Composting

Q. State the scientific and eco-friendly methods of waste management. [Textbook question 3b pg no. 107]

Q.

Which one of the following is not a method of disposal of garbage?

1. Composting

2. Vermicomposting

3. Cycling

4. Landfill

Q.

Provide a suitable term that expresses the meaning of each of the following statements. (a) Greeting cards made from newspaper. (b) Contents of the waste bins. (c) Worms convert certain kinds of waste into manure. (d) An area where a lot of garbage is collected, spread out, and covered with soil.

Q.

The decay of organic wastes which can be utilized to fertilize agricultural land is called as___.

Q.

Briefly describe the mechanism of garbage management.

Q.

Cow dung is added in the composting pit to

1. Give a proper texture to the compost

2. Act as a source of micro-organisms

3. Give compost proper weight

4. Keep away people and animals from it.

Q.

The best way of treating kitchen waste is

1. Incineration

2. Reusing

3. Composting

4. Disposal

Q.

Rag pickers remove-

1. Plastic, polythene and paper waste

2. Rags, cardboard, glass article

3. Both (A) and (B)

4. Food particles

Q.

Which of the following set of wastes can be used to set up compost?

1. Plastic cups, glass bottles, discarded batteries

2. Discarded plastic mug, vegetable peels, metal cans

3. Cow dung, coconut thresh, vegetable peels

4. Cow dung, used tea leaves, discarded batteries

Q. is the act of allowing organic waste to decay so it can be used to fertilise agricultural land.

1. Dumping
2. Incineration
3. Composting

Q. what is role of microbes in compost production

Q.

During composting, the pit is filled with

1. Refuse

2. Mud

3. Cow dung

4. Plastic particles

Q. is the act of allowing organic waste to decay so it can be used to fertilise agricultural land.

1. Dumping
2. Incineration
3. Composting

Q. State the scientific and eco-friendly methods of waste management. [Textbook question 3b pg no. 107]

Q.

In the picture below, what should be the nature of the product to enhance the efficiency of the process in step 5?

1. Completely synthetic

2. Products with carbon as major constituent

3. Synthetic polymer

4. Both A and B

Q. A fungus that can be used in treating pollution with arsenic is:

1. Rhizobium
2. Yarrowia lipolytica
3. Alcanivorax
4. Saccharomyces cerevisiae

Q.

1. Name the technique which is commonly used to remove bulk wastes.
2. Why was the use of ‘kulhads’ (disposable cups made of clay) at a mass scale in the railways discouraged?
3. Name any two solid wastes which can be recycled.

Q.

What is compost and of which nutrient is it rich in?

Q.

Which of the following methods is not appropriate for the disposal of vegetable peels?

1. Dumping in landfills

2. Incineration

3. Composting

4. Disposal in garbage bin

Q. Identify 'X', 'Y' and 'Z'.

'X' is a waste which needs to be handled carefully, otherwise it can lead to spread of diseases.

'Y' is a polymer which is widely used and is light in weight. It is a major cause of pollution.

'Z' is a technique used by earthworms to decompose organic matter.