Q861. Which of the following two are the major constituents of biogas? 1.Methane 2.Butane 3.Carbon dioxide 4.Carbon Monoxide Code
A 1 and 3 B 3 and 4 C 2 and 3 D 1 and 2
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Correct answer: 1 and 3
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Q862. Two statements are given: Assertion (A): Lead and tin alloy are generally used as the material for fuse wire. Reason (R) : The melting point of lead and tin alloy is higher than that of copper and aluminium. Code
A Both (A) and (R) are correct, but (R) does not explain (A) correctly. B (A) is incorrect, but (R) is true. C (A) is correct, but (R) is false. D Both (A) and (R) are correct and (R) correctly explains (A).
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Correct answer: (A) is correct, but (R) is false.
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Q863. Which of the following gases is/are lighter than air? 1.Hydrogen chloride 2.Sulfur dioxide 3.Helium Code
A 1 and 2 B Only 3 C 2 and 3 D Only 1
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Correct answer: Only 3
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Q864. Which of the following enzymes is/are released in the stomach for the digestion of proteins? 1.Chymotrypsin 2.Trypsin 3.Pepsin Code
A Only 1 and 2 B Only 3 C Only 2 and 3 D 1, 2 and 3
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Correct answer: Only 3
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Q865. Which of the following is/are true with respect to lichens? 1. Lichens are very good indicators of pollution. 2. Lichens grow well in polluted areas. Code
A Only 2 B Neither 1 Nor 2 C 1 and 2 Both D Only 1
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Correct answer: Only 1
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Q866. Which of the following statements is/are correct regarding 'baking soda'? 1. It is sodium hydrogen carbonate. 2. It is used in acidic. Code
A Only 2 B Neither 1 Nor 2 C 1 and 2 Both D Only 1
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Correct answer: 1 and 2 Both
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Q867. Earthworms increase the fertility of the soil and are called the friends of the farmers. 2. Earthworm has two pairs of hearts. Code
A Only 2 B Neither 1 Nor 2 C 1 and 2 Both D Only 1
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Correct answer: Only 1
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Q868. Which of the following pair is not correctly matched? Acid Acid is found 1. Lactic Acid Yogurt 2. Tartaric Acid grapes 3. Acetic Acid Potato Code
A 1 and 2 B Only 3 C 2 and 3 D Only 1
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Correct answer: Only 3
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Q869. With reference to 'blood', which of the following statements is/are correct? 1. Blood is made up of plasma and different types of cells. 2. The presence of hemoglobin makes the blood reddened. Choose the correct answer from the code given below
A Only 2 B Neither 1 Nor 2 C 1 and 2 Both D Only 1
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Correct answer: 1 and 2 Both
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Q870. Which of the following statements is/are correct? 1. Dolphins and whales breathe through the blowhole. 2. Earthworms breathe through their skin. Choose the correct answer from the code given below
A Only 2 B Neither 1 Nor 2 C 1 and 2 Both D Only 1
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Correct answer: 1 and 2 Both
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Q871. Consider the following elements found in a normal 70 kg person and arrange them in the correct ascending order (from reduction to more). 1.Sodium 2.potassium 3.copper 4.iron Code
A 4, 3, 1, 2 B 3, 4, 2, 1 C 3, 4, 1, 2 D 4, 3, 2, 1
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Correct answer: 3, 4, