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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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Total Questions30
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Time Allowed30
ECAT Chemistry Chapter 6 Chemical Bonding
00:00
Question # 1
Which of the following species has unpaired electrons in antibonding molecular orbitals
Question # 2
Ionic radius, in a period from left to right
Question # 3
When elements of group I react with the elements of group VIA theory form
Question # 4
Which of the following geometry is associated with the compound in which the central atom assumes sp3d hybridization?
Question # 5
When of the following is isolelectronic with krypton
Question # 6
Which of the following molecules has unpaired electrons in anti-bonding molecular orbitals?
Question # 7
If two lone pairs are present then bond angle of tetrahedral compound reduces to ______ degrees
Question # 8
Hydrogen chloride molecule contains
Question # 9
Atomic number of Al is 13. When it forms ionic bond with oxygen the number of electrons lost by 1 Al atom is
Question # 10
Covalent compounds are soluble in
Question # 11
A molecule in which sp2hybrid orbitals are used by the central atom in forming covalent bonds in
Question # 12
Which of the following charge
Question # 13
Water H2O is liquid while hydrogen sulphide H2S is a gas beause
Question # 14
Which is made by coordinate covalent bond
Question # 15
The nature of interparticle forces in benzene is
Question # 16
The geometry of 4 sp3hybrid orbitals on an atom is
Question # 17
Which of the following hydrides has the lowest boiling point?
Question # 18
Which of the following has polar bond
Question # 19
An ionic compound M2S3is formed by the metal M,, the metal is
Question # 20
Three sp2hybrid are co-planar at an angle of
Question # 21
Maximum hydrogen bonds in water are
Question # 22
The shape of the molecule SF2Cl2is
Question # 23
Electronegativity values of the elements F, CI and Br vary
Question # 24
B-atom in BF3has
Question # 25
The bond angle H - O - H in ice ins closest to
Question # 26
The driving force for making a bond is
Question # 27
Which of the following species is paramagnetic?
Question # 28
According to VSEPR theory, the shape of the water molecule is
Question # 29
The bond order of individual C - C bond is benzene is
Question # 30
Shielding effect intervening electrons causes
Top Scorers Of ECAT Chemistry Chapter 6 Chemical Bonding MCQ`s Test
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T Tanzeel Ur Rehman 28 - May - 2024 04 Min 11 Sec 115/120 -
A Abdullah Zubair 20 - Dec - 2024 04 Min 30 Sec 115/120 -
M M Umer Arain 03 - Nov - 2024 00 Min 04 Sec 100/120 -
M Manar Abbas 01 - Jun - 2024 04 Min 15 Sec 85/120 -
S Sania Iqbal 14 - May - 2024 06 Min 15 Sec 80/120 -
M Mirza Sibgha 27 - Jul - 2024 10 Min 11 Sec 80/120 -
G GOVT. SUFFA EDUCATION CENTER GIRLS MURIDKE 29 - May - 2024 13 Min 02 Sec 80/120 -
F Faisal Mehar 30 - May - 2024 16 Min 02 Sec 80/120 -
Z zakee 09u 30 - Nov - 2024 17 Min 43 Sec 80/120 -
M Maryam Fatima 18 - Mar - 2024 04 Min 46 Sec 75/120 -
N Noor Fatima 14 - Nov - 2024 06 Min 24 Sec 75/120 -
N Nayab Shahzad 08 - May - 2024 11 Min 21 Sec 70/120 -
M Muntasir Khokhar 21 - May - 2024 05 Min 39 Sec 65/120 -
N Naheed Yasir 26 - May - 2024 13 Min 03 Sec 65/120 -
S Shahid Baloxh 11 - May - 2024 14 Min 20 Sec 65/120
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | Shape of CIO3is |
A. Triangular pyramidal
B. Tetrahedral
C. Triangular planar
D. Triangular bipyramidal
|
| 3 | Which of the following statements is not correct regarding bonding molecular orbitals? |
A. Bonding molecular orbitals possess less energy than atomic orbitals from which they are formed
B. Bonding molecular orbitals have low electron density between the two nuclei
C. Every electron in the bonding molecular orbitals contributes to the attraction between atoms
D. Bonding molecular orbitals are formed when the electron waves undergo constructive interference
|
| 4 | Three sp2hybrid are co-planar at an angle of |
A. 104.5°
B. 109.5°
C. 107°
D. 120°
|
| 5 | Which of the following has highest bond order |
A.
