UKPSC 2012 Paper VI

Points to Remember: Definition and process of recombinant DNA technology. Applications in various fields (medicine, agriculture, industry). Ethical considerations and potential risks. Future prospects and advancements. Introduction: Recombinant DNA (rDNA) technology is a powerful set of techniques used to manipulate and combine DNA from different sources. It involves cutting and pasting DNA fragments from one … Read more What is recombinant DNA?

Points to Remember: Pressure is defined as force per unit area. The unit of pressure is Pascal (Pa), which is equivalent to N/m². The area of the wooden board needs to be calculated to determine the pressure. Introduction: Pressure is a fundamental concept in physics, defined as the force applied perpendicularly to the surface of … Read more A wooden board of dimensions 2 metres × 0.5 metres is placed on a table. What will be the pressure when a force of 80 Newton is applied on it?

Points to Remember: Seismometers measure ground motion. The Richter scale and moment magnitude scale are used to quantify earthquake magnitude. Intensity scales measure the effects of an earthquake on humans and structures. Introduction: Earthquakes are sudden, violent shaking of the ground caused by the movement of tectonic plates. Measuring the size and impact of these … Read more Which ‘instrument’ and ‘scale’ are used to measure earthquakes?

Points to Remember: The Uttarakhand Rehabilitation and Reconstruction Authority (URRA) was established in the aftermath of the 2013 Uttarakhand floods. Its primary objective is to rebuild and rehabilitate the affected areas and people. The authority’s work encompasses various sectors, including infrastructure, housing, and livelihood restoration. URRA’s effectiveness has been subject to scrutiny and debate. Introduction: … Read more What are the objectives of the Uttarakhand Rehabilitation and Reconstruction Authority?

Points to Remember: Four examples of renewable energy sources. Introduction: Renewable energy sources are naturally replenishing energy sources that are virtually inexhaustible on a human timescale. Unlike fossil fuels (coal, oil, and natural gas), which are finite and contribute significantly to climate change, renewable energy offers a sustainable alternative for meeting global energy demands. The … Read more Write down the names of four renewable energy sources.

Points to Remember: Queen bee development involves royal jelly feeding. Worker bee development involves a diet shift after larval stage. Both undergo complete metamorphosis. Genetic factors and environmental cues play crucial roles. Introduction: Honeybees (Apis mellifera) exhibit a fascinating social structure with a clear division of labor. The colony’s success hinges on the coordinated activities … Read more How do the queen and worker honey bee develop?

Points to Remember: Definition and causes of acid rain. Effects of acid rain on the environment and human health. Methods for preventing and mitigating acid rain. International and national efforts to control acid rain. Introduction: Acid rain, a term encompassing any form of precipitation with acidic components, such as sulfuric or nitric acid that fall … Read more What is acid rain?

Points to Remember: The question seeks the identification of a specific Environment Act often referred to as the “Umbrella Act.” The approach required is primarily factual, relying on knowledge of environmental legislation. Introduction: Numerous countries have enacted comprehensive environmental legislation to address diverse environmental challenges. Often, a single act serves as a framework, incorporating or … Read more Which Environment Act is also known as the Umbrella Act?

Points to Remember: Definition of unsaturated fatty acids. Types of unsaturated fatty acids (monounsaturated and polyunsaturated). Sources of unsaturated fatty acids. Health benefits and potential drawbacks of consuming unsaturated fatty acids. Comparison with saturated and trans fats. Introduction: Unsaturated fatty acids are a type of fat that are essential components of a healthy diet. Unlike … Read more Define unsaturated fatty acids.