Question
Which of the following statements about holes is
incorrect ?Solution
In semiconductors, a hole is the absence of an electron in the valence band and acts as a positive charge carrier . When an electron gets excited to the conduction band, it leaves behind a hole. While both electrons and holes contribute to conduction, they move differently and do not have the same mobility . Electrons generally have higher mobility than holes due to their lower effective mass and freer movement in the conduction band.
Which of the following is NOT a principle of organic farming as per IFOAM?
Which WTO agreement addresses the protection of human, animal, and plant health?
Which Indian organization helps exporters meet international food trade requirements and offers infrastructure support?
What is the key environmental benefit of organic farming?
A system in which forest trees are grown along with agricultural crops and grasses on the same land at the same time is known as ____
What is the full form of SPS in WTO agreements related to agri trade?
Which of the following is a dicotyledonous weed?
What is the main economic advantage of organic farming for smallholders?
Which Ministry governs the functioning of APEDA?
What does the conversion period in organic farming refer to?
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