The correct statement about carbene (CH2) is:

(a) In singlet carbene, carbon is sp2-hybridized whereas in triplet carbene, carbon is sp-hybridized

(b) Triplet carbene is less stable than singlet carbene

(c) Stability of halocarbenes is: CHF>CHCL>CHBr

(d) None of the above

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Which pair of molecules are polar species?

(a) CO2 and H2O

(b) BF3 and PCL3

(c) SO2 and SCL2

(d) CS2 and SO3

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In which molecule does the chlorine atom has positive partial charge? 

(a) HCl

(b) BrCl 

(c) OCl2

(d) SCl2

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The incorrect order of lattice energy is:

(a)AlF3>MgF2          (b) Li3N>Li2O

(c) NaCl>LiF           (d)TiC>ScN

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Which of the following set of species have planar structures?

(a) I3-, CH3, CLO3-, SiF62-

(b) I3+, ICl4-, Al2Cl6, TeCl4

(c) SCl2, N2O5, SF4,XeOF4

(d) I2Cl6, XeF2, BrF4-

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Both NSiH33 and NHSiH32compounds have trigonal planer skeleton. Incorrect statement about both compound is :

(a) SiNSi bond angle in NHSiH32 > SiNSi bond angle in NSiH33

(b) N-Si bond length in NHSiH32>N-Si bond length in NSiH33

(c) N-Si bond length in NHSiH32<N-Si bond length in NSiH33

(d) Back bonding strength in NHSiH32> Back bonding strength in NSiH33

Concept Questions :-

Types of Bonding
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Which ionic compound has the largest amount of lattice energy?

(a) NaF                      (b)AlF3  (c)AIN                       (d)MgF2

Concept Questions :-

Lattice/Hydration Energy
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Which of the following attraction is strongest?

(a) 

(b) 

(c) 

(d) 

Concept Questions :-

Types of Bonding
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The incorrect statement regarding OSiH32 and OCl2 molecule is/are:

(a) The strength of back bonding is more in OSiH32 molecule than OCl2 molecule

(b) SiOSi bond angle in OSiH32 is greater than ClOCl bond angle in OCl2

(c) The nature of back bond in both molecules is 2pσ3dπ

(d) Hybridisation of central Oatom in both molecules is same

Concept Questions :-

Hybridisation
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Which of the following compound have the same no. of lone pair with their central atom?

(a) XeF5-              (b) BrF3                 (c) XeF2                     (d) H3S+               

(e) Triple Methylene     

options are as follows :        

(a) (iv) and (v)                                     (b) (i) and (iii) 

(c) (i) and (ii)                                       (d) (ii) (iv), (v)

Concept Questions :-

Hybridisation
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