Select correct statement(s) :

(a) Acidic strength of HBr>HCl but reverse is true for their reducing property 

(b) Basic strength of PH3>AsH3 but reverse is true for their bond angle

(c) Dipole moment of CH3Cl>CH3F but reverse is true for their HC^H bond angle

(d) Ka1 of fumaric acid is higher than maleic acid but reverse is true for their Ka2

Concept Questions :-

Acid, Base and Fajan's Rule
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Which set contains only covalently bonded molecules?

(a) BCl3 , SiCl4 ,PCl3

(b) NH4Br , N2H4,HBr

(c) I2 ,H2S , NAI

(d) Al2,O3 , AS4

Concept Questions :-

Covalent Bonding
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In which of the following species, d-orbitals having xz and yz two nodal planes involved in hybridization of central atom?

(a) IO2F2-                                  (b) ClF4-

(c) IF7                                       (d) None of these 

Concept Questions :-

Hybridisation
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Select pair of compound in which both have differant hybridization but have same molecular geomatery:

(a)  BF3,BrF3       

(b) ICI2,BeCI2   

(c)BCI3,PCI3   

(d) PCI3,NCI3

Concept Questions :-

Hybridisation
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Which molecule does not exist?

(a) OF2

(b) OF4

(c) SF2

(d) SF4

Concept Questions :-

Covalent Bonding
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A compound contains three elements A, B and C , if the oxidation of A = +2, B = +5 Aand C = -2, the possible formula of the compound is:

 (a) A3(B4C)2

 (b) A3(BC4)2

 (c) A2(BC3)2

 (d) ABC2

Concept Questions :-

Types of Bonding
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The spacies having no pπ-pπ bond but has bond order equal to that of O2

(a) CIO-3      (b) PO43-   

(c)SO42-    (d) XeO3

Concept Questions :-

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Which pair of atom form strongest ionic bond?

(a) Al and As

(b) Al and N

(c) Al and Se

(d) AL and O

Concept Questions :-

Ionic Bonding
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The correct order of increasing s-character (in percentage) in the hybrid orbitals of the following molecules/ions is:

(i) CO32-           (ii) XeF4                (iii) I3                     (iv) NCI3                         (v) BeCl2

(a) (ii)<(iii)<(iv)<(i)<(v)                             (b) (ii)<(iv)<(iii)<(v)<(i)

(c) (iii)<(ii)<(i)<(v)<(iv)                             (d) (ii)<(iv)<(iii)<(i)<(v)

Concept Questions :-

Hybridisation
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How many resonance forms can be written for the nitrate ion, (NO3-)?

(a) 1

(b) 2

(c) 3

(d) 4

Concept Questions :-

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