What is an oxidation number ? The oxidation number of an atom in a molecule of an element is considered as zero . why?
poojabiju909
Asked:
December 2022
what are the positive catalysts and negative catalysts? Give example.
poojabiju909
Asked:
December 2022
A burning match stick is shown to a jar containing hydrogen and another jar containing oxygen. What change is there in your observations? Ans: When a burning match stick is shown to hydrogen gas, the gas burns with a pop sound. If the burning stick is shown to oxygen gas,...
poojabiju909
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December 2022
A disturbance on the surface of water cannot move a paper boat from the shore towards the middle of the pond . Explain why? Ans. The waves formed on the surface of water are transverse waves. The particle of water on the surface only make up and down motion. They...
poojabiju909
Asked:
December 2022
Leonardo DiCaprio in his famous speech at the UN Climate Summit stressed the need to take immediate steps to solve the crisis.Prepare a write up on the causes and consequences of climate change. Causes and Consequences of Climate Change
poojabiju909
Asked:
December 2022
The siachin glaciers is one of the strategic centres of the Indian Warfront. What are glaciers? How do they form erosional landforms?Explain.