NEET Chemistry Chemical Bonding and Molecular Structure Questions Solved


Which of the following would have a permanent dipole moment ?

(a) BF3

(b) SiF4

(c) SF4

(d) XeF4

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In the case of alkali metals, the covalent character decreases in the order

(a) MCl > MI > MBr > MF

(b) MF > MCl >  MBr > M

(c)MF > MCl > MI > MBr

(d) MI > MBr > MCl > MF

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Which of the following two are isostructural? 

(a)XeF2, and IF2-

(b)NH3, and BF3

(c)CO32-, and SO32-

(d)PCl5, and ICl5

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Which one of the following species does not exist under normal conditions ?

(a) Be2+

(b) Be2

(c) B2

(d) Li2

 

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Which one of the following is not paramagnetic ?

(a) NO

(b) N2+

(c) CO

(d) O2-

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In a regular octahedral molecule, MX6 the number of X-M-X bonds at 180°is

(a) 3

(b) 2

(c) 6

(d) 4

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The angular shape of ozone molecule (O3) consists of 

(a) 1 sigma and 2 pi-bonds

(b) 2 sigma and 2 pi-bonds

(c) 1 sigma and 1 pi-bonds

(d) 2 sigma and 1 pi-bonds

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Which of the following is not isostructural with SiCl4

(a) SCl4     

(b) SO42-

(c) PO43-

(d) NH4+

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In which of the following molecules are all the bonds not equal ?

[2006]

(a) ClF3

(b) BF3

(c) AlF3

(d) NF3

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The correct order of increasing bond angles in the following species is

(a)Cl2O < ClO2ClO2-

(b) ClO2 < Cl2O < ClO2-

(c) Cl2O < ClO2- < ClO2  

(d) ClO2- < ClO2 < Cl2

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