Physics
In which of the following processes is energy released ?

Ingestion
Photosynthesis
Respiration
Absorption

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Physics
In a bipolar junction transistor

The collector has the least concentration of impurity
All the three regions (the emitter, the base and the collector) have equal concentrations of impurity
The emitter has the least concentration of impurity
The base has the least concentration of impurity

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Physics
An egg sinks in soft water but floats in a concentrated solution of salt because

Albumin dissolves in salt solution and egg becomes lighter
The density of salt solution exceeds the density of eggs
Egg absorbs salt from the solution and expands
Water has high surface tension

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