Free & Premium Study Material · Online Courses · Instant Download+91 99398 78821 · support@downloadstore.in
downloadstoreSTUDY MATERIAL
LoginRegister🛒0

Chemical Bonding

27 MCQ questions with answers and explanations · page 1 of 2

Test yourself▶ 25 question test

Q1. A cation is formed when

  1. Aatom gains electron
  2. Batom loses electron
  3. CThe atom receives positive charge from outside
  4. Dthe proton is ejected from the atom
Show answer & explanation

Answer: B) atom loses electron

Q2. An anion is formed when

  1. Aatom gains electron
  2. Batom loses electron
  3. CAtom receives a money order from outside
  4. Dthe proton is ejected from the atom
Show answer & explanation

Answer: A) atom gains electron

Q3. The common name of a compound made up of ions is

  1. Aelectrical connector
  2. BCo-ordinator
  3. CDeputy Co-ordinator
  4. Dnone of these
Show answer & explanation

Answer: A) electrical connector

Q4. An ionic bond is formed when

  1. ACombining atoms gain electrons
  2. BThe combining atoms lose electrons.
  3. CCombination of a metallic element with a nonmetallic element
  4. DTwo metallic elements react with each other
Show answer & explanation

Answer: C) Combination of a metallic element with a nonmetallic element

Q5. electrovalent bond is formed

  1. Abetween positive ions
  2. Bbetween negative ions
  3. Cbetween oppositely charged ions
  4. Dnone of these
Show answer & explanation

Answer: C) between oppositely charged ions

Q6. Which of the following compounds does not have ionic bonding?

  1. Apotassium nitrate
  2. Bsodium chloride
  3. Ccalcium chloride
  4. Dmethane
Show answer & explanation

Answer: D) methane

Q7. Which of the following molecules has an electrovalent bond?

  1. ACCl⁴
  2. BN²
  3. CCH⁴
  4. DCaCl²
Show answer & explanation

Answer: D) CaCl²

Q8. Which of the following has electrovalent bond?

  1. AO²
  2. BCH⁴
  3. CCHCl³
  4. DNaBr
Show answer & explanation

Answer: D) NaBr

Q9. What causes covalent bonding?

  1. Acomplete transfer of electrons
  2. Bpartial transfer of electrons
  3. Cfractionation of electrons
  4. Ddonation of electrons
Show answer & explanation

Answer: C) fractionation of electrons

Q10. When two atoms of the same element combine, the nature of the bond between them will be

  1. AIonic
  2. Bcovalent
  3. CPolar covalent
  4. Dnonpolar covalent
Show answer & explanation

Answer: D) nonpolar covalent

Q11. Methane molecule has—

  1. Abivalent bond
  2. Btrivalent bond
  3. Csingle covalent bond
  4. Dnone of these
Show answer & explanation

Answer: C) single covalent bond

Q12. The shape of the ethylene molecule is

  1. Aunilinear
  2. Btetrahedral
  3. Cflat triangular
  4. Doctahedral
Show answer & explanation

Answer: C) flat triangular

Q13. Which of the following compounds has tetrahedral shape?

  1. Aammonia
  2. Bcarbon tetrachloride
  3. CWater
  4. DAcetylene
Show answer & explanation

Answer: B) carbon tetrachloride

Q14. Covalent compounds have low melting and boiling points because

  1. AThese are less active.
  2. BThey do not ionize in water.
  3. CThese are usually insoluble in water.
  4. DIntermittent burns are weak in these
Show answer & explanation

Answer: D) Intermittent burns are weak in these

Q15. Sodium chloride contains

  1. Acovalent bond
  2. BSub-covalent promise
  3. Celectrovalent bond
  4. Dnone of these
Show answer & explanation

Answer: C) electrovalent bond

Q16. What happens when a chemical bond is formed?

  1. AEnergy is always absorbed
  2. BEnergy is always released
  3. CMore energy is released than is absorbed
  4. DEnergy is neither absorbed nor released.
Show answer & explanation

Answer: B) Energy is always released

Q17. The shape of carbon tetrachloride molecule is

  1. Apyramidal
  2. Bsquare planar
  3. Ctetrahedral
  4. DDistorted tetrahedral
Show answer & explanation

Answer: C) tetrahedral

Q18. Which of the following compounds does not have hydrogen bonding?

  1. ACH²
  2. BH²O
  3. CNH³
  4. DCH³COOH
Show answer & explanation

Answer: A) CH²

Q19. In which of the following compounds hydrogen bonding is present?

  1. AHF
  2. BHCl
  3. CHBr
  4. DHI
Show answer & explanation

Answer: A) HF

Q20. The molecule with linear structure is

  1. ACO²
  2. BNO²
  3. CSO²
  4. DS¹ O²
Show answer & explanation

Answer: A) CO²

Q21. Hydrogen chloride is a gas, but hydrogen fluoride is a low-volume liquid because

  1. AH-F bond is strong
  2. BThe H-F bond is weak
  3. CDue to hydrogen bonding, molecules get associated.
  4. DHydrogen fluoride is a weak acid
Show answer & explanation

Answer: C) Due to hydrogen bonding, molecules get associated.

Q22. Mark the compound which has covalent and co-ordinate bonds.

  1. AH²O
  2. BNH⁴CI
  3. CSO³
  4. DSO²
Show answer & explanation

Answer: B) NH⁴CI

Q23. The high boiling point of water is due to

  1. AIts higher specific heat
  2. BIts higher dielectric constant
  3. Clow dissociation of water molecules
  4. Dhydrogen bonding in water molecules
Show answer & explanation

Answer: D) hydrogen bonding in water molecules

Q24. Liquid sodium chloride can conduct electric current because it contains

  1. Afree electrons
  2. Bfree ions
  3. Cfree molecules
  4. Dsodium and chlorine atoms
Show answer & explanation

Answer: B) free ions

Q25. An example of a covalent compound is

  1. AKCI
  2. BBaO
  3. CCHCI,
  4. DCaH
Show answer & explanation

Answer: C) CHCI,

12
← Atomic StructureFuel →
💬