Vanilla essence can be used as an acid base indicator by visually impaired students as it is an olfactory indicator whose smell changes in acidic or basic media.

(i)it is an endothermic reaction (ii) it is an exothermic reaction (iii) the pH of the resulting solution will be more than 7 (iv) the pH of the resulting solution will be less than 7

Yeast is added to sugar solution, it undergoes a fermentation which is anaerobic respiration as it takes place in the absence of oxygen. In this process, the pyruvate is converted into ethanol and carbon dioxide (C₂H₅OH + CO₂).

Sodium is so soft that can be cut using a knife. It reacts with oxygen or moisture present in air readily and reacts with water vigorously. Because of this sodium is stored in kerosene oil to prevent any reaction or ...

Firstly, it performs two functions: (1) makes the food alkaline and (2) breaks the fats present in food into small globules by the process of emulsification. Bile stored in the gall bladder but it is secreted by the liver and ...