Advertisements
Advertisements
प्रश्न
Give reasons.
Bread 'rises' during baking.
Advertisements
उत्तर
Bread rises during baking primarily because yeast fermentation produces carbon dioxide gas, which gets trapped within the dough, causing it to expand. This process, along with the development of gluten from flour proteins, gives bread its characteristic texture and structure.
संबंधित प्रश्न
The following is an antibiotic.
What are antibiotics?
What is role of microbes in compost production?
a) What is clean technology ?
b) Why is it essential to ban plastic bags?
Find an odd one out.
Biodegradable plastic used for storing the garbage.
Which chemical substances get mixed with the soil by adding chemical pesticides and insecticides in the agricultural industry?
Briefly explain the environmental role of microorganisms in pollution control?
Complete the paragraph by selecting the appropriate option in parentheses.
(energy, microbial, erosion-proof, reused, purification, environmentally friendly)
Nowadays, instead of chemical catalysts, _______ enzymes are used in the chemical industry. These enzymes are active at low temperature, pH and pressure; due to which _______ is saved and _______ instruments are also not necessary. Enzymes carry out specific processes; hence unnecessary by-products are not formed due to which expenses on _______ are minimised. In case of microbial enzymatic reactions elimination and decomposition of waste material is avoided and enzymes can be _______ Hence, such enzymes are _______.
Read the following paragraph and write the answers to the questions asked.
Sulphuric acid is present in the acid rain and materials coming out of mines. You know that erosion of metals present in statues, bridges and buildings occurs due to it. Sulphuric acid is a source of energy for some species of bacteria like Acidiphilium spp. and Acidithiobacillus ferrooxidans. Hence, these bacteria can control the soil pollution occurring due to acid rain. Water soluble salts of uranium are present in the wastes produced during electroplating and in effluent released in the environment from the atomic energy plant. Geobacter convert these salts of uranium into insoluble salts and thereby prevent those salts from mixing with groundwater sources.
- What causes metal erosion in statues, bridges and buildings?
- Sulphuric acid is the source of energy for which bacteria?
- What kind of pollution do these bacteria control?
- What are the water soluble salts in atomic energy plants and in the process of electroplating?
- Which bacteria prevent these salts from mixing with ground water by converting them Into insoluble salts?
