A major organism used in commercial bioleaching for copper recovery is 1. Thiobacillusferrooxidans 2. Desulfovibriodesulfuricans 3. Pseudomonas aeruginosa 4. Aspergillusniger Detailed Explanation: The correct answer is: 1. Thiobacillus ferrooxidans […]
Tag: DBT JRF PYQ 2020
Tag: DBT JRF PYQ 2020
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DBT BET JRF 2020 Previous Year Questions and Video solutions
Why Mercury Does Not Wet Glass: The Role of Surface Tension
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- April 13, 2025
- 4 Comments
The fluid property, due to which, mercury does not wet the glass is 1. surface tension 2. specific gravity 3. polarity 4. viscosity Detailed Explanation: The correct answer is: 1. […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding the Beta-Sheet Rich Structure of Prion Proteins
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- April 13, 2025
- 3 Comments
The 𝜷 − 𝒔𝒉𝒆𝒆𝒕 rich structure of prion protein represents the 1. abnormal disease-causing protein 2. soluble form of the protein 3. normal functional protein 4. intermediator state of the […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Cellular Sources of Reactive Oxygen Species (ROS): What the Nucleus Doesn’t Do
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- April 13, 2025
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Which of the following organelle is NOT a site for Reactive Oxygen Species (ROS) generation? 1. nucleus 2. mithochondria 3. peroxisomes 4. endoplasmic reticulum Detailed Explanation: The correct answer […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding Transesterification: The Key Process in Biodiesel Production
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- April 13, 2025
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Which of the following processes is used to produce biodiesel? 1. transamidation 2. interesterification 3. transglycosylation 4. transesterification Detailed Explanation: Transesterification is the correct process used to produce biodiesel, making […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding the Importance of Phylogenetic Trees in Evolutionary Studies
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- April 13, 2025
- 3 Comments
Phylogenetic tree provides information about 1. evolution relationships between organisms 2. environmental relationships between organisms 3. ecological relationships between organism 4. none of the given options Understanding the Importance […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding Prenatal Procedures and Their Risks to Unborn Children
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- April 13, 2025
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Which of these procedures poses the least risk to an unborn child? 1. embryoscopy&fetoscopy 2. amniocentesis 3. alpha-feto protein sampling 4. chronic villi sampling Introduction Pregnancy is a time […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding Amino Acids with Negatively Charged Side Chains
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- April 13, 2025
- 3 Comments
Two amino acids with negatively charged side chains are 1. aspartic acid and glycine 2. aspartic acid and lysine 3. lysine and glutamic acid 4. aspartic acid and glutamic acid […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding the Two Film Theory of Mass Transfer and Its Role in Fluid Dynamics
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- April 13, 2025
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Two film theory of mass transfer considers 1. variable resistance at the interface 2. maximum resistance at the interface 3. 50 % resistance at the interface 4. negligible resistance at […]
DBT BET JRF 2020 Previous Year Questions and Video solutions
Understanding Toll-Like Receptors in Innate Immunity: How the Body Recognizes Pathogens
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- April 13, 2025
- 5 Comments
The Innate immune system recognizes Pathogen Associated Molecular Patterns (PAMPs) through activation of 1. B cell recpetors 2. Fc recpeptor 3. Toll-like receptor 4. T cell receptor Introduction The innate […]
