TEST - 2 (MOCK TEST - 2) Total Marks : 200 1 Tata Motors has recently unveiled India’s first Bio-CNG (bio-methane) bus. Chemically, bio-methane is identical to natural gas, however, natural gas is classified as a fossil fuel, whereas bio-methane is called as a renewable source of energy. This is because 1. Nature of production process of bio-methane reduces its emissions of greenhouse gases into the air. 2. Bio-methane is produced from fresh organic matter, unlike natural gas which is obtained from decomposition of fossils. Which of the above is/are correct? A. 1 only B. 2 only C. Both 1 and 2 D. None Correct Answer : C Answer Justification : Justification: Statement 1: Biomethane is produced by ‘anaerobic’ digestion of organic matter such as dead animal and plant material. This gas when produced out of natural degradation process, escapes into the atmosphere unused. But, if produced under controlled conditions, the impact on environment can be significantly reduced. Statement 2: Methane is produced from thousands or millions of years old fossil remains of organic matter that lies buried deep in the ground. Production of fossil fuel derived methane, therefore, depends exclusively on its natural reserves which vary greatly from one country to another and are not available in limitless amounts. Biomethane, on the other hand, is produced from “fresh” organic matter which makes it a renewable source of energy that can be produced worldwide. Since biomethane is chemically identical to natural gas, it can be used for the same applications as natural gas. Q Source: As mentioned above www.insightsias.com 1 © Insights Active Learning | All rights reserved - 911. You may not reproduce, distribute or exploit the contents in any form without written permission by copyright owner. Copyright infringers may face civil and criminal liability TEST - 2 (MOCK TEST - 2) Total Marks : 200 2 What would happen if the Earth stopped spinning immediately? 1. The atmosphere would come to a complete standstill instantly. 2. Objects on top of the earth would be thrown away with great speed. 3. Every spot in the Earth would have permanent daytime or night time all year long. 4. It would freeze in a very short period of time. Select the correct answer using the codes below. A. 1, 2 and 3 only B. 2 only C. 2, 3 and 4 only D. 1 and 3 only Correct Answer : B Answer Justification : Justification: Statement 1: If the Earth stopped spinning suddenly, the atmosphere would still be in motion with the Earth's original 1100 mile per hour rotation speed at the equator. Statement 2: All of the land masses would be scoured clean of anything not attached to bedrock. This means rocks, topsoil, trees, buildings, animals, and so on, would be swept away into the atmosphere. This is because earth’s spin provided a centrifugal (a pseudo force) force towards the centre of the earth. When this vanishes, there is a sudden jerk and due to your inertia (as you were moving with the earth) you would be thrown away at great speed. Statement 3: No, if the earth kept revolving (even if it stopped spinning), all places will see day and night. But, the duration of 24 hours would turn into months. Statement 4: We cannot conclude anything about the temperature drop for the entire earth. However, those parts would freeze which fail to get abundant sunlight. Q Source: Additional Research: Page 19: 6th NCERT Geography www.insightsias.com 2 © Insights Active Learning | All rights reserved - 911. You may not reproduce, distribute or exploit the contents in any form without written permission by copyright owner. Copyright infringers may face civil and criminal liability TEST - 2 (MOCK TEST - 2) Total Marks : 200 3 With reference to Araghatta or Persian wheels, consider the following statements. 1. It was a water lifting device used to irrigate small fields. 2. Babur Nama mentions the existence and use of Araghatta. 3. There is evidence of the use of Araghatta in Kolar, Karnataka. Select the correct answer using the codes below. A. 1 only B. 2 and 3 only C. 3 only D. 1, 2 and 3 Correct Answer : D Answer Justification : Justification: Statement 1: It's a simple water lifting device, where a number of small pots are attached to a long chain. It is believed that the technology originated in Egypt and as world shrunk through extensive trading, it spread to India and China. Statement 2: One of the earliest mentions of the Persian Wheel occurs in the Babur's memoirs, the Babur Nama (1526-30). Statement 3: However, despite that evidence, several factors have also contributed to the disappearance of the Persian Wheel from Kolar town. This is because the biggest drawback of Persian wheels was its inability to draw water when the level is low. Q Source: Additional Research: Page 3: 9th NCERT Economics