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In bisulphate ion, HSO₄^-, the formal charge on S atom is
1. +6
2. +4
3. +1
4. +2

Among the following isostructural compounds, which one has highest lattice energy ?
1. LiCl
2. MgO
3. NaCl
4. LiF

A $\sigma$ bonded molecule MX₃ 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 hybrid state of S in SO₃ is similar to that of
1. C in C₂H₂
2. C in C₂H₄
3. C in CH₄
4. C in CO

In a chemical change from PCl₃ $\to$ PCl₅ the hybrid state of P changes from :
1. sp² to sp³
2. sp³ to sp²
3. sp³ to sp³d
4. sp³ to dsp

The shape of covalent molecule AX₃ is
1. Triangular
2. T-shape
3. Pyramidal
4. Any of the above three depending upon the number of lone pairs present in A

The geometrical arrangement and shape of $I_3^{-}$ 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 has non-zero dipole moment?
1. PCl₅
2. PCl₃F₂
3. PCl₃Br₂
4. PCl₃(CH₃)₂

Which is incorrect about bond angles?
1. NH₃ > NF₃
2. NF₃ < PF₃
3. NH₃ > PH₃
4. NH₃ > H₂O

Which molecules/ions are most paramagnetic?
1. B₂
2. C₂
3. $O_2^{+}$
4. $O_2^{-}$

The most volatile halogen acid is
1. HF
2. HCl
3. HBr
4. HI

The correct statement is
1. When O₂ is converted into $O_2^{+}$ then bond distance increases
2. When N₂ is converted into $N_2^{+}$ then bond distance increases
3. When CO is converted into CO⁺ then bond distance increases
4. All of these

Which has highest bond energy?
1. CO
2. CO⁺
3. N₂
4. $N_2^{+}$

In which case observed dipole moment is greater than theoretical dipole moment?
1. 
2. 
3. 
4. 

Benzene ring contains
1. 12 $\sigma$ and 3$\pi$
2. 6 $\sigma$ and 3$\pi$
3. 9 $\sigma$ and 3$\pi$
4. 8 $\sigma$ and 2$\pi$