Science & Technology UPSC PYQ 2022

Consider the following statements in respect of probiotics: 1. Probiotics are made of both bacteria and yeast. 2. The organisms in probiotics are found in foods we ingest but they do not naturally occur in our gut. 3. Probiotics help in the digestion of milk sugars. Which of the statements given above is/are correct?

Consider the following statements: 1. Biofilms can form on medical implants within human tissues. 2. Biofilms can form on food and food processing surfaces. 3. Biofilms can exhibit antibiotic resistance. Which of the statements given above are correct?

Consider the following statements: 1. Other than those made by humans, nanoparticles do not exist in nature. 2. Nanoparticles of some metallic oxides are used in the manufacture of some cosmetics. 3. Nanoparticles of some commercial products which enter the environment are unsafe for humans. Which of the statements given above is/are correct?

Consider the following :1. Aarogya Setu2. CoWIN3. DigiLocker4. DIKSHAWhich of the above are built on top of open-source digital platforms?

With reference to Web 3.0, consider the following statements: 1. Web 3.0 technology enables people to control their own data. 2. In Web 3.0 world, there can be blockchain based social networks. 3. Web 3.0 is operated by users collectively rather than a corporation. Which of the statements given above are correct?

Consider the following statements in respect of probiotics: [2022] 1. Probiotics are made of both bacteria and yeast. 2. The organisms in probiotics are found in foods we ingest but they do not naturally occur in our gut. 3. Probiotics help in the digestion of milk sugars. Which of the statements given above is/are correct?

If a major solar storm (solar‑flare) reaches the Earth, which of the following are the possible effects on the Earth? [2022] 1. GPS and navigation systems could fail. 2. Tsunamis could occur at equatorial regions. 3. Power grids could be damaged. 4. Intense auroras could occur over much of the Earth. 5. Forest fires could take place over much of the planet. 6. Orbits of the satellites could be disturbed. 7. Shortwave radio communication of the aircraft flying over polar regions could be interrupted.

Consider the following communication technologies: 1. Closed-circuit Television 2. Radio Frequency Identification 3. Wireless Local Area Network Which of the above are considered Short-Range devices/technologies?

Which one of the following statements best reflects the idea behind the “Fractional Orbital Bombardment System” often talked about in the media? [2022]

With reference to Non-Fungible Tokens (NFTs), consider the following statements: 1. They enable the digital representation of physical assets. 2. They are unique cryptographic tokens that exist on a blockchain. 3. They can be traded or exchanged at equivalency and therefore can be used as a medium of commercial transactions. Which of the statements given above are correct?

With reference to polyethylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements: 1. Its fibres can be blended with wool and cotton fibres to reinforce their properties. 2. Containers made of it can be used to store any alcoholic beverage. 3. Bottles made of it can be recycled into other products. 4. Articles made of it can be easily disposed of by incineration without causing greenhouse gas emissions. Which of the statements given above are correct?

Certain species of which one of the following organisms are well known as cultivators of fungi?

Consider the following statements: DNA Barcoding can be a tool to: 1. assess the age of a plant or animal. 2. distinguish among species that look alike. 3. identify undesirable animal or plant materials in processed foods. Which of the statements given above is/are correct?

Which one of the following is the context in which the term "qubit" is mentioned ?

Consider the following: 1. Aarogya Setu 2. CoWIN 3. DigiLocker 4. DIKSHA Which of the above are built on top of open-source digital platforms?

With reference to "Software as a Service (SaaS)", consider the following statements: 1. SaaS buyers can customise the user interface and can change data fields. 2. SaaS users can access their data through their mobile devices. 3. Outlook, Hotmail and Yahoo! Mail are forms of SaaS. Which of the statements given above are correct?

Which one of the following statements best reflects the idea behind the "Fractional Orbital Bombardment System" often talked about in media ?

Consider the following communication technologies :1. Closed-circuit Television2. Radio Frequency Identification3. Wireless Local Area NetworkWhich of the above are considered Short-Range devices/technologies ?

With reference to Web 3·0, consider the following statements :1. Web 3·0 technology enables people to control their own data.2. In Web 3·0 world, there can be blockchain based social networks.3. Web 3·0 is operated by users collectively rather than a corporation.Which of the statements given above are correct ?

In the context of vaccines manufactured to prevent COVID-19 pandemic, consider the following statements: 1. The Serum Institute of India produced COVID-19 vaccine named Covishield using mRNA platform. 2. Sputnik V vaccine is manufactured using vector based platform. 3. COVAXIN is an inactivated pathogen based vaccine. Which of the statements given above are correct?

If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth? 1. GPS and navigation systems could fail 2. Tsunamis could occur at equatorial regions. 3. Power grids could be damaged. 4. Intense auroras could occur over much of the Earth. 5. Forest fires could take place over much of the planet. 6. Orbits of the satellites could be disturbed. 7. Shortwave radio communication of the aircraft flying over polar regions could be interrupted. Select the correct answer using the code given below:

Consider the following statements:1. Other than those made by humans, nanoparticles do not exist in nature.2. Nanoparticles of some metallic oxides are used in the manufacture of some cosmetics.3. Nanoparticles of same commercial products which enter the environment are unsafe for humans.Which of the statements given above is/are correct?

Which one of the following statements best describes the role of B cells and T cells in the human body?

Which one of the following statements best describes the role of B cells and T cells in the human body?[2022]