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

Two H-atom combine to form a strong H2molecule due to

Question # 2

On the basis of VSEPR theory SO2is a

Question # 3

Elements have the tendency to attain 8 electrons in their valence shell. This is known as

Question # 4

When two hydrogen atoms approach to form a chemical bond

Question # 5

The equation for the first ionization energy of hydrogen is

Question # 6

The bond angle H - O - H in ice ins closest to

Question # 7

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

Question # 8

The shape of CIO-3according to valence shell electron pair repulsion theory will be

Question # 9

Which of the following hydrides has the lowest boiling point?

Question # 10

The number of bonds in nitrogen molecule is

Question # 11

The force which holds the atoms together to form a compound is called

Question # 12

Atomic number of Al is 13. When it forms ionic bond with oxygen the number of electrons lost by 1 Al atom is

Question # 13

Which of the following has unchanged valency?

Question # 14

Noble gases have the electronic configuration with their valance shell ns2np6except one

Question # 15

Ca, Mg, Be, Ba, belong to the same group, the order of their ionization energy values is

Question # 16

From the difference between expected bond energies for the normal covalent bond and experimentally determined values Pauling calculated the values of

Question # 17

Maximum hydrogen bonds in water are

Question # 18

Which for the following has no dipole moment

Question # 19

The atomic radius of hydrogen is 37

Question # 20

Three sp2hybrid are co-planar at an angle of

Question # 21

The electronegativeities of F,Cl,Br and I are 4.0,3.0,2.8,2.5 respectively.Hydrogen halide with a high percentage of ionic character is

Question # 22

Outer shells of two elements X and Y have two and six electrons respectively. If they combine, the expected formula of compound will be

Question # 23

The driving force for making a bond is

Question # 24

Which of the following has zero depole-moment?

Question # 25

Which of the following has polar bond

Question # 26

Which of the following species is paramagnetic?

Question # 27

Generally the bond formed by metals with non-metals is

Question # 28

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

Question # 29

In a group the atomic size increase downward due to

Question # 30

Which of the following molecules have multiple bonds

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ECAT Chemistry Chapter 6 Important MCQ's

Sr.# Question Answer
1 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?
A. Bond length in NO+is greater than in NO
B. Bond length in unpredictable
C. Bond length in NO+is equal to that in NO
D. Bond length in NO is greater than in NO+
2 The bond order of individual C - C bond is benzene is
A. One
B. Two
C. Between one and two
D. One and two alternately
3 The geometry of 4 sp3hybrid orbitals on an atom is
A. Square planar
B. Tetrahedral
C. Trigonal planar
D. Linear
4 Which of the following charge
A. Li
B. Be
C. H
D. He
5 The bond order O2molecule is
A. 1
B. 2
C. 3
D. Zero
6 Planar geometry of molecules is due to
A. sp3hybridization
B. sp2hybridization
C. sp hybridization
D. P - p overlap
7 The most suitable method of the separation of a mixture of ortho and para-nitrophenol mixed in the ratio of 1: 1 is
A. Distrillation
B. Crystallization
C. Vapourisation
D. Colour spectrum
8 Which of the following has zero depole-moment?
A. CIF
B. PCl3
C. SiF4
D. CFCl4
9 Which of the following species is paramagnetic?
A. CO2
B. NO
C. O2-
D. CN
10 Which of the following molecules have sp3hybridized carbon
A. CH4
B. C2H4
C. C2H2
D. CO2

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