Chemical Bonding: MCQ Test
25 questions · pick one option for each · submit when you finish to see your score and the correct answers.
Question 1 of 25
electrovalent bond is formed
- Abetween positive ions
- Bbetween negative ions
- Cbetween oppositely charged ions
- Dnone of these
Question 2 of 25
Liquid sodium chloride can conduct electric current because it contains
- Afree electrons
- Bfree ions
- Cfree molecules
- Dsodium and chlorine atoms
Question 3 of 25
An ionic bond is formed when
- ACombining atoms gain electrons
- BThe combining atoms lose electrons.
- CCombination of a metallic element with a nonmetallic element
- DTwo metallic elements react with each other
Question 4 of 25
Which of the following molecules has an electrovalent bond?
- ACCl⁴
- BN²
- CCH⁴
- DCaCl²
Question 5 of 25
The shape of the ethylene molecule is
- Aunilinear
- Btetrahedral
- Cflat triangular
- Doctahedral
Question 6 of 25
Sodium chloride contains
- Acovalent bond
- BSub-covalent promise
- Celectrovalent bond
- Dnone of these
Question 7 of 25
Hydrogen has a tendency to gain one electron and attain the electronic configuration of helium. This tendency is similar to—
- Afrom alkali metals
- Bfrom inert gases
- Cfrom alkaline earth metals
- Dfrom halogens
Question 8 of 25
An example of a covalent compound is
- AKCI
- BBaO
- CCHCI,
- DCaH
Question 9 of 25
The shape of carbon tetrachloride molecule is
- Apyramidal
- Bsquare planar
- Ctetrahedral
- DDistorted tetrahedral
Question 10 of 25
Mark the compound which has covalent and co-ordinate bonds.
- AH²O
- BNH⁴CI
- CSO³
- DSO²
Question 11 of 25
What happens when a chemical bond is formed?
- AEnergy is always absorbed
- BEnergy is always released
- CMore energy is released than is absorbed
- DEnergy is neither absorbed nor released.
Question 12 of 25
The molecule with linear structure is
- ACO²
- BNO²
- CSO²
- DS¹ O²
Question 13 of 25
The high boiling point of water is due to
- AIts higher specific heat
- BIts higher dielectric constant
- Clow dissociation of water molecules
- Dhydrogen bonding in water molecules
Question 14 of 25
An anion is formed when
- Aatom gains electron
- Batom loses electron
- CAtom receives a money order from outside
- Dthe proton is ejected from the atom
Question 15 of 25
Which one of the following is a covalent compound?
- Acalcium chloride
- BMagnesium Fluoride
- Csodium chloride
- Dcarbon tetrachloride
Question 16 of 25
Which of the following compounds does not have hydrogen bonding?
- ACH²
- BH²O
- CNH³
- DCH³COOH
Question 17 of 25
When two atoms of the same element combine, the nature of the bond between them will be
- AIonic
- Bcovalent
- CPolar covalent
- Dnonpolar covalent
Question 18 of 25
Hydrogen chloride is a gas, but hydrogen fluoride is a low-volume liquid because
- AH-F bond is strong
- BThe H-F bond is weak
- CDue to hydrogen bonding, molecules get associated.
- DHydrogen fluoride is a weak acid
Question 19 of 25
Methane molecule has—
- Abivalent bond
- Btrivalent bond
- Csingle covalent bond
- Dnone of these
Question 20 of 25
In which of the following compounds hydrogen bonding is present?
- AHF
- BHCl
- CHBr
- DHI
Question 21 of 25
Covalent compounds have low melting and boiling points because
- AThese are less active.
- BThey do not ionize in water.
- CThese are usually insoluble in water.
- DIntermittent burns are weak in these
Question 22 of 25
Which of the following compounds has tetrahedral shape?
- Aammonia
- Bcarbon tetrachloride
- CWater
- DAcetylene
Question 23 of 25
Which of the following has electrovalent bond?
- AO²
- BCH⁴
- CCHCl³
- DNaBr
Question 24 of 25
What causes covalent bonding?
- Acomplete transfer of electrons
- Bpartial transfer of electrons
- Cfractionation of electrons
- Ddonation of electrons
Question 25 of 25
A cation is formed when
- Aatom gains electron
- Batom loses electron
- CThe atom receives positive charge from outside
- Dthe proton is ejected from the atom