same geometry among the following:
(i) $H_{2}O$ (ii) $AlC{I}_3$ (iii) $C{H}_4$ (iv) $N{F}_3$

1. $\left(i\right),\left(ii\right)$
2. $\left(i\right),\left(ii\right),\left(iv\right)$
3. $\left(i\right),\left(iii\right),\left(iv\right)$
4. $\left(iii\right),\left(iv\right)$

Q. Match each set of hybrid orbital's from List-I with complex(es) given in List-II
List-I List-II
$\left(I\right)ds{p}^2$ $\left(P\right)Fe{F}_6^{4–}$
$\left(II\right)s{p}^3$ $\left(Q\right)\left[Ti\right(H_{2}O{)}_{3}C{l}_3]$
$\left(III\right)s{p}^3{d}^2$ $\left(R\right)\left[Cr\right(N{H}_3{)}_6{]}^{3+}$
$\left(IV\right)d^{2}s{p}^3$ $\left(S\right)[FeC{l}_4{]}^{2–}$
$\left(T\right)\left[Ni\right(CO{)}_4]$
$\left(U\right)\left[Ni\right(CN{)}_4{]}^{2–}$

Which of the following option has the correct combination considering List-I and List-II?

1. I, T
2. II, U
3. III, R
4. IV, Q

Q. What is the bond angle in a carbanion?

1. > 109.5
2. = 109.5
3. < 109.5
4. None of these

Q.

Which of the following system is most stable for a chelate?

1. $\text{Two fused cyclic system}$
2. $\text{Three fused cyclic system}$
3. $\text{Four fused cyclic system}$
4. $\text{Five fused cyclic system}$

Q. The stability of the following carbanions follows the order
a. $C{H}_2=\stackrel{\ominus }{C}H$
b. $HC\equiv \stackrel{\ominus }{C}$
c. $O_{2}N-\stackrel{\ominus }{C}{H}_2$
d. $\stackrel{\ominus }{C}{H}_3$

1. b > a > c > d
2. b > d > a > c
3. d > a > b > c
4. c > b > a > d

Q. Assertion :$N{H}_3$ and $C{H}_3^{-}$ both have pyramidal shape. Reason: N in $N{H}_3$ and C in $C{H}_3^{-}$ both have $s{p}^3$ hybridisation with one lone pair of electron on each.

1. Assertion is true, Reason is true and Reason is correct explanation for Assertion.
2. Assertion is true, Reason is true and Reason is NOT the correct explanation for Assertion.
3. Assertion is true, Reason is false.
4. Assertion is false, Reason is true.

Q.

Statement-1: The unsaturated fat (oils) are changed to saturated fat by $H_2$ in presence of finely divided platinum.
Statement-2: $H_2$ shows addition round doubly bonded carbon atoms.

1. Statement-1 is True, Statement-2 is True; Statement-2 is not a correct explanation for Statement-1
2. Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1
3. Statement-1 is true, Statement-2 is false
4. Statement-1 is false, Statement-2 is true

Q. In which molecule are all atoms coplanar ?

1. $C{H}_4$
2. $B{F}_3$
3. $P{F}_3$
4. $N{H}_3$

Q. Out of the molecules given below,
$\left(i\right)C_2{H}_4\left(ii\right)AlC{l}_3\left(iii\right)C{H}_4\left(iv\right)N{F}_3$
Which molecules have same hybridisation:

1. $\left(i\right),\left(iii\right)$
2. $\left(i\right),\left(ii\right),\left(iv\right)$
3. $\left(i\right),\left(iii\right),\left(iv\right)$
4. $\left(iii\right),\left(iv\right)$

Q. Red precipitate is obtined when ethanol solution of diamehylgyoxime is added to ammonical $Ni\left(II\right)$ Which of the following statement is not true?

1. Complex has symmetrical $H-$bonding
2. Red complex has a square planer grometery
3. Red complex has a terahedral geometry
4. Dimethylglyoxime function as bidenate ligand

Q. Which one of the following is the correct set with respect to molecule, hybridization and shape?

1. $BeC{l}_2,s{p}^2$, linear
2. $BC{l}_3,s{p}^2$, triangular planar
3. $BeC{l}_2,s{p}^2$, triangular planar
4. $BC{l}_3,s{p}^3$, tetrahedral

Q. Identify the correct combination from the following:

	Column I	Column II
A	Hydrogen	Hydrogen bonding
B	Hydrogen iodide	Dipole-dipole forces
C	Ammonia	Hydrogen bonding
D	Mercury	Vander waals forces
E	Magnesium oxide	Dipole-dipole forces

1. A & D
2. A, D & E
3. B & C
4. A, B & C

Q.

The shape of methyl carbanion is:

1. Linear

2. Pyramidal

3. Planar

4. Tetrahedral

Q. The most stable carbanion among the following is -

1. 
2. 
3. 
4.