15 public questions tagged with this topic.
Matching i - b, ii - d, iii - a, iv - c aligns items correctly with accurate meanings.
Ref: Oxford Learner's Dictionary matching exercise pairs words with correct meanings based on authentic definitions given clearly explained reference.
Passage supports 'Dr. Stone'; text explicitly states this. Answer matches.
Ref: NCERT Class 10 English reading comprehension guide answers must be directly supported by passage details central theme explicit statements.
Transformation is the process of introducing foreign DNA into bacterial lls, either naturally or artificially. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Principles of Inheritance, Molecular Basis of Inheritance and Biotechnology, Topic: Genetics, DNA techniques and applications.
Primary amines have higher boiling points than tertiary amines due to hydrogen bonding. Thus, CH₃CH₂NH₂ (primary) > (CH₃)₃N (tertiary), as per the PDF’s physical properties.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Reaction with Nitrous Acid and Diazonium Salts - Part 1
C in CO₂: +4. In CH₂O: x + 2(+1) + (-2) = 0, x = 0, which is lower.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Electrode Potential and Electrochemical Series and Galvanic Cells
In S₈ + 8O₂ → 8SO₂, S (0) is oxidized to +4, and O (0) is reduced to -2.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Electrode Potential and Electrochemical Series and Galvanic Cells
In 3HNO₂ → HNO₃ + 2NO + H₂O, N (+3) is oxidized to +5 (HNO₃) and reduced to +2 (NO).
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Applications of Redox Reactions and Disproportionation
GMOs have various medical applications, including the production of insulin, vaccines, and other therapeutic proteins.
Ref: NCERT Class 12 Biology Chapter 9: Biotechnology: Principles and Processes Bioreactors and Downstream Processing
The tetanus vaccine is a toxoid vaccine, meaning it contains an inactivated toxin to stimulate immunity.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Immunity - Acquired Immunity - Active Passive Vaccination
Silicosis is not an allergic reaction; it is an occupational lung disease caused by prolonged exposure to silica dust.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
Silicosis is a chronic occupational lung disease caused by prolonged exposure to silica dust.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
The diffusion membrane in alveoli is much thinner than 1 mm, allowing efficient gas exchange.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
