d x 2 - y 2 atomic orbital — One nodal plane

P y atomic orbital — Two nodal plane

Chemistry - Chemical Bonding Molecular Structure - Quiz-6

The incorrect order of boiling point is-

0%

$H_{2} O > {CH}_{3} OH$
0%

$N {({CH}_{3})}_{3} < NH {({CH}_{3})}_{2}$
0%

$H_{3} {PO}_{4} > {Me}_{3} {PO}_{4}$
0%

${CH}_{3} N_{3} > {HN}_{3}$

When the substances Si, KCl, $C H_{3}$ OH and $C_{2} H_{6}$ are arranged in order of increasing melting point , what is the correct order?

0%

Si, KCl , $C H_{3}$ OH , $C_{2} H_{6}$
0%

$C H_{3} O H$ , $C_{2} H_{6}$ , Si ,KCl
0%

KCl, Si, $C_{2} H_{6}$ , $C H_{3} O H$
0%

$C_{2} H_{6}, C H_{3} O H, K C l, S i$

Iodine molecules are held in the solid lattice by............

0%

London forces (2) dipole-dipole interactions
0%
2
0%

Covalent bonds (4) coulombic force
0%
4

Which substance has the highest melting point ?

0%

() CO
0%

() $C O_{2}$
0%

(d) $S i O_{2}$
0%

() $P_{2} O_{5}$

H.O.M.O. (Highest Occupied Molecular Orbital) of CO molecular is :

0%

Non-bonding M.O. with slight antibonding character
0%

Non-bonding M.O. with slight bonding character
0%

Pure non-bonding M.O.
0%

None of the above

Nodal planes of $π - bond (s) in {CH}_{2} = C = C = {CH}_{2} are located in :$

0%

all are in molecular plane
0%

two in a molecular plane and in a plane peerpendicular to moleclar plane which contains $C - C σ - bond$
0%

one in molecular plane and two in plane perpendicular to molecular plane which bisects $C - C σ - bonds$
0%

two in a molecular plane and one in a plane perpendicular to molecular plane which bisects $C - C σ - bonds$ at right angle.

The hybridisation of the central atom will change when:

0%

$N H_{3}$ combines with $H^{+}$
0%

$H_{3} B O_{3_{}}$ combines with $O H^{-}$
0%

$N H_{3}$ forms $N {H_{2}}^{-}$
0%

$H_{2} O$ combines with $H^{+}$

Species having maximum $' C I — O'$ bond order is-

$1 . {CIO}_{3}^{-} 2 . {CIO}_{3} 3 . {CIO}_{2}_{} 4 . {CIO}_{2}^{-}$

0%
1
0%
2
0%
3
0%
4

Which of the following have $X - O - X$ linkage?

(where X is Central atom)

(i) $C r_{2} O_{7}^{2 -}$ (ii) $S_{2} O_{3}^{2 -}$

(iii) Pyrosilicate (iv) Hyponitrous Acid

0%

(i) (iii)
(2) (iii) (iv)
0%
2
0%

(i) (iii) (iv)
(4) (i) (ii)
0%
4

Which bonds are formed by a carbon atom with $s p^{2}$ - hybridization?

0%

$4 π - b o n d s$
0%

$2 π - b o n d s a n d 2 σ b o n d s$
0%

$1 π - b o n d s a n d 3 σ - b o n d s$
0%

$4 δ - b o n d s$

Which of the following species contains maximum number of atoms in 'XY' plane?

$1 . X e F_{2} 2 . S F_{6} 3 . I F_{3} 4 . A l l$

0%
1
0%
2
0%
3
0%
4

What is the hybridization of the carbon atoms labeled $C_{1}$ and $C_{2}$ respectively in glycine?

$C_{1}$ $C_{2}$

0%

$s p^{2}$ $s p^{2}$
0%

$s p^{2}$ $s p^{3}$
0%

$3. s p^{3}$ $s p^{2}$
0%

$s p$ s $p^{3}$

Choose the correct option for the following molecule :

1. Non planar

0%

3. Both and (2)
0%

2. $μ \neq 0$
0%
3
0%

4. $μ = 0$

Select the correct statement:

0%

() $H S O_{5}^{-}$ ion has one $S — O — H$ linkage
0%

() Number of $B — O — B$ linkages in Borax is equal to number of $P — O — P$ linkages in $P_{4} O_{10}$
0%

() Hybridization of both sulphur on $(H_{2} S_{2} O_{5})$ (pyrosulphurous acid) is name but oxidization state of both sulphur are different
0%

() Tetra -Polyphosphoric has four $P — O — P$ and no $P — P$ linkage

The H-O-H bond angles in $H_{3} O^{+}$ are approximately $107^{°}$ . The orbitals used by oxygen in these bond are best describe as:

0%

$p o r b i t a l s$
0%

sp hybrid orbitals
0%

$s p^{2}$ hybrid orbital
0%

$s p^{3}$ hybrid orbital

Which of the following molecular species is not linear?

