UKPSC 2016 Paper VI

Points to Remember: Escape velocity is the minimum speed needed for an object to escape a planet or moon’s gravitational pull without further propulsion. It depends on the mass and radius of the celestial body. The formula for escape velocity involves the gravitational constant (G). Introduction: Escape velocity is a crucial concept in astrophysics and … Read more Calculate the escape velocity from the moon. The mass of the moon = 7.4 x 10²² kg and the radius of the moon = 1740 km.

Points to Remember: Definition and basic principles of remote sensing. Types of remote sensing (passive and active). Platforms used for remote sensing (satellites, aircraft, drones). Applications of remote sensing across various fields. Advantages and limitations of remote sensing. Introduction: Remote sensing is the Join Our Telegram Channel science and art of obtaining information about an … Read more What do you understand by Remote Sensing?

Points to Remember: Normal RBC count in adult men and women. Lifespan of Red Blood Corpuscles (RBCs). Variations and factors influencing RBC count. Introduction: Red blood corpuscles, also known as erythrocytes or red blood cells (RBCs), are Subscribe on YouTube the most abundant type of blood cell and a vital component of the circulatory system. … Read more What is generally the number of red blood corpuscles per cubic millimeter of blood in an adult man and woman, and what is the approximate lifespan of Red Blood Corpuscles?

Points to Remember: Health effects of nitrate exposure, particularly on infants. Environmental sources of nitrate contamination. Regulations and treatment methods for nitrate removal. Long-term health implications and cumulative effects. Introduction: Nitrates (NO₃⁻) are naturally occurring compounds found in soil and water. However, excessive nitrates in drinking water pose a significant threat to human health, particularly … Read more What is the effect of excess nitrates in drinking water?

Points to Remember: Biodiversity encompasses the variety of life at all levels of biological organization. It includes genetic diversity, species diversity, and ecosystem diversity. Loss of biodiversity has significant consequences for human well-being and the planet. Conservation efforts are crucial for maintaining biodiversity. Introduction: Biodiversity, a contraction of “biological diversity,” refers to the variety of … Read more Define Biodiversity.

Points to Remember: Sustainable development balances economic growth, social equity, and environmental protection. It considers the needs of the present without compromising the ability of future generations to meet their own needs. It requires integrated approaches involving governments, businesses, and individuals. Measuring and monitoring progress towards sustainable development is crucial. Introduction: Sustainable development is a … Read more What is sustainable development?

Points to Remember: Difference in reactivity between iron and aluminum. Role of oxidation and passivation. Formation of oxide layers and their properties. Introduction: Rusting, or the corrosion of iron, is a common phenomenon resulting in significant economic losses annually. It’s a chemical process where iron reacts with oxygen and water to form hydrated iron(III) oxide, … Read more Rusting occurs in Iron but not in Aluminium. Explain why.

Points to Remember: Definition and process of genetic modification in crops. Benefits and drawbacks of genetically modified (GM) crops. The role of multinational corporations in introducing GM crops, specifically Bt-cotton in India. The socio-economic impact of Bt-cotton in India. Introduction: Genetically modified (GM) crops, also known as transgenic crops, are plants whose genetic material has … Read more What are genetically modified crops? Which multinational company introduced Bt-Cotton in India?

Points to Remember: Identify specific transgenic plants engineered for mercury detoxification. Specify the genes used in these plants to achieve mercury detoxification. Maintain a factual approach, relying on scientific evidence. Introduction: Mercury (Hg) is a highly toxic heavy metal posing significant environmental and health risks. Its bioaccumulation in the food chain can lead to severe … Read more Name the transgenic plant(s) and the genes used for mercury detoxification.

Points to Remember: Elements are fundamental substances that cannot be broken down into simpler substances by chemical means. Compounds are substances formed by the chemical combination of two or more elements in fixed proportions. Elements are represented by symbols, while compounds are represented by chemical formulas. Elements have unique properties, while compounds have properties different … Read more Differentiate between compound and element by definition.