1st Year Chemistry 1st Quarter Book Paper

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

1. The reactant that is completely consumed during a reaction is called:
   1. Non-limiting reactant
   2. Excess reactant
   3. Limiting reactant
   4. Catalyst
2. Which type of bonding involves a "sea of delocalized electrons"?
   1. Covalent
   2. Ionic
   3. Metallic
   4. Hydrogen
3. Born Haber cycle is used to determine lattice energies of _______:
   1. Molecular solids
   2. Ionic solids
   3. Covalent solids
   4. Metallic solids
4. What is correct statement about Al-Ghazali's approach? (i) He thought that every event must have a cause (ii) He thought that there is succession of events, not causation (iii) He thought that God can suspend the habitual continuation of events۔
   1. i & ii only
   2. ii & iii only
   3. iii only
   4. i,ii & iii
5. Semi-conductors possess electrical conductivity:
   1. Equal to metals
   2. Higher than metals
   3. Equal to insulators
   4. Between conductors and insulators
6. Evaporation causes cooling because:
   1. Molecules absorb energy from surroundings
   2. Molecules release heat
   3. Vapour pressure decreases
   4. Surface area increases
7. Which sample produces most hydrogen by reaction with excess of ?
   1. 0.25 mol Ca
   2. 0.25 mol Al
   3. 0.25 mol Zn
   4. 0.25 Na
8. A greater difference in electronegativity between two atoms results in a bond that is:
   1. More covalent
   2. Nonpolar
   3. Less ionic
   4. More polar
9. The heat of neutralization between NaOH and HCl is approximately:
   1. +58.0 kJ/mol
   2. -58.0 kJ/mol
   3. +57.4 kJ/mol
   4. -57.4 kJ/mol
10. The Greek word "atomos" means:
    1. Divisible
    2. Smooth
    3. Breakable
    4. Indivisible
11. The element magnesium belongs to which group based on successive ionization energies?
    1. Group 1
    2. Group 2
    3. Group 3
    4. Group 7
12. Cleavage planes are a property of:
    1. Amorphous solids
    2. Gases
    3. Liquids
    4. Crystalline solids