State two ways to prevent the rusting of iron.
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Differentiate between metal and non-metal on the basis of their chemical properties.
What will happen if we kill all the organisms in one trophic level?
Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it, as shown in figure below. (a) What will be the action of gas on (i) dry litmus paper? (ii) moist litmus ...Read more
In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?
Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).
If a trait A exists in 10% of a population of an asexually reproducing species and a trait B ists in 60% of the same population, which trait is likely to have arisen earlier?
What type of oxides are formed when non-metals combine with oxygen?