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- 1. Multiple Choice
A compound is formed when element Y reacts with element Z. Which of the following is the correct physical property of the compound. (SBP 2020, Q21)
Highly volatile
high melting point
exist as liquid at room temperature
does not conduct electricity
- 2. Multiple Choice
Which of the following statements is correct about J and W
The electron arrangement of atom J is 2.6 while atom W is 2.8.1
Atom J has one valence electron while atom W has six valence electrons
Atom J accepts one electron while atom W releases two electrons during formation of bond
atom J contributes two electrons and atom W contributes one electron to form the compound
- 3. Multiple Choice
Which statement about the bonding in carbon dioxide molecule is not correct? [Proton number: C = 6, O = 8] (SPMRSM 2020, Q24)
Both carbon and oxygen atoms have achieved stable octet electron arrangement
Carbon atom shares its four electrons with one oxygen atom
Each oxygen atom shares two electrons with one carbon atom
Two double covalent bonds are formed
- 4. Multiple Choice
Which compound is formed by transferring electrons? (SPMRSM 2020, Q21)
Ammonia
Lithium oxide
Carbon monoxide
Hydrogen chloride
- 5. Multiple Choice
Which of the following are incorrect about the water molecule? (Melaka 2020, Q43)
Each hydrogen atom donates one valence electron.
Oxygen atom share two electrons with two hydrogen atoms
One single covalent bond is formed in the molecule.
Hydrogen atoms and oxygen atom achieved a stable octet electron arrangement.
- 6. Multiple Choice
Which pair is matched correctly? (Kelantan 2020, Q6)
Magnesium oxide, MgO. Covalent
Lithium chloride, LiCl. Ionic
Sodium chloride, NaCl. Covalent
Butane, C4H10. Ionic
- 7. Multiple Choice
Which of the following statements is (are) true about metallic bond?
the bond is formed between an electropositive element and an electronegative atom
the strength of the bond increases with the atomic size of the metal
the valence electron can move freely throughout the metallic lattice
- 8. Multiple Choice
Which of the following substances have dative bonds?
NH+4
H2O
H3O+
CO2
- 9. Multiple Choice
Ethanol, C2H5OH is soluble in water due to the formation of
dative bond
metallic bond
hydrogen bond
covalent bond
- 10. Multiple Choice
Which of the following statements is true about the giant covalent molecule?
Very large structure, usually exists as solids, liquids and gases
Van der Waals attraction forces between molecules are weak
High melting and boiling point
Weak covalent bond
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