1000 questions & answers

How can microorganisms either harm or benefit us?

Describe in detail the different kinds of microorganisms found in our surroundings and their various functions, both beneficial and harmful. Provide examples to illustrate your points.

Explain the role of microorganisms in the food industry, particularly in the preparation of curd, bread and cake. Detail the process involved and the types of microorganisms used.

Discuss how microorganisms are used in the preparation of medicines, particularly antibiotics. Describe the process and the specific types of microorganisms involved.

Explain the role of vaccines in disease prevention. How do they work, and what are some examples of diseases that can be prevented through vaccination?

Discuss how certain microorganisms can improve soil fertility and clean up the environment, giving specific examples and details on how these processes occur.

Describe the harmful effects of microorganisms, detailing the mechanisms through which they spread diseases in humans, animals and plants.

Explain the methods of food preservation commonly used in homes and the science behind their effectiveness. Include the role of microorganisms in food spoilage.

Explore the concept of nitrogen fixation by microorganisms such as Rhizobium. Why is nitrogen fixation important for the environment and how can microorganisms contribute to this process?

Describe in detail the nitrogen cycle, explaining the role of microorganisms in it. Discuss the importance of maintaining a balance in this cycle.

How would the world be different if beneficial microorganisms didn't exist? Discuss the impacts on food production, medicine, and the environment.

A certain type of bacteria is introduced into a closed ecosystem, which then starts to consume a specific nutrient in the soil which plants need to grow. Predict and explain how this might impact the balance of the ecosystem over time.

Considering the increase in diseases caused by mosquito-borne pathogens, propose some innovative strategies that could be used to control the mosquito population and thus reduce the spread of these diseases.

Explain the difference between inexhaustible and exhaustible natural resources with examples. Describe the implications of overusing exhaustible resources.

Describe the process of carbonisation and its role in the formation of coal. How has coal been used historically and in modern times?

Detail the geological process which leads to the formation of petroleum. Why is petroleum often referred to as 'black gold' and what are the various products we derive from this natural resource?

What is the refining process of petroleum? What are some of the substances obtained during this process and what are their uses?

Discuss the environmental impacts of using fossil fuels. What steps can we take to mitigate these impacts and conserve these resources?

Elaborate on the uses of natural gas and why it is classified as a cleaner fuel compared to other fossil fuels. Where are significant reserves of natural gas found in India?

Explain the role of the Petroleum Conservation Research Association (PCRA) in India and the measures they suggest for conserving fuel.