Advertisements
Advertisements
Question
Explain why:
Rivers and lakes do not freeze easily?
Solution
Large rivers do not freeze "through out" because, Water, ice, and snow are good insulators and poor conductors of heat. The portions of a lake or river that are exposed to the cold winter air will freeze into ice and this ice insulates the water below from further rapid freezing.
APPEARS IN
RELATED QUESTIONS
Give balanced chemical equation for the reaction of water with Sodium oxide.
What are the main causes of water pollution ? How can it be controlled ?
Give reason of Alcohol is mixed with water and is used in car radiator.
Give one word for the following statement:
Water fit for human consumption .
Answer the following question:
Why is acid added to water before electrolysis ?
Give a reason why alcohol and water form a miscible mixture while oil & water do not.
Define ‘eutrophication’.
Condensation results in the formation of dew on grass.
Rivers from land, add minerals to seawater. Discuss how?
A man travelling on a train threw an empty packet of food on the platform. Do you think this is a proper waste disposal method? Elaborate.