Which of the following statements is incorrect regarding wine?

Polluted water can be purified by using</h2></div>

What are the dragonflies use to get rid of?

Write the scientific name of microbe used for fermenting malted cereals and fruit juices.</h2></div>

What does gobar gas produced from animal and plant waste contain?</h2></div>

Identify the correct sequence of steps involved in the treatment of sewage.<br> (i)   Growth of …

What is the role of micro-organism in increasing the fertility of the soil?<br> </h2></div>

Fertility of paddy fields is improved by addition of</h2></div>