If one mixes up ashes with animal fat, the substance received in the crude form is called

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Q: 85 (NDA-II/2016)
If one mixes up ashes with animal fat, the substance received in the crude form is called

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,16,25,18,18,1,4

keywords: 

{'cement': [0, 0, 1, 4], 'concrete': [0, 0, 0, 2], 'ashes': [0, 0, 0, 1], 'substance': [2, 1, 7, 7], 'animal fat': [0, 0, 0, 1], 'soap': [0, 0, 0, 3], 'pheromone': [0, 0, 0, 1], 'crude form': [0, 1, 0, 1]}

Option 1: Pheromone - Pheromone is a chemical substance produced by animals to communicate with others of the same species. It is not related to mixing ashes with animal fat, so this option can be eliminated.

Option 2: Soap - When ashes are mixed with animal fat, the substance formed is called soap. Soap is a natural or synthetic substance that is used for cleaning purposes. When fat, which contains fatty acids, reacts with the alkaline substances found in ashes, a chemical reaction called saponification occurs. This reaction converts the fat and ashes into soap. Therefore, option 2 is the correct choice.

Option 3: Cement - Cement is a fine powder used in construction to bind materials such as aggregate together. It is not related to the mixing of ashes with animal fat, so this option can be eliminated.

Option 4: Concrete - Concrete is a mixture of cement, sand, aggregate, and water. It is used in construction as a strong and durable material. It is not related to the mixing of ashes with animal fat, so this option can be eliminated.

In conclusion, when one mixes up ashes with animal fat, the substance received in the crude form is called soap.