Pre Video Test - Chemical BondingContact Number: 9667591930 / 8527521718

Page:

In bisulphate ion,${\mathrm{HSO}}_{4}^{-}$ , the formal charge on S atom is

1. +6

2. +4

3. +1

4. +2

In the electronic structure of acetic acid there

are

1. 16 shared and 8 unshared electrons

2. 8 shared and 16 unshared electrons

3. 12 shared and 12 unshared electrons

4. 18 shared and 6 unshared electrons

Among the following isostructural compounds,

which one has highest lattice energy ?

1. LiCl

2. MgO

3. NaCl

4. LiF

A $\mathrm{\sigma}$ bonded molecule MX_{3} is T-shaped. The

number of non-bonding pairs of electrons is:

1. 0

2. 2

3. 1

4. Can be predicted only if atomic number of M is

known

The shape of covalent molecule AX_{3 }is

1. Triangular

2. T-shape

3. Pyramidal

4. Any of the above three depending upon the

number of lone pairs present in A

If the central atom in certain molecule has two

lone pairs and three bond pairs, the shape of

the molecule could be

1. T-shaped

2. Trigonal planar

3. Trigonal bipyramidal

4. Distorted tetrahedral

The geometrical arrangement and shape of ${\mathrm{I}}_{3}^{-}$ are respectively

1. Trigonal bipyramidal geometry, linear shape

2. Hexagonal structure, linear shape

3. Triangular planar geometry, triangular shape

4. Tetrahedral geometry, pyramidal shape

Which of the following geometry is most

expected for the molecule XeOF_{4}

?

1. Tetrahedral

2. Square pyramid

3. Square planar

4. Octahedral

Which has non-zero dipole moment?

1. PCl_{5}

2. PCl_{3}F_{2}

3. PCl_{3}Br_{2}

4. PCl_{3}(CH_{3})_{2}

Which is the incorrect about bond angles?

1. NH_{3} > NF_{3}

2. NF_{3} < PF_{3}

3. NH_{3} > PH_{3}

4. NH_{3 }> H_{2}O

Which molecules/ions are most paramagnetic?

1. B_{2}

2. C_{2}

3. ${\mathrm{O}}_{2}^{+}$

4. ${\mathrm{O}}_{2}^{-}$

The correct statement is

1. When O_{2} is converted into ${\mathrm{O}}_{2}^{+}$ then bond distance increases

2. When N_{2} is converted into ${\mathrm{N}}_{2}^{+}$ then bond distance increases

3. When CO is converted into CO^{+} then bond istance increases

4. All of these

Which has highest bond energy?

1. CO

2. CO^{+}

3. N_{2}

4. ${\mathrm{N}}_{2}^{+}$

In which case observed dipole moment is greater

than theoretical dipole moment?

Which has linear shape but not sp hibridisation?

1. XeF_{2}

2. ${\mathrm{I}}_{3}^{-}$

3. CO_{2}

4. Both 1 and 2

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