PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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4. State true or false. If false, correct the statement I

1. Sewage should be treated well before being discharged it into water bodies.

It is not necessory to treat sewage before being dumped into water bodies.
Sewage should be thoroughly treated before being dumped into water bodies.

2. Sea water is suitable for irrigation as it contains dissolved salts.

Sea water is not suitable for irrigation as it has high salinity.
Sea water is suitable for irrigation as it contains dissolved salts.

3. Excessive use of chemical fertilizers depletes the soil and causes water pollution.

Excessive use of chemical fertilizers depletes the soil but does not cause water pollution.
The excess of chemical fertilisers depletes the soil and pollutes the water.

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