0%

$(CN)_{2}$
(2) ${OCN}^{-}$
0%
2
0%

${XeF}_{2}$
(4) $S_{3}^{2 -}$
0%
4

Which of the following statement is correct about ${I_{3}}^{+}$ and ${I_{3}}^{-}$ molecure ions?

0%

both are planar spacies
0%

Number of lone pairs at central atoms are samein both molecure ions
0%

Hybridization of central atoms in both ions are same
0%

both are polar spacies

The compound that has the highest ionic character associated with the X-Cl bond is:

0%

${PCl}_{5}$
0%

${BCl}_{3}$
0%

${CCl}_{4}$
0%

${SiCl}_{4}$

In which of the folllowing transformations, the bond order has increased and the magnetic behaviour has changed?

(a) $C_{2}^{+} \to C_{2}$ (b) ${NO}^{+} \to NO$

0%
1
0%
2
0%
3
0%
4

Incorrect match is:

Electron geometry Possible molecular shape from respective electron geometery

0%

Tetrahadron - Bent
0%

Trigonal bipyramidal - Traingular planar
0%

Octahedron - Square Pyramidal
0%

Pentagonal bipyramidal - Pentagonal planar

In which of the following species central atom is NOT surrounded by exactly 8 valence electrons?

0%

$B {F_{4}}^{-}$
0%

$N C l_{3}$
0%

$P C {l_{4}}^{+}$
0%

$S F_{4}$

The structure of $B_{3} N_{3} H_{6}$ is as follows :

How many derivative structures of $B_{3} N_{3} H_{4} X_{2}$ can be derived from the basic structure, by the

replacement of two hydrogen atoms?

0%
1
0%

(a) 2 (b) 3
0%
3
0%

(c) 4 (d) 5

Correctly match is :

0%

$d_{x^{2} - y^{2}}$ atomic orbital $—$ One nodal plane
0%

$P_{y}$ atomic orbital $—$ Two nodal plane
0%

$σ_{p x}$ $— ψ$ (gerade)
0%

$π_{p y}$ $— ψ$ (ungerade)

In which of the following molecular shape $d_{z^{2 -}}$ orbital must not be involved in bonding?

0%

Pentagonal planar
0%

Trigonal planar
0%

Linear
0%

Square planar

Consider the following reaction:

${MX}_{4} + X'_{2} \to {MX}_{4} X'_{2}$

Then choose correct statement regarding given information:

(a) Both X' atoms occupy axial positions which are formed by overlapping of p and d-orbitals only

(b) All $M — X bond lengths are identical in both {MX}_{4} and {MX}_{4} X'_{2} compounds$

(d) Hybridization of central atom 'M' remains same in both reactant and final product.

0%
1
0%

If atomic number of M is 52 and X and X' are halogens and X' is more electronegative than X.
0%
3
0%
4

Which atom can have more than eight valence electrons when it is forming covalent bond?

0%

H
0%

N
0%

F
0%

Cl

Select the incorrect match:

Statement Shape Example

(a) Bond pair has > 75% HF

p-character

(b) Reduction in axial bond ${SF}_{4}$

is more than that of in

equatorial bond angle

one non-axial d-orbitals are

used in hybridization

(d) Two p-orbitals are used ${SnCl}_{2}$

in hybridization

0%
1
0%
2
0%
3
0%
4

The least polar bond is present in which of the following?

0%

O-F
0%

P-F
0%

Si-N
0%

B-F

Select correct statement(s) :

0%

Acidic strength of $HBr > HCl$ but reverse is true for their reducing property
0%

Basic strength of ${PH}_{3} > {AsH}_{3}$ but reverse is true for their bond angle
0%

Dipole moment of ${CH}_{3} Cl > {CH}_{3} F$ but reverse is true for their $H \hat{C} H$ bond angle
0%

$K_{a_{1}}$ of fumaric acid is higher than maleic acid but reverse is true for their $K_{a_{2}}$

Which set contains only covalently bonded molecules?

0%

$B C l_{3}, S i C l_{4}, P C l_{3}$
0%

$N H_{4} B r, N_{2} H_{4}, H B r$
0%

$I_{2,} H_{2} S, N A I$
0%

$A l_{2}, O_{3}, A S_{4}$

0:0:1

Practice Chemistry Quiz Questions and Answers

0:0:1

Practice Chemistry Quiz Questions and Answers

Support mcqexams.com by disabling your adblocker.