1. The headquarters of the Asian Productivity Organization is located in:

• Singapore
• Bangkok
• Seoul
• Tokyo

2. Sperm whales communicate using rhythmic click sequences called:

• Echo pulses
• Codas
• Sonar chants
• Wave calls

3. RAINMUMBAI is based on deviation of rainfall from:

• Seasonal Rainfall Index
• Indian Ocean Dipole Index
• Long Period Average (LPA)
• ENSO Index

4. Ammonium sulphate is preferred in flooded paddy fields because:

• It increases salinity rapidly
• It completely replaces irrigation needs
• It prevents all pest attacks
• Nitrate fertilizers suffer denitrification losses in waterlogged soils

5. Blue Straggler Stars are generally found in:

• Old dense star clusters
• Young stellar nebulae
• Planetary rings
• Intergalactic voids