Conservation & Rainwater Harvesting — Homi Bhabha Class 6 Chemistry MCQs with Solutions
Free Homi Bhabha Class 6 Chemistry Conservation & Rainwater Harvesting MCQs with step-by-step solutions (10 questions). Part of Water & Its Management. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Conservation & Rainwater Harvesting · easy · theory
Collecting rainwater from rooftops and storing it for later use is called …
A. Filtration
B. Water pollution
C. Rainwater harvesting ✓ Correct
D. Evaporation
Solution: Catching the rain that falls on roofs and saving it in tanks or letting it soak into the ground is called rainwater harvesting.
Q2 — Conservation & Rainwater Harvesting · easy · theory
Which habit saves water while you brush your teeth?
A. Using two taps at once
B. Turning off the tap while brushing ✓ Correct
C. Brushing under a shower
D. Leaving the tap running the whole time
Solution: Keeping the tap off while brushing and only opening it when needed saves many litres of water each day.
Q3 — Conservation & Rainwater Harvesting · easy · theory
What should you do with a tap that keeps dripping?
A. Leave it dripping, it is only a little
B. Open it fully so it stops
C. Cover it with a cloth
D. Repair it quickly to stop the waste ✓ Correct
Solution: Even a slow drip wastes a lot of water over time, so a leaking tap should be repaired as soon as possible.
Q4 — Conservation & Rainwater Harvesting · easy · theory
Watering plants slowly, drop by drop, right near their roots is called …
A. Rain harvesting
B. Drip irrigation ✓ Correct
C. Flood irrigation
D. Sprinkling from far
Solution: Drip irrigation gives water drop by drop directly to the roots, so very little water is wasted.
Q5 — Conservation & Rainwater Harvesting · medium · theory
Rainwater harvesting is useful partly because it helps refill the water stored under the ground, called …
A. Boiled water
B. Cloud water
C. Groundwater ✓ Correct
D. Sea water
Solution: When harvested rainwater soaks into the soil, it adds to the underground water called groundwater, which we use through wells and borewells.
Q6 — Conservation & Rainwater Harvesting · medium · numerical
A leaking tap wastes about 2 litres of water every hour. How much water does it waste in 24 hours?
A. 48 litres ✓ Correct
B. 26 litres
C. 12 litres
D. 24 litres
Solution: Multiply the waste per hour by the number of hours: 2 × 24 = 48 litres.
Q7 — Conservation & Rainwater Harvesting · medium · theory
Which of these is a good way to REUSE water at home?
A. Using the water that washed vegetables to water plants ✓ Correct
B. Leaving the shower running while soaping
C. Throwing away every drop after one use
D. Washing the car with a running hose
Solution: Water used to wash vegetables is clean enough to water plants, so reusing it saves fresh water.
Q8 — Conservation & Rainwater Harvesting · medium · theory
To lose less water to evaporation, a garden is best watered …
A. Early in the morning or in the evening ✓ Correct
B. At noon in bright sunshine
C. When it is hottest
D. Only on very sunny afternoons
Solution: In the cool morning or evening the Sun is weak, so less water evaporates and more soaks in to reach the plants.
Q9 — Conservation & Rainwater Harvesting · hard · theory
How does rainwater harvesting help a village during a dry summer with no rain?
A. It stops water from ever evaporating
B. It turns sea water into fresh water
C. The rainwater stored or soaked into the ground can be used when there is no rain ✓ Correct
D. It makes the Sun produce more rain in summer
Solution: Rainwater collected during the rainy season is stored or added to the groundwater. This saved water can then be used later when rain is not falling.
Q10 — Conservation & Rainwater Harvesting · hard · numerical
A rooftop harvesting system collects about 100 litres of rainwater each time it rains. How much is collected after 6 rains?
A. 6000 litres
B. 600 litres ✓ Correct
C. 106 litres
D. 60 litres
Solution: Multiply the amount per rain by the number of rains: 100 × 6 = 600 litres.