Sign up now
to enroll in courses, follow best educators, interact with the community and track your progress.
23 lessons,
3h 1m
Enroll
199
Download
Practice MCQ's- Environment & Ecology 4
30 plays

More
Highly recommended for MPPSC/UPSC Exam

Sudarshan Gurjar is teaching live on Unacademy Plus

Sudarshan Gurjar
Top & Verified Plus Educator. Winner of Perfect Presence Award!! Mentored more than 10,000 students.

Unacademy user
  1. Aboutme SUDARSHAN GURAR Verified Educator & Plus Educator at Unacademy Mentored more than 10,000 students. Teaching Geography since 2013 ( UPSC category). A Geography Learner. COURSES AVAILABLE ON PLATFORM Geography through Maps. Current Affairs & In-depth Editorial Analysis. Special Current Affairs on Madhya Pradesh & many more. PLUS CoURSES Current Affairs & In-depth Editorial Analysis. unacademy


  2. UPSC PLUS COURSE unacademy Sudarshan Gurjar Geography & Current Issues of Environment unacademy


  3. Unacademy Sponsored. Register for this MPPSC course, learn from one of India's Top Educator and give yourself the best chance to ace the exam! MPPSC PLUS COURSE Art & Culture of Madhya Pradesh for MPPSC (Prelims & Mains) unacadem Sudarshan Gurjar unacademy UNACADEMY.COM Everything you need for MPPSC! Unacademy, your one-stop solution! Apply Now


  4. Hyperloop, recently seen in news, refers to a- (a) newly developed technology to recycle nuclear fuel (b) process to improve photosynthesis efficiency in plants. (c) proposed high-speed passenger and freight transportation model (d) new technology to provide high speed WiFi services in rural areas.


  5. Answer C Hyperloop is a proposed mode of passenger and freight transportation that propels a pod-like vehicle through a near- vacuum tube at more than airline speed. The pods would accelerate to cruising speed gradually using a linear electric motor and glide above their track using passive magnetic levitation or air bearings. . The tubes could also go above ground on columns or underground, eliminating the dangers of grade crossings. The system will be highly energy-efficient, quiet and autonomous.


  6. Which of the following conditions favour ozone depletion over Antarctica leading to formation of ozone hole? 1. Formation of polar stratospheric clouds (PSC) during winter. 2. Formation of chlorine sinks during summer. 3. Formation of free chlorine radicals in the spring. Select the correct answer using the code given below: (a) 1 and 2 only (b) 1, 2 and 3 (c) 3 only (d) 1 and 3 only


  7. Statement 1 is correct. In winter, special type of clouds called polar stratospheric clouds are formed over Antarctica. These polar stratospheric clouds provide surface on which chlorine nitrate formed gets hydrolysed to form hypochlorous acid. It also reacts with hydrogen chloride produced to give molecular e chlorine Statement 2 is not correct. This condition does not lead to ozone depletion. In summer season, nitrogen dioxide and methane react with chlorine monoxide and chlorine atoms forming chlorine sinks, preventing much ozone deptetion. .


  8. Which of the following are the abiotic components of the ecosystem? 1. Water 2. Solar energy 3. Gravity 4. Decomposers 5. Soil Select the correct answer using the code given below. (a) 1 and 5 only (c) 2, 3 and 4 only (b) 1, 2, 3 and 5 only (d) 1, 3, 4 and 5 only