What measure would you take to prevent water-born diseases?

What measures would you take to reduce air pollution?

What safety measures should we take to prevent damage caused by lighting?

If your family owned a dairy farm, what measures would you undertake to improve the quality and quantity of milk production.

Discuss any three measures for prevention of water borne diseases.

A voltemeter reads up to 3 V. It resistance is 200 ohm. It is to be used to measure a potential difference, which may be as large as 60 V. What measures you would take to protect the voltmeter?