Chapter # 04, Structure of molecules

MCQ: Atoms of metals form

  1. anions
  2. molecules
  3. cation
  4. none of above

MCQ: Interaction between highly electron deficient hydrogen and highly electronegative atom is called

  1. Covalent bond
  2. ionic bond
  3. dipole-dipole interaction
  4. hydrogen bond

MCQ: Non-metals have

  1. high ionization energies
  2. low ionization energies
  3. zero ionization energy
  4. infinite ionization energy

MCQ: Two F-atoms share one electron in their outermost shell to gain electronic configuration of

  1. Xe
  2. Ar
  3. Kr
  4. Ne

MCQ: Number of electrons lost by atoms of group IIIA equals

  1. 2
  2. 4
  3. 5
  4. 3

MCQ: When partial positive end of one molecule is attracted weakly to partial negative end then force between them is

  1. coulomb’s force
  2. electrostatic force
  3. dipole-dipole interaction
  4. ionic bond

MCQ: In NaCl crystal each Na+ ion is surrounded by

  1. 6 Cl ions
  2. 6 Na+ ions
  3. 8 Cl ions
  4. 12 Cl ions

MCQ: At room temperature most of ionic compounds are

  1. amorphous solids
  2. crystalline solids
  3. liquids
  4. gases

MCQ: Chemical bonding between atoms is

  1. electrical in nature
  2. mechanical in nature
  3. both A and B
  4. potential in nature

MCQ: Tendency of atoms to acquire eight electrons in their valence shell is

  1. octet rule
  2. duplet rule
  3. triplet rule
  4. none of above

MCQ: When one atom forms cation by losing electron and other forms anion by accepting that electron then bond form between them is

  1. Covalent bond
  2. Ionic bond
  3. coordinate covalent bond
  4. none of above

MCQ: Nobel gases are stable because they contain

  1. 7 electrons in valence shell
  2. 8 electrons in valence shell
  3. 5 electrons in valence shell
  4. 4 electrons in valence shell

MCQ: Bonds which involve 3 shared electron pairs are

  1. double covalent bond
  2. single covalent bond
  3. triple covalent bond
  4. none of above

MCQ: To form anion, non-metal atom

  1. looses electrons
  2. gains electron
  3. losses protons
  4. gain protons

MCQ: When two identical atoms share electron pairs and exert force on each other then bond form is

  1. non-polar covalent bond
  2. polar covalent bond
  3. double covalent bond
  4. coordinate covalent bond

MCQ: Synthetic resins are used on places where

  1. air resistance is required
  2. water resistance is required
  3. friction is required
  4. adhesion is required

MCQ: Oxygen belongs to group VIA so number of electrons in its valence shell are

  1. 6
  2. 7
  3. 8
  4. 4

MCQ: Electron pairs which are not shared by atoms are called

  1. electron pairs
  2. lone pairs
  3. proton pairs
  4. shell pairs

MCQ: Strength of intermolecular forces from ionic or covalent bond is

  1. weaker
  2. stronger
  3. equal
  4. none of above

MCQ: Ionic crystals have

  1. low melting points
  2. moderate melting points
  3. high melting points
  4. none of above

MCQ: Helium is chemically

  1. active
  2. inert
  3. unstable
  4. none of above

MCQ: Bond formed by mutual sharing of electron is

  1. ionic bond
  2. coordinate covalent bond
  3. covalent bond
  4. none of above

MCQ: When atoms loose or gain electrons they acquire configuration of

  1. next noble gas
  2. halogens
  3. alkali metals
  4. alkaline metals

MCQ: Covalent compound among following is

  1. NaCl
  2. MgO
  3. H2O
  4. KF

MCQ: Melting point of table salt is

  1. 800°C
  2. 801°C
  3. 901°C
  4. 1000°C