Chemistry
Which one of the following is not a characteristic feature of alloys? They are

Homogeneous systems
Solutions
Mixtures
Compounds

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Chemistry
The open "Sigrees" or coal stoves often require fanning to sustain burning because of

Tendency of carbon dioxide to form a layer along with dust smoke
Interrupted release of moisture from the material
Lack of oxygen in the surroundings of sigrees
Accumulation of smoke and dust over the sigrees

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