With reference to the usefulness of the by-products of sugar industry, which of the following statements is/are correct? 1. Bagasse can be used as biomass fuel for the generation of energy. 2. Molasses can be used as one of the feedstocks for the producti

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Q: 38 (IAS/2013)
With reference to the usefulness of the by-products of sugar industry, which of the following statements is/are correct?
1. Bagasse can be used as biomass fuel for the generation of energy.
2. Molasses can be used as one of the feedstocks for the production of synthetic chemical fertilizers.
3. Molasses can be used for the production of ethanol.

Select the correct answer using the codes given below.

question_subject: 

Science

question_exam: 

IAS

stats: 

0,88,170,8,15,88,147

keywords: 

{'sugar industry': [0, 0, 0, 2], 'biomass fuel': [0, 0, 0, 1], 'molasses': [2, 0, 1, 1], 'production': [16, 4, 20, 51], 'products': [1, 3, 4, 8], 'synthetic chemical fertilizers': [0, 0, 0, 1], 'feedstocks': [0, 0, 0, 1], 'ethanol': [0, 1, 1, 0], 'bagasse': [0, 0, 0, 1], 'usefulness': [0, 0, 0, 1]}

Explanation:

  1. Bagasse, the fibrous residue left after sugarcane crushing, can be used as a renewable energy source for the generation of electricity and heat. It can also be used as a raw material for the production of paper and other products.

  2. Molasses, a by-product of sugar production, is a rich source of fermentable sugars and can be used as a feedstock for the production of ethanol through fermentation. Ethanol produced from molasses is used as a biofuel and as a raw material for the production of chemicals such as acetic acid, acetaldehyde, and ethyl acetate.

  3. Molasses is not used as a feedstock for the production of synthetic chemical fertilizers. Synthetic chemical fertilizers are produced from inorganic sources such as ammonia, urea, and phosphoric acid.

Therefore, the correct answer is option 1 and 3.