Q.2. Consider the following statements regarding the use of bacterial enzymes for plastic degradation, choose the incorrect options :
A. The esterase enzyme produced by Sulfobacillus acidophilus has been successfully used by IIT Roorkee to break down a high molecular weight plasticizer.
B. Plasticizers are chemicals added to plastics to enhance flexibility and shine.
C. The breakdown of DEHP plasticizer by esterase enzyme results in water and oxygen as the final products.
D. Plasticizers can be absorbed through the skin, posing a direct threat to human health due to their toxic effects.
A. The esterase enzyme produced by Sulfobacillus acidophilus has been successfully used by IIT Roorkee to break down a high molecular weight plasticizer.
B. Plasticizers are chemicals added to plastics to enhance flexibility and shine.
C. The breakdown of DEHP plasticizer by esterase enzyme results in water and oxygen as the final products.
D. Plasticizers can be absorbed through the skin, posing a direct threat to human health due to their toxic effects.
Q.3. Consider the following statements regarding dinosaurs and the recent discovery of a ‘Dinosaur Highway’:
1. The recently discovered Dinosaur Highway in Oxfordshire, UK, contains hundreds of footprints from the Middle Jurassic Period (around 166 million years ago), including those of the Megalosaurus, a large carnivorous dinosaur.
2. Dinosaurs are classified into two major groups based on their hip structure: Ornithischians ("BirdHipped") and Saurischians ("Lizard-Hipped"), with Theropods being the ancestors of modern birds.
3. The main cause of dinosaur extinction was massive volcanic eruptions in the Deccan Traps (India), which led to a sudden drop in global temperatures and widespread habitat loss.
1. The recently discovered Dinosaur Highway in Oxfordshire, UK, contains hundreds of footprints from the Middle Jurassic Period (around 166 million years ago), including those of the Megalosaurus, a large carnivorous dinosaur.
2. Dinosaurs are classified into two major groups based on their hip structure: Ornithischians ("BirdHipped") and Saurischians ("Lizard-Hipped"), with Theropods being the ancestors of modern birds.
3. The main cause of dinosaur extinction was massive volcanic eruptions in the Deccan Traps (India), which led to a sudden drop in global temperatures and widespread habitat loss.
Which of the statements given above is/are correct ?
Anonymous Quiz
48%
A. 1 and 2 only
19%
B. 2 and 3 only
16%
C. 1 and 3 only
17%
D. 1, 2, and 3
Q.1. Consider the following statements regarding the recent findings in the Arctic Report Card 2024 :
1. The Arctic region is experiencing accelerated warming, with 2024 recorded as the second-warmest year since measurements began in 1900.
2. The Arctic tundra, which historically acted as a carbon sink, is now becoming a carbon source, releasing both carbon dioxide and methane.
3. Melting Arctic glaciers and the Greenland Ice Sheet contribute to rising global sea levels, but they do not impact coastal flooding in Arctic communities.
4. A shorter sea ice season in the Arctic leads to increased ocean heat absorption, disrupting ecosystems, forcing sea ice-dependent animals ashore, and lengthening the Arctic shipping season.
1. The Arctic region is experiencing accelerated warming, with 2024 recorded as the second-warmest year since measurements began in 1900.
2. The Arctic tundra, which historically acted as a carbon sink, is now becoming a carbon source, releasing both carbon dioxide and methane.
3. Melting Arctic glaciers and the Greenland Ice Sheet contribute to rising global sea levels, but they do not impact coastal flooding in Arctic communities.
4. A shorter sea ice season in the Arctic leads to increased ocean heat absorption, disrupting ecosystems, forcing sea ice-dependent animals ashore, and lengthening the Arctic shipping season.
How many of the above statements given above is incorrect ?
Anonymous Quiz
17%
A. Only one
47%
B. Only two
33%
C. Only three
3%
D. None of the above
Q.2. Consider the following statements regarding Manganese (Mn) contamination and its impact on health and the environment, choose the incorrect option :
A. Manganese is an essential trace element required for maintaining body homeostasis, but excessive consumption can lead to severe toxicity and health risks.
B. The primary sources of Manganese contamination in groundwater are anthropogenic activities like industrial pollution, but it can also originate from geogenic sources like sedimentary and igneous rocks.
C. Manganese poisoning has never been reported in India, making recent findings in Bihar the first documented cases of its toxicity.
D. High levels of Manganese contamination in groundwater have been reported globally, including in Bangladesh, China, Greece, and Nigeria.
A. Manganese is an essential trace element required for maintaining body homeostasis, but excessive consumption can lead to severe toxicity and health risks.
B. The primary sources of Manganese contamination in groundwater are anthropogenic activities like industrial pollution, but it can also originate from geogenic sources like sedimentary and igneous rocks.
C. Manganese poisoning has never been reported in India, making recent findings in Bihar the first documented cases of its toxicity.
D. High levels of Manganese contamination in groundwater have been reported globally, including in Bangladesh, China, Greece, and Nigeria.
Q.3. Consider the following statements regarding Sacred Groves in India :
1. Sacred groves are patches of forests traditionally protected by local communities due to their religious and cultural significance
2. The Wild Life (Protection) Act, 1972 allows State Governments to declare private or community lands as community reserves for protecting fauna, and flora, conservation practices.
3. Sacred groves are exclusively found in the Western Ghats region of Tamil Nadu, Kerala, Karnataka, and Maharashtra.
1. Sacred groves are patches of forests traditionally protected by local communities due to their religious and cultural significance
2. The Wild Life (Protection) Act, 1972 allows State Governments to declare private or community lands as community reserves for protecting fauna, and flora, conservation practices.
3. Sacred groves are exclusively found in the Western Ghats region of Tamil Nadu, Kerala, Karnataka, and Maharashtra.
Which of the statements given above is/are correct ?
Anonymous Quiz
56%
A. 1 and 2 only
10%
B. 2 and 3 only
18%
C. 1 and 3 only
16%
D. 1, 2, and 3
Let's get back to revising for UPSC Prelims 2025! We're going live tomorrow at 12:00 PM with top 100 MCQs from IR!
Watch here: https://www.youtube.com/live/wbPXddlAIHM?si=HieuvwzlAmGkuXRE
Watch here: https://www.youtube.com/live/wbPXddlAIHM?si=HieuvwzlAmGkuXRE
Operation Sindoor: 25 Terms from the India-Pakistan Conflict you should know for UPSC
Live Session by Shekhar sir today at 5:00 PM.
Watch here: https://youtube.com/live/QuONIPnBRhE?feature=share
Live Session by Shekhar sir today at 5:00 PM.
Watch here: https://youtube.com/live/QuONIPnBRhE?feature=share