Question

Q.3] Name the following.
1) One low-cost sewage treatment system.
2) carnivores that eat dead bodies of other animals
3) If a gas is produced in a reaction, what kind of a change is it?
4) The soil that holds least amount of water.
5) An alloy of copper, nickel and chromium.
6) Device used to remove sludge.
7) Any two alternative methods of sewage disposal.
8) Two examples of insulators.
9) Types of reflection
10) Types of lens.​

Answer 1

Answer:

• One low-cost sewage treatment system :- Septic Tanks.

• Carnivores that eat dead bodies of other animals :- Scavengers

• If a gas is Produced in a reaction, what kind of a change it is? :- Chemical Changes

• The soil that holds least amount of water :- Sandy Soil

• An alloy of Copper, Nickel and Chromium :- CuNi

• Device used to remove sludge :- Clarifiers

• Any two alternative methods of sewage disposal :- Septic tanks and Chemical toilets

• Two example of insulators :- Plastics, Glass

• Type of Reflection :- Regular reflection, diffuse reflection.

• Types of Lens :- Concave lens and Convex Lens