#testseries Master cadre chemistry :-chemical bonding

Q1. In case of alkali metals, the covalent character decrease in in the order
(a)MCl>MI>MBr>MF
(b)MF>MCl>MBr>MI
(c)MF>MCl>MI>MBr
(d)MI>MBr>MCl>MF

Q2. Which of the following is least likely to behave as Lewis base
(a)NH3 (b)BF3. (c)OH-. (d) H2O

Q3 which of the following is polar molecule?
(a)BF3.    (b)SF4.     (c)SiF4.  (d)XeF4

Q4. Dipole induced dipole interactions are present in which of the following pairs
(a) H2O and alcohol
(b)Cl2 and CCl4
(c)HCl and He atoms
(d)SiF4 and He atoms

Q5.XeF2 is isostructural with
(a)TeF2 (b)ICl2-.  (c)SbCl3.    (d)BCl3

Q6. In which of the following pairs both the species are not isostructural 
(a)SiCl4.     (b) Diamond, carbide. 
(c)NH3, PH3
(d)XeF4,XeO4

Q7. Consider the molecules CH4,NH3,and H2O which of the following statement is false?
(a) the H-O-H bond angle in H2O is larger than the H-N-H bond angle in CH4
(b) the H-O-H bond angle in water is smaller than H-N-H bond angle in NH3
(c) the H-C-H bond angle in CH4 is larger than H-N-H the bond angle in ammonia
(d) the H-C-H bond angle in CH, the H-N-H bond angle is ammonia and H-O-H bond angle in water are all greater than 90 degree


Q8 The correct geometry and hybridization for XeF4 are
(a) octahedral, sp3d2
(b) trigonal bipyramidal, sp3d2
(c) planar triangle,sp3d3
(d) square planar, sp3d2

Q9.Which one of the following pairs of species have same bond order?
(a)CO,NO.     (b)O2-,CN-.    (c)CN-,NO+
(d)N+,CN+

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