Chapter Exam

Chapter-7 Hydrologic Cycle — Online MCQ Test

Q: Which process changes water from liquid form into water vapour?

Answer: B. Evaporation — Evaporation is the process in which water changes into water vapour due to heat from the Sun.

Q: Water vapour in the atmosphere turns into tiny water droplets by which process?

Answer: C. Condensation — Condensation is the cooling of water vapour to form tiny droplets, which later may form clouds.

Q: What is infiltration?

Answer: C. Seeping of water into the soil — Infiltration is the process in which rainwater enters and moves down into the soil.

Q: Which statement best explains why lakes and oceans are important in the hydrologic cycle?

Answer: B. They are major sources of water for evaporation — Large water bodies supply water for evaporation, which starts the movement of water in the cycle.

Q: Which option correctly fills the blank: Water vapour cools and forms clouds by ________.

Answer: B. condensation — When water vapour cools, it changes into tiny droplets through condensation, forming clouds.

SOCIAL · Samacheer Kalvi 8th · Tamil Nadu State Board

Practice Chapter-7 Hydrologic Cycle with a free chapter-wise online MCQ test for Tamil Nadu State Board Samacheer Kalvi 8th SOCIAL. This chapter covers: Evaporation Transpiration Infiltration Runoff Precipitation Explains the continuous movement of water through the hydrologic cycle. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter-7 Hydrologic Cycle — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board Samacheer Kalvi 8th SOCIAL — Chapter-7 Hydrologic Cycle, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which process changes water from liquid form into water vapour?

A. Condensation
B. Evaporation ✓
C. Precipitation
D. Runoff

Answer: B. Evaporation
Evaporation is the process in which water changes into water vapour due to heat from the Sun.

Water vapour in the atmosphere turns into tiny water droplets by which process?

A. Infiltration
B. Transpiration
C. Condensation ✓
D. Runoff

Answer: C. Condensation
Condensation is the cooling of water vapour to form tiny droplets, which later may form clouds.

What is infiltration?

A. Movement of water from rivers to the sea
B. Water vapour changing into clouds
C. Seeping of water into the soil ✓
D. Falling of rain from clouds

Answer: C. Seeping of water into the soil
Infiltration is the process in which rainwater enters and moves down into the soil.

Which statement best explains why lakes and oceans are important in the hydrologic cycle?

A. They stop evaporation completely
B. They are major sources of water for evaporation ✓
C. They prevent condensation from happening
D. They produce clouds directly

Answer: B. They are major sources of water for evaporation
Large water bodies supply water for evaporation, which starts the movement of water in the cycle.

Which option correctly fills the blank: Water vapour cools and forms clouds by ________.