0Question:
Even though plastics are very useful, they are not environment friendly.” Justify the statement
Answer:
Plastics are very useful, but their disposal is a big problem. Plastics are non-biodegradable and take many years to decompose. They release a lot of poisonous fumes, when burnt so they cause environmental pollution.
Question:
What is the difference between current flowing through metals and current flowing through liquids?
Answer:
In metals electric current is conducted by flow of electrons. In liquids, the movement of charged particles (ions) carry current from anode to cathode terminals. Electrolytes conduct
current at a slow rate than metals.
