Give the correct order of initials and F for following statements. use T if statement is true and F if it is false :

(a) The order of repulsion betweeen different pair of electrons is lp-lp>lp-bp>bp-bp 

(b) In general , as the number of lone pair of electrons on central atom increases, value of bond angle from normal bond angle also increases

(c) The number of lone pair on O in H2O is 2 while on N in NH3 is 1 

(d) The structure of xeon fluorides and xenon oxyfluorides could not be explained on the basis of VSEPR 

(1) TTTF 

(2) TFTF

(3) TFTT 

(4) TFFF

Subtopic:  V.S.E.P.R & V.B.T |
 65%
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Which species is planar?

(a)CO32-

(b) SO32-

(c) ClO3-

(d) BF4-

Subtopic:  Hybridisation |
 71%
From NCERT
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On the left are given decreasing orders of elements for a certain property and on right side is given the property. The incorrect order for the given properties is:

1. AlF3>MgO>MgF2    : Lattice energy

2. Li>Na>Al>Mg       : Electron affinity

3. PF5> SF6 > SiF4    : Lewis acidic character

4. SiCl4>SiBr4 >SiI4   : Decreasing ionic character

Subtopic:  Lattice & Hydration Energy |
From NCERT
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What is the shape of the IBr2- ion ?

(1) Linear 

(2) Bent shape with bond angle of about 90° 

(3) Bent shape with bond angle of about 109°

(4) Bent shape with bond angle of about 120°

Subtopic:  Hybridisation |
 71%
From NCERT
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What is the shape of the ClF3 molecule?

(1) Trigonal planar 

(2) Trigonal pyramid 

(3) T-shaped 

(4) Tetrahedral 

Subtopic:  Hybridisation |
 77%
From NCERT
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Which of the following compound has the smallest bond angle (XAZ) in each series respectively?

(1) OSF2         OSCl2             OSBr2

(2) SbCl3     SbBr3              SbI3

(3) PI3         AsI3                  SbI3

Options are as follows: 

(a) OSF2, SbCl and PI3    (b) OSBr2, SBI3 and PI3

(c) OSF2, SBI3 and PI3       

(4) OSF2, SBCl3 and SBI3

Subtopic:  Hybridisation |
 50%
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According to VSEPR theory in, which species do all the atoms lie in the same plane?

1. CH3+                                   2. CH3-

(1) 1 only                               

(2) 2 only 

(3) both 1 and 2                     

(4) neither 1 nor 2

Subtopic:  Hybridisation |
 68%
From NCERT
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Idetify the correct sequence of increasing number of π bonds in the structure of the following molecules :

(I) H2S2O6     (II) H2SO3   (III)  H2S2O5

1. I II and III         2. II I and III

3. II III and I         4. I III and II

Subtopic:  Types of Chemical Bond |
 61%
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The state of hybridisation of central atom in dimer of BH3 and BeH2 is:

(1) sp2,sp2   

(2) sp3,sp2 

(3) sp3,sp3 

(4) sp2,sp3

Subtopic:  Hybridisation |
 56%
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Which of the following species/molecules does not have same number of bond pairs and lone pairs?

(1) OCN- 

(2) H2O

(3) C2H2Cl2

(4) O3

Subtopic:  Hybridisation |
 57%
From NCERT
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