Chemical Bonding and Molecular Structure

Number of molecules from the following which can exhibit hydrogen bonding is . (nearest integer) CH3OH, H2O, C2H6, C6H6, [figure] , HF, NH3

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

1. Both Statement I and Statement II are false
2. Statement I is true but Statement II is false
3. Statement I is false but Statement II is true
4. Both Statement I and Statement II are true

Total number of species from the following with central atom utilising sp2 hybrid orbitals for bonding is . NH3, SO2, SiO2, BeCl2, C2H2, C2H4, BCl3, HCHO, C6H6, BF3, C2H4Cl2

In the Lewis dot structure for NO2-, total number of valence electrons around nitrogen is .

Match List I with List II. Choose the correct answer from the options given below :

1. (A)-(I), (B)-(IV), (C)-(III), (D)-(II)
2. (A)-(IV), (B)-(I), (C)-(II), (D)-(III)
3. (A)-(I), (B)-(III), (C)-(II), (D)-(IV)
4. (A)-(IV), (B)-(III), (C)-(II), (D)-(I)

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). In the light of the above statements, choose the correct answer from the options given below :

1. (A) is false but (R) is true
2. (A) is true but (R) is false
3. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
4. Both (A) and (R) are true and (R) is the correct explanation of (A)

Number of compounds from the following with zero dipole moment is . HF, H2, H2S, CO2, NH3, BF3, CH4, CHCl3, SiF4, H2O, BeF2

Number of molecules/ions from the following in which the central atom is involved in sp3 hybridization is . NO3-, BCl3, ClO2-, ClO3-

1. 2
2. 4
3. 1
4. 3

Which one of the following molecules has maximum dipole moment?

1. CH4
2. NF3
3. NH3
4. PF5

Number of molecules/species from the following having one unpaired electron is . O2, O2-1, NO, CN-1, O22-