ECAT Pre Engineering Chemistry Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 6 Chemical Bonding

Try The MCQ's Test For ECAT Chemistry Chapter 6 Chemical Bonding

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ECAT Chemistry Chapter 6 Chemical Bonding

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Question # 1

The number of electron pairs shared in carbon tetrachloride molecule is

Question # 2

Shielding effect intervening electrons causes

Question # 3

Which of the following phenomena will occur when two atoms of the elements having same spin of electron approach for bonding?

Question # 4

The bond order O2molecule is

Question # 5

According to MO Theory, the species O2+ possesses

Question # 6

Molecular orbital picture of N2 indicates

Question # 7

The formation of compounds like PF5, BCI3, SF6indicates that

Question # 8

All covalent bonds formed between the two atoms are non-polar when

Question # 9

Which of the following geometry is associated with the compound in which the central atom assumes sp3d hybridization?

Question # 10

Fluorine molecule is formed by

Question # 11

The three N - Hσ-bonds are made by

Question # 12

Water H2O is liquid while hydrogen sulphide H2S is a gas beause

Question # 13

The shape of methanol, ammonia and water molecule can be explained by assuming

Question # 14

Shape of CIO3is

Question # 15

The driving force for making a bond is

Question # 16

Coordinate covalent bond is present in the molecules

Question # 17

Which of the following molecules has unpaired electrons in anti-bonding molecular orbitals?

Question # 18

Size of an anion is increased as compared to its atom because of the

Question # 19

The bond angle depends upon the

Question # 20

The bond order in No is 2.5 while that in NO+is 3.Which of the following statements is true for these two species?

Question # 21

In H2O molecule the bond angle is

Question # 22

Number of sigma bonds in P4O10is

Question # 23

Electronegativity values of the elements F, CI and Br vary

Question # 24

The number of antibonding electron pairs in O2-molecular ion on the basis of MOT is

Question # 25

The overlapping of two partially filled atomic orbital is in such a way that the probability of finding the electron pair is maximum along the axis joining the two nuclei, the bond is

Question # 26

Planar geometry of molecules is due to

Question # 27

The shape of the molecule SF2Cl2is

Question # 28

The covalent bonds are

Question # 29

One of the following bonds is polar but compound is non-polar

Question # 30

Generally electron affinities for elements in a period from left to right

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ECAT Chemistry Chapter 6 Important MCQ's

Sr.# Question Answer
1 Which of the following has polar bond
A. O2
B. N2
C. HCl
D. Cl2
2 Ionic radius, in a period from left to right
A. Increases
B. Decreases
C. Decreases then increases
D. Increases and decreases
3 Shielding effect intervening electrons causes
A. Decreases in atomic radii in a period from right to left
B. Increase in atomic radii in a period from left to righ t
C. Decrease in atomic radii down the group
D. Increase in atomic radii down the group
4 Shape of CIO3is
A. Triangular pyramidal
B. Tetrahedral
C. Triangular planar
D. Triangular bipyramidal
5 Ca, Mg, Be, Ba, belong to the same group, the order of their ionization energy values is
A. Be > Mg> Ca > Ba
B. Ba > Ca > Mg > Be
C. Ca > Mg > Be > Ba
D. Ba > Mg > Ca > Be
6 The atomic radius of hydrogen is 37
A. Pecometer
B. Manometer
C. Angstrom
D. Micrometer
7 Hydrogen chloride molecule contains
A. Covalent bond
B. Double bond
C. Co-ordinate bond
D. Electrovalent bond
8 From the difference between expected bond energies for the normal covalent bond and experimentally determined values Pauling calculated the values of
A. Ionization potential of elements
B. Electron affinity of elements
C. Electronegativity of elements
D. Bond length
9 Which of the following has zero depole-moment?
A. CIF
B. PCl3
C. SiF4
D. CFCl4
10 Mg becomes isoelectronic with neon when it
A. Loses two electrons
B. Gains two electrons
C. Loses 1 electron
D. Gains 1 electron

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