www.insightsias.com 3 © Insights Active Learning | All rights reserved - 911. You may not reproduce, distribute or exploit the contents in any form without written permission by copyright owner. Copyright infringers may face civil and criminal liability TEST - 2 (MOCK TEST - 2) Total Marks : 200 4 Which of these geographical features is most likely to have the lowest mean elevation? A. Plateaus B. Islands C. Deltas D. Plains Correct Answer : C Answer Justification : Justification: Option A: They are elevated land tops, and maintain a rugged high profile of terrain. Option B: Islands although situated at sea level can acquire higher elevation due to presence of features like mountains, volcanoes etc. Option C: Deltas occur near the sea mouth, i.e. very close to Mean sea level, which can be the lowest elevation possible. Option D: Rivers flow further from plains to join the sea. So, plains are usually at a higher elevation than delta. Q Source: Page 39 (Figure 6.1): 6th NCERT Geography www.insightsias.com 4 © Insights Active Learning | All rights reserved - 911. You may not reproduce, distribute or exploit the contents in any form without written permission by copyright owner. Copyright infringers may face civil and criminal liability TEST - 2 (MOCK TEST - 2) Total Marks : 200 5 With reference to High-yielding varieties (HYVs) crops, consider the following statements. 1. Such crops do not require any reliance on irrigation and fertilizers. 2. Yield can be high in these varieties only if they are allowed to mature later than normal crops. Which of the above is/are correct? A. 1 only B. 2 only C. Both 1 and 2 D. None Correct Answer : D Answer Justification : Justification: High-yielding varieties (HYVs) of agricultural crops are usually characterized by a combination of the following traits in contrast to the conventional varieties: higher crop yield per area (hectare) dwarfness improved response to fertilizers high reliance on irrigation and fertilizers - see intensive farming early maturation So, both 1 and 2 are wrong. Most important HYVs can be found among wheat, corn, soybean, rice, potato, and cotton. HYVs become popular in the 1960s and play an important role in the green revolution. Q Source: Additional Research: Page 4: 9th NCERT Economics www.insightsias.com 5 © Insights Active Learning | All rights reserved - 911. You may not reproduce, distribute or exploit the contents in any form without written permission by copyright owner. Copyright infringers may face civil and criminal liability TEST - 2 (MOCK TEST - 2) Total Marks : 200 6 What is/are Castor seed plants generally known for? 1. They are a bio-indicator of pollution because they do not grow in areas where groundwater is polluted. 2. They are an exotic species to India, and were introduced by the French. 3. They form components of many cosmetics. 4. High percentage of ricinoleic acid in its residues has anti-microbial properties. Select the correct answer using the codes below. A. 2, 3 and 4 only B. 3 and 4 only C. 1, 2 and 4 only D. 2 and 3 only Correct Answer : B Answer Justification : Justification: Statement 1: It is one of the sturdiest plants that can grow in areas where the soil is highly polluted, including in areas where mining is carried out. Statement 2: Castor is indigenous to the southeastern Mediterranean Basin, Eastern Africa, and India. Statement 3: It is a popular medicine as well as used in cosmetics. Statement 4: Castor seed is the source of castor oil, which has a wide variety of uses. The seeds contain between 40% and 60% oil that is rich in triglycerides, mainly ricinolein. The acid and its derivatives, inhibits many microbes, whether viral, bacterial or fungal. Learning: The use of castor bean oil ("eranda") in India has been documented since 2000 BC in lamps and in local medicine as a laxative, purgative, and cathartic in Unani, Ayurvedic, siddha and other ethnomedical systems. Q Source: Additional Research: http://www.newindianexpress.com/cities/hyderabad/2017/jul/17/castor-oil-can-reduce-soil-pollution- 1629688.html www.insightsias.com 6 © Insights Active Learning | All rights reserved - 911. You may not reproduce, distribute or exploit the contents in any form without written permission by copyright owner. Copyright infringers may face civil and criminal liability TEST - 2 (MOCK TEST - 2) Total Marks : 200 7 With reference to the International Date Line, consider the following statements. 1. It was established in response to Cold war situations after the second World War. 2. It passes through the mid-Atlantic Ocean 3. It functions as a ‘line of demarcation’ separating two consecutive calendar dates. 4. It has no legal international status and countries are free to choose the dates that they observe. Select the correct answer using the codes below.