Water: The Essence of Life and Journey of Rivers
Most Imp Questions for JNVS 2027
1. Which of the following is considered one of the largest freshwater lakes in Asia?
A) Luni Lake B) Wular Lake C) Rann of Kutch D) Hiware Lake
2. Where is India's first water museum, the Jal Shakti Museum, located?
A) Gujarat B) Rajasthan C) New Delhi D) Maharashtra
3. What is the height of the Statue of Unity, the world's tallest statue?
A) 150 metres B) 182 metres C) 200 metres D) 250 metres
4. In which state are vast salt pans located where seawater is naturally dried to collect salt?
A) Maharashtra B) Jammu and Kashmir C) Gujarat D) Kerala
5. Which animal, found in India's wetlands, has partially webbed paws that make it an excellent swimmer?
A) Pond Heron B) Freshwater Turtle C) Fishing Cat D) Water Scorpion
6. What physical adaptation do water scorpions use to breathe underwater?
A) Gills B) Webbed paws C) A specialized tail tube D) Waxy skin
7. Which of the following is an example of a free-floating aquatic plant?
A) Lotus B) Water Lily C) Reeds D) Water Hyacinth
8. Which major Indian river uniquely does not drain into a sea?
A) Luni B) Ganga C) Godavari D) Brahmaputra
9. In what form does water exist when it is heated and turns into steam?
A) Solid B) Liquid C) Vapour D) Ice
10. Which village in Maharashtra is celebrated as a successful "water-positive" village?
A) Hiware Bazar B) Rann of Kutch C) Jal Shakti D) Wular
11. According to textbook estimates, if all the water on Earth were placed in a glass, how much would represent usable freshwater?
A) Half the glass B) Two tablespoons C) One teaspoon D) A single drop
12. How do cemented surfaces and paved areas in modern cities affect the natural water cycle?
A) They increase the rate of evaporation
B) They stop groundwater from easily recharging by preventing seepage.
C) They filter rainwater before it reaches the ground.
D) They create natural soak pits.
13. Which of the following pairs represents rooted floating plants?
A) Water Hyacinth and Reeds B) Lotus and Water Lily
C) Reeds and Lotus D) Water Hyacinth and Water Lily
14. What is the primary function of the waxy coating on the leaves of aquatic plants?
A) To attract insects for pollination.
B) To absorb more sunlight underwater.
C) To make them waterproof and prevent damage from too much water entering the plant.
D) To provide food for aquatic animals.
15. How does the Pond Heron adapt to its wetland environment to catch fish?
A) It dives deep underwater using webbed feet.
B) It has long, pointed legs that allow it to stand entirely still in the water.
C) It swims extremely fast using fins.
D) It breathes using a specialized tail tube.
16. During the water cycle, what is the primary cause that turns water from oceans and rivers into water vapour?
A) Underground heat
B) Cooling clouds
C) The Sun's heat
D) Flowing river currents
17. What vital ecological role does Wular Lake play in its surrounding environment?
A) It increases salt production for local communities.
B) It acts as a primary source for the Luni River.
C) It helps regulate river flow to prevent floods.
D) It collects all rainwater from the Arabian Sea.
18. Which wetland insect flies fast, eats mosquitoes, and lays its eggs near water?
A) Water Scorpion B) Fishing Cat C) Dragonfly D) Freshwater Turtle
19. What happens to the Luni River at the end of its journey?
A) It joins the Godavari river. B) It drains into the Bay of Bengal.
C) It ends in the marshy lands of the Rann of Kutch. D) It flows directly into the Arabian Sea.
20. Which of the following is NOT a helpful method for groundwater recharge?
A) Building soak pits B) Creating human-made lakes
C) Constructing concrete roads D) Planting more trees
21. Consider the following statements regarding the Luni River:
- It originates in the Aravalli Range in Rajasthan.
- It is a major Indian river that drains directly into the Arabian Sea. Which of the statements given above is/are correct?
22. Consider the following statements about India's water conservation and heritage:
- Hiware Bazar in Maharashtra achieved a water-positive status through rainwater harvesting and watershed management.
- The Jal Shakti Museum, India's first water museum, is located in Gujarat.
23. Match List-I (Aquatic Animal) with List-II (Unique Adaptation):
List-I: A. Fishing Cat B. Water Scorpion C. Pond Heron
List-II:
- Breathes using a tail tube
- Partially webbed paws for diving
- Long legs for standing still
24. Consider the following statements regarding aquatic plants:
- Water Hyacinth is considered an edge plant that grows tall and grass-like.
- Lotus plants have roots that stay in the pond bed while their leaves and flowers float.
- Aquatic plants naturally develop a waxy coating to prevent excess water from entering and damaging the plant.
25.
Assertion (A): The groundwater level in heavily cemented modern cities is often difficult to recharge.
Reason (R): Concrete and paved areas allow rainwater to seep directly into underground aquifers much faster than soil.
Select the correct answer from the codes given below:
A) Both A and R are true, and R is the correct explanation of A.
B) Both A and R are true, but R is not the correct explanation of A.
