Test: Bond Parameters (NCERT) - NEET MCQ

# Test: Bond Parameters (NCERT) - NEET MCQ

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## 15 Questions MCQ Test NCERTs at Fingertips: Textbooks, Tests & Solutions - Test: Bond Parameters (NCERT)

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Test: Bond Parameters (NCERT) - Question 1

### The correct order of decreasing bond lengths of CO, CO2 and C032- is

Detailed Solution for Test: Bond Parameters (NCERT) - Question 1

As the bond order increases, bond length
decreases.

Test: Bond Parameters (NCERT) - Question 2

### The correct sequence of bond length in single bond,double bond and triple bond of C is

Detailed Solution for Test: Bond Parameters (NCERT) - Question 2

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Test: Bond Parameters (NCERT) - Question 3

### Which of the following willbe the strongest bond?

Detailed Solution for Test: Bond Parameters (NCERT) - Question 3

Bond strength ∝ Difference in electronegativity
of atoms

Test: Bond Parameters (NCERT) - Question 4

Arrange the following in increasing order of covalent character - NaCl, MgCl2, AICI3

Detailed Solution for Test: Bond Parameters (NCERT) - Question 4

Cation size is decreasing in the order:
Ne+ > Mg2+ > Al3+

Al3+ has maximum polarisation effect and Na+
has minimum polarisation effect.

The covalent nature is in the order : AlCl3 > MgCl2 > NaCl

Test: Bond Parameters (NCERT) - Question 5

Match the bond enthalpies given in column II with the molecules given in column I and mark the appropriate choice.

Detailed Solution for Test: Bond Parameters (NCERT) - Question 5

The order of bond enthalpies of the bonds is
given as. Bond order ∝ Bond enthalpy
Hence, single bond enthalpy < double bond enthalpy < triple bond enthalpy

H − H < O = O < N ≡ N

Test: Bond Parameters (NCERT) - Question 6

The given structures I, II and III of carbonate ion represent

Detailed Solution for Test: Bond Parameters (NCERT) - Question 6

The structures represent canonical or resonating structures of carbonate ion.

Test: Bond Parameters (NCERT) - Question 7

Which of the following molecules does not show any resonating structures?

Detailed Solution for Test: Bond Parameters (NCERT) - Question 7

NH3 does not show any resonating structure due to the absence of double bond.

Test: Bond Parameters (NCERT) - Question 8

The canonical or resonating structures of a molecule required to describe the structure of a molecule follow which of the following rules?

Detailed Solution for Test: Bond Parameters (NCERT) - Question 8

Canonical structures differonly in the position
of electrons not in number of paired and unpaired electrons.

Test: Bond Parameters (NCERT) - Question 9

Arrange the following in order of increasing dipole moment: H2O, H2S,BF3

Detailed Solution for Test: Bond Parameters (NCERT) - Question 9

In BF3, dipole moment is zero due to its
symmetrical structure. Summations of all dipoles is zero.

In H2S and H2O due to unsymmetrical structure net +ve dipole is there. H2O has a higher dipole due to the higher electronegativity of oxygen than sulphur.

Test: Bond Parameters (NCERT) - Question 10

Which of the following is non-polar?

Detailed Solution for Test: Bond Parameters (NCERT) - Question 10

Since the dipoles are in opposite directions, the net dipole moment is zero.

Test: Bond Parameters (NCERT) - Question 11

Although F is more electronegative than H, the resultant dipole moment of NHis much more than that of NF3. It can be explained as

Detailed Solution for Test: Bond Parameters (NCERT) - Question 11

Test: Bond Parameters (NCERT) - Question 12

In a diatomic molecule the bond distance is 1X10-8 cm. Its dipole moment is 1.2 D. What is the fractional electronic charge on each atom?

Detailed Solution for Test: Bond Parameters (NCERT) - Question 12

(4.8 X10-10 is a theoretical value of μ..)

Test: Bond Parameters (NCERT) - Question 13

Which of the following are arranged in the decreasing order of dipole moment?

Detailed Solution for Test: Bond Parameters (NCERT) - Question 13

The values of dipole moments of methyl halides:

Test: Bond Parameters (NCERT) - Question 14

In water molecule, the two O—H bonds are oriented at an angle of 104.5°. In BF3, the tliree B—F bonds are oriented at an angle of 120°. In BeF2, the two Be—F bonds are oriented at an angle of 180°. Which of the following will have highest dipole moment?

Detailed Solution for Test: Bond Parameters (NCERT) - Question 14

BeF2 : μ = 0

Test: Bond Parameters (NCERT) - Question 15

What is the correct dipole moment of NH3 and NFrespectively?

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