B.
C.
D.
|
| 6 | Antibonding MO is formed by |
A. Addition of atomic orbitals
B. Substraction of atomic orbitals
C. Multiplication of atomic orbitals
D. None of these
|
| 7 | Planar geometry of molecules is due to |
A. sp3hybridization
B. sp2hybridization
C. sp hybridization
D. P - p overlap
|
| 8 | Which of the following species has unpaired electrons in antibonding molecular orbitals |
A.
B.
C.
D.
|
| 9 | Atomic number of Al is 13. When it forms ionic bond with oxygen the number of electrons lost by 1 Al atom is |
A. 1
B. 2
C. 3
D. 4
|
| 10 | Which of the following molecules have multiple bonds |
A. CH4
B. C2H4
C. C2H6
D. CCI4
|
| 11 | The Electro-negatively difference for ionic bond must be greater than |
A. 1.6
B. 1.7
C. 1.8
D. 1.0
|
| 12 | The nature of interparticle forces in benzene is |
A. Dipole-dipole interaction
B. Dispersion force
C. Ion-dipole interaction
D. H-bonding
|
| 13 |
|
A. Excitantion of an electron from 2s to 2p-orbital
B. Transfer of three electrons from B to the other atoms
C. Excitation of two electrons form 2s orbital to 2p orbital
D. Formation of molecular ion
|
| 14 | Hydrogen chloride molecule contains |
A. Covalent bond
B. Double bond
C. Co-ordinate bond
D. Electrovalent bond
|
| 15 | The geometry of 4 sp3hybrid orbitals on an atom is |
A. Square planar
B. Tetrahedral
C. Trigonal planar
D. Linear
|
| 16 | Which of the following has unchanged valency? |
A. H
B. Na
C. Fe
D. Oxygen
|
| 17 | Which carbon is more electronegative? |
A. sp3- hybridized carbon
B. sp-hybridized carbon
C. sp2-hybridized carbon
D. always same irrespective of its hybrid state
|
| 18 | 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
|
| 19 | The bond angles in methane CH4are equal to |
A. 109.5°
B. 107.5°
C. 104.5°
D. 120°
|
| 20 | 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
|
| 21 | Which of the following hydrides has the lowest boiling point? |
A. H2O
B. H2S
C. H2S3
D. H2Te
|
| 22 | The electron affinity of chlorine may be represented by the equation |
A.
B.
C.
D.
|
| 23 | In OF2, number of bond pairs and Ione paris of electrons are respectively |
A. 2,6
B. 2,8
C. 2,10
D. 2,9
|
| 24 | One of the following bonds is polar but compound is non-polar |
A. H2O
B. NH3
C. HCl
D. CO2
|
| 25 | Generally ionization energy of atoms decreases by |
A. Decreases in atomic size
B. Increase in atomic size
C. Increase in nuclear charge
D. None of these
|
| 26 | Covalent compounds are soluble in |
A. Polar solvents
B. Non-polar solvents
C. Concentrated acids
D. All solvents
|
| 27 | The bond angle depends upon the |
A. Types of bonds
B. Number of bonds
C. Non-bonding electron pairs
D. All of the above
|
| 28 | During the formation of a chemical bond the potential energy of the system |
A. Decreases
B. Increases
C. Does not change
D. None of these
|
| 29 | According to VSEPR theory, the shape of the water molecule is |
A. Octahedral
B. Distorted tetrahedral
C. Planar triangle
D. Linear
|
| 30 | Tripple bond is present in |
A. O2
B. H2
C. N2
D. Cl2
|
Test Questions