C) A is true, but R is false.
D) A is false, but R is true.
26. With reference to the distribution of water on Earth, consider the following statements:
- The vast majority of water covering the Earth's surface is salty.
- All living beings, including humans, plants, and animals, depend heavily on the small fraction of available freshwater to survive.
27. Match List-I (Water Feature / Body) with List-II (State / Union Territory):
List-I: A. Wular Lake B. Vast Salt Pans C. Luni River (Origin)
List-II:
- Gujarat
- Rajasthan
- Jammu & Kashmir
A) A-3, B-1, C-2 B) A-3, B-2, C-1 C) A-1, B-3, C-2 D) A-2, B-1, C-3
28. Consider the following statements about the water cycle:
- The sun's heat continuously causes water from oceans and rivers to turn into water vapour.
- Water vapour cools to form clouds, which then return water to the Earth solely as liquid rain.
A) 1 only B) 2 only C) Both 1 and 2 D) Neither 1 nor 2
29. Which of the following practices actively contributes to effective groundwater recharge?
- Creating soak pits
- Building human-made lakes
- Constructing concrete lawns
- Planting more trees
30.
Assertion (A): Rivers naturally change the shape of land formations in their path over time.
Reason (R): Water flows, stops, or curves according to the shape of the land formations in its path, gradually altering the terrain.
Select the correct answer from the codes given below:
A) Both A and R are true, and R is the correct explanation of A.
B) Both A and R are true, but R is not the correct explanation of A.
C) A is true, but R is false.
D) A is false, but R is true.
Answer Key & Explanations
Section 1: Level 1
- B - Wular Lake in Jammu and Kashmir is one of the largest freshwater lakes in Asia.
- C - India's first water museum, the Jal Shakti Museum, is located in New Delhi.
- B - The Statue of Unity in India stands exactly 182 metres tall.
- C - The salt pans of Gujarat are flatlands where seawater dries to collect salt.
- C - The Fishing Cat has partially webbed paws, making it an excellent swimmer that dives for fish.
- C - The water scorpion breathes underwater using a specialized tail tube.
- D - Water hyacinth is a fast-growing, free-floating plant.
- A - The Luni River uniquely ends in the marshy lands of the Rann of Kutch instead of draining into the sea.
- C - Vapour is the form water takes when it turns into steam.
- A - Hiware Bazar in Maharashtra is recognized for being a successful water-positive village.
11. C - If all water on Earth were in a glass, the usable freshwater would amount to only a teaspoon.
12. B - Cemented surfaces stop rainwater from easily sinking into the soil, halting natural groundwater recharge.
13. B - Lotus and Water Lily have roots in the pond bed while their leaves float, making them rooted floating plants.
14. C - The waxy coating makes aquatic plant leaves waterproof, keeping too much water from getting inside and damaging the plant.
15. B - The Pond Heron utilizes its long legs to stand completely still to catch fish.
16. C - The Sun's heat evaporates water from oceans and rivers into water vapour during the cycle.
17. C - Wular Lake helps regulate river flow, which serves to prevent devastating floods.
18. C - Dragonflies are known to fly fast, eat mosquitoes, and lay eggs near water.
19. C - It ends in the marshy lands of the Rann of Kutch.
20. C - Constructing concrete roads prevents rainwater from seeping into the ground, thus hindering recharge.
21. A - Statement 1 is correct. Statement 2 is incorrect because the Luni River does not drain into the Arabian Sea; it ends in the marshy lands of the Rann of Kutch.
22. A - Statement 1 is correct. Statement 2 is incorrect because the Jal Shakti Museum is located in New Delhi, not Gujarat.
23. A - The Fishing Cat has partially webbed paws for diving (A-2); the Water Scorpion breathes using a tail tube (B-1); the Pond heron has long legs to stand still (C-3).
24. B - Statements 2 and 3 are correct. Statement 1 is incorrect because Water Hyacinth is a free-floating plant, whereas "reeds" are the edge plants that grow tall and grass-like.
25. C - Assertion (A) is true as cemented cities struggle with groundwater recharge. Reason (R) is false because concrete and paved surfaces prevent rainwater from seeping into aquifers, rather than accelerating it.
26. C - Both statements 1 and 2 are fundamentally true. The vast majority of the Earth's surface water is salty, and a tiny fraction supports all life.
27. A - Wular Lake is in Jammu & Kashmir (A-3), the Salt Pans are in Gujarat (B-1), and the Luni River originates in the Aravalli Range in Rajasthan (C-2).
28. A - Statement 1 is correct. Statement 2 is incorrect because water vapour cools into clouds and returns to earth as rain, snow, OR hail, not solely liquid rain.
29. B - Options 1, 2, and 4 (soak pits, lakes, and trees) actively contribute to groundwater recharge. Concrete lawns (Option 3) halt groundwater recharge.
30. A - Both the Assertion and Reason are true, and the Reason correctly explains the Assertion. Water continuously curves and flows based on the landforms in its path, and this sustained flow will actively alter the shape of the terrain over time.
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