ECAT Pre Engineering Chemistry Chapter 6 MCQ Test With Answer

Top Scorers Of ECAT Chemistry Chapter 6 Chemical Bonding MCQ`s Test

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Abdullah Zubair 20 - Dec - 2024 04 Min 30 Sec 115/120
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M Umer Arain 03 - Nov - 2024 00 Min 04 Sec 100/120
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GOVT. SUFFA EDUCATION CENTER GIRLS MURIDKE 29 - May - 2024 13 Min 02 Sec 80/120
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Naheed Yasir 26 - May - 2024 13 Min 03 Sec 65/120
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Shahid Baloxh 11 - May - 2024 14 Min 20 Sec 65/120

Sr. #	Question	Answer
1	Two H-atom combine to form a strong H₂molecule due to	A. Increase in potential energy B. Decrease in potential energy C.Energy remains unchanged D. Distance is increased
2	The number of antibonding electron pairs in O^2-molecular ion on the basis of MOT is	A. 4 B. 3 C.2 D. 5
3	N-atom forms three covalent bonds, its electronic configuration is
4	Molecular orbital picture of N₂indicates	A. One unpaired electron B. Two unpaired electron C.No unpaired electron D. None of these
5	If two lone pairs are present then bond angle of tetrahedral compound reduces to ______ degrees	A. 109.5° B. 107.5° C.104.5° D. None
6	The degree of polarity of molecule is known as its	A. Dipole moment B. Moment arm C.Bond energy D. Ionic character
7	Nitrogen in NH₃is sp³hybridized but the bond angle in NH₃is 107° and not 109.5° due to	A. sp³orbital planar B. sp³orbital trigonal C.Repulsion between lone pair and bonded pairs D. None of them
8	Electronegativity values of the elements F, CI and Br vary	A. F > CI > Br B. Br > CI > F C.Cl > Br > F D. CI > F > Br
9	Generally electron affinities for elements in a period from left to right	A. Decreases B. Increases C.Remain same D. Increases alternatively
10	Noble gases have the electronic configuration with their valance shell ns²np⁶except one	A. He B. Ne C.Kr D. Xe
11	The force which holds the atoms together to form a compound is called	A. A chemical bond B. Van der waal's force C.Dispersion force D. London force
12	Which of the following has unchanged valency?	A. H B. Na C.Fe D. Oxygen
13	Which of the following is a polar molecules	A. Carbon dioxide B. Carbon tetrachloride C.Methanol D. Ethane
14	H-bonding is not present in	A. Glycerine B. Water C.Hydrogen sulphide D. Hydrogen fluride
15	The ionic bonds are	A. Unidirectional B. Bi-directional C.Non-directional D. Multi-directional
16	Antibonding MO is formed by	A. Addition of atomic orbitals B. Substraction of atomic orbitals C.Multiplication of atomic orbitals D. None of these
17	Which of the following charge	A. Li B. Be C.H D. He
18	According to MO Theory, the species O₂+ possesses	A. bond order of 2.5 B. three unpaired C.diamagnetic character D. stability lower then O₂
19	Which of the following molecules have its central atom sp²hybridized	A. CH₄ B. C₂H₂ C.C₂H₄ D. CCl₄
20	Which of the following species has unpaired electrons in antibonding molecular orbitals
21	The Electro-negatively difference for ionic bond must be greater than	A. 1.6 B. 1.7 C.1.8 D. 1.0
22	Water H₂O is liquid while hydrogen sulphide H₂S is a gas beause	A. Water has higher molecular weight B. Hydrogen sulphide is a weak acid C.Sulphure has high electronegativity than oxyhe D. Water molecules associate through hydrogen bonding
23	Fluorine molecule is formed by	A. The axial p-p overlap B. The sidewise p-p overlap C.The axial s-p overlap D. The overlap of two sp²hybrid orbitals
24	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
25	Generally the bond formed by metals with non-metals is	A. Ionic B. Covalent C.Polar D. Non- polar
26	Outer shells of two elements X and Y have two and six electrons respectively. If they combine, the expected formula of compound will be	A. XY B. X₂Y C.X₂Y₃ D. XY₂
27	Which of the following species is paramagnetic?	A. CO₂ B. NO C.O^2- D. CN
28	Planar geometry of molecules is due to	A. sp³hybridization B. sp²hybridization C.sp hybridization D. P - p overlap
29	XeF₄has shape of	A. Sphere B. Trigonal bipyramidal C.Tetrahedral D. Square planar
30	In sp²hybridization bond angle is _____	A. 120° B. 180° C.109.5° D. None

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ECAT Pre Engineering Chemistry Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 6 Chemical Bonding

ECAT Chemistry Chapter 6 Chemical Bonding

Generally the bond formed by metals with non-metals is

The electron affinity of chlorine may be represented by the equation

Planar geometry of molecules is due to

H-bonding is not present in

The tendency of an atom to attract shared electron pair towards itself is called

The most suitable method of the separation of a mixture of ortho and para-nitrophenol mixed in the ratio of 1: 1 is

Which is made by coordinate covalent bond

The geometry of 4 sp3hybrid orbitals on an atom is

Which of the following charge

The bond order for He2molecule is

Among the alkaline earth metals the element forming predominantly covalent compounds is

The shape of gaseous SnCl2is

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

Which one of these is weakest?

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

Which carbon is more electronegative?

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

The formation of compounds like PF5, BCI3, SF6indicates that

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

The covalent bonds are

Mg becomes isoelectronic with neon when it

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

When elements of group I react with the elements of group VIA theory form

Electronegativity values of the elements F, CI and Br vary

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

The number of bonds in nitrogen molecule is

The driving force for making a bond is

Number of sigma bonds in P4O10is

A bond between two atoms may be obtained by sharing of electrons such a bond is called

Tripple bond is present in

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Top Scorers Of ECAT Chemistry Chapter 6 Chemical Bonding MCQ`s Test

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The geometry of 4 sp³hybrid orbitals on an atom is

The bond order for He₂molecule is

The shape of gaseous SnCl₂is

The formation of compounds like PF₅, BCI₃, SF₆indicates that

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

Number of sigma bonds in P₄O₁₀is