2nd Year Chemistry Chapter 22 Test22. Agriculture

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Fertilizers increase the natural fertility of the soil or:
   1. Replace lost water
   2. Add pesticides
   3. Increase soil acidity
   4. Replace elements
2. Which genetically modified crop is resistant to papaya ringspot virus?
   1. Bt corn
   2. Rainbow papaya
   3. Golden rice
   4. Cotton
3. Glyphosate kills plants by:
   1. Blocking photosynthesis
   2. Destroying roots
   3. Reducing nitrogen fixation
   4. Inhibiting protein production
4. Drought conditions can lead to:
   1. Moisture stress and reduced crop yields
   2. Increased soil fertility
   3. Enhanced root growth
   4. Faster crop maturity
5. Runoff water containing pesticides can:
   1. Increase soil fertility
   2. Improve biodiversity
   3. Benefit aquatic organisms
   4. Contaminate water sources
6. Acid rain is caused mainly by air pollution from:
   1. Sulphur oxides and nitrogen oxides
   2. Carbon monoxide and methane
   3. Oxygen and hydrogen oxides
   4. Carbon dioxide only
7. Genetic engineering is applied in agriculture to:
   1. Increase crop yield
   2. Develop resistance to pests and diseases
   3. Tolerate stresses like drought and salinity
   4. All of the above
8. Copper-based fungicides act by:
   1. Inhibiting vitamin K
   2. Interrupting cellular processes
   3. Destroying chlorophyll
   4. Stimulating seed production
9. Polyvinyl chloride (PVC) is a polymer:
   1. Addition
   2. Substitution
   3. Reduction
   4. Condensation
10. Crop failures due to climate change can lead to:
    1. Increased food security
    2. Food shortages and price spikes
    3. Higher crop yields
    4. Reduced food storage problems