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The quiz is designed for Chemical Bonding chapter for JEE Main level.
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Question 1 of 21
1. Question
4 pointsIn diborane B2H6
(a) All are 2 electron s-bonds
(b) Contains two 3 centre 2 electron bonds
(c) All hydrogens can be replaced by –CH3 groups
(d) None of these
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Question 2 of 21
2. Question
4 pointsClO3 has got
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Question 3 of 21
3. Question
4 pointsC – N bond length in NH2CONH2 is
(a) less than that of C – N s-bond length
(b) greater than that of C – N s-bond length
(c) same
(d) none of these
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Question 4 of 21
4. Question
4 pointsSelect the correct one from the following.
(a) Cl, Ar have largest ionization potential
(b) CO2, NH3 have non zero dipole moment
(c) Cl2 has less boiling point than Br2 because of less vander Waals force
(d) none of these
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Question 5 of 21
5. Question
4 pointshas
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Question 6 of 21
6. Question
4 pointsComparison of dipole moments of CH3NO2 and Ph-NO2 is
(a) CH3NO2 > PhNO2
(b) PhNO2 ≥ CH3NO2
(c) PhNO2 = CH3NO2
(d) PhNO2 > CH3NO2 for greater charge separation
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Question 7 of 21
7. Question
4 pointsBCl3 does not exist as dimmer, but BH3 exists, because
(a) Chlorine is more electronegative than hydrogen.
(b) There is pπ – pπ back bonding in BCl3 but BH3 does not contain such multiple bonding.
(c) Large sized chlorine atoms do not fit in between the small boron atoms whereas small sized hydrogen atoms gets fitted between boron’s.
(d) None.
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Question 8 of 21
8. Question
4 pointsWhich of the following is incorrect with respect to the property as indicated:
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Question 9 of 21
9. Question
4 pointsWhich of the following ions does not have S – S linkage?
(a) S2O52- (b) S2O62- (c) S2O32- (d) S2O82-
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Question 10 of 21
10. Question
4 pointsWhich of the following compounds has maximum percentage of ionic character ?
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Question 11 of 21
11. Question
4 pointsNCl3 + H2O → A + B ; Here A and B are
(a) N(OH)3 and HCl (b) HNO3 and HCl
(c) HNO2 and HOCl (d) NH3 and HOCl
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Question 12 of 21
12. Question
4 pointsIn which of the following compounds all the bond lengths are not same?
(a) PF5 (b) PCl5 (c) BF3 (d) CH4
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Question 13 of 21
13. Question
4 pointsWhich of the following is not ioslectronic with CO2?
(a) N3‑ (b) NO2– (c) CNO– (d) (NCN)2-
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Question 14 of 21
14. Question
4 pointsFormation of which of the following compounds is not possible?
(a) POCl3 (b) NF5 (c) NCl5 (d) PCl5
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Question 15 of 21
15. Question
4 pointsWhich of the following is widely used in refrigeration?
(a) CCl4 (b) CCl2F2 (c) CH4 (d) SbCl5
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Question 16 of 21
16. Question
4 pointsBF3 forms an adduct with NH3 becausea
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Question 17 of 21
17. Question
4 pointsWhich one of the following molecules has zero dipole moment?
(A) HI (B) H2O
(C) CO2 (D) HClCorrect
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Question 18 of 21
18. Question
4 pointsIn which of the following compounds, the angle between two covalent bonds is the highest?
(A) CH4 (B) NH3 (C) H2O (D) H2O2
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Question 19 of 21
19. Question
4 pointsIf the bond length and dipole moment of a diatomic molecule are 1.25 Å and 1.0 D respectively. What ionic character of the bond?
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Question 20 of 21
20. Question
4 pointsWhich one of the following is a correct set?
(A) H2O, SP3, angular (B) H2O, SP2, linear
(C) NH4+, dSP2, square planar (D) H2O, SP3, linearCorrect
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Question 21 of 21
21. Question
4 pointsWhich of the following is correct?
(A) the number of electrons present in the valence shell of S in SF6 is 12
(B) the rate of ionic reactions are very slow
(C) according to VSEPR theory, SnCl2 is a linear molecule
(D) the correct order of ability to form ionic compounds among Na+, Mg2+ and Al3+ is Al3+ > Mg2+ > Na+Correct
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