What is the reason for formation of Mirage in desert?
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The force of friction between two surfaces will increase if:
The given symbol stands for a/an ___ in an electric circuit.
Black soil is also known by which of the following name ?
Based on the common features like presence of notochord and dorsal hollow neural system, animals like fishes, amphibians, reptiles, birds along with mammals are included in which Phylum?
Which of the following physiological symptoms are signs of stress?
Which of the following compounds has a double bond?
___ is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.