1st Year Chemistry 4th Quarter Book Paper

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

1. Catalyst used in catalytic cracking is generally:
   1. Iron oxide
   2. Nickel
   3. Zeolites
   4. Manganese dioxide
2. The function of Al₂O₃ or concentrated H₂SO₄ is to:
   1. Oxidize alcohols
   2. Form esters
   3. Add hydrogen to double bonds
   4. Remove water from a molecule
3. Which test produces a silver mirror when reacted with an aldehyde?
   1. Fehling's test
   2. Benedict's test
   3. Tollen's test
   4. Iodoform test
4. Amines are derivatives of:
   1. Water
   2. Ammonia
   3. Alcohol
   4. Ether
5. J/L is the unit of :
   1. Energy density
   2. Specific energy density
   3. Energy
   4. Density
6. Retrosynthesis is the process of:
   1. Combining simple reactions to make a compound
   2. Distilling alcohols
   3. Separating organic mixtures
   4. Breaking a target compound into simpler precursors
7. A carboxylic acid contains functional group :
   1. A Hydroxyl group
   2. A Carboxyl group
   3. Hydroxyl and Carboxyl group
   4. A Carboxyl and aldehyde group
8. Catalytic reduction of nitriles uses:
   1. H₂ / Ni
   2. H₂ / Cu
   3. H₂ / Fe
   4. H₂ / MnO₂
9. Photovoltaic cells generate which type of current?
   1. Alternating current
   2. Direct current
   3. Pulsed current
   4. Magnetic current
10. Retrosynthesis works in which direction?
    1. Forward direction
    2. Backward from target to precursor
    3. Random reaction sequence
    4. Simultaneous pathway
11. The reaction of aldehydes and ketones with 2,4-DNP gives:
    1. Yellow precipitate
    2. Blue gas
    3. White fumes
    4. Black residue
12. Which can donate an electron pair?
    1. RX
    2. RCOR
    3. RCHO
    4. $RNH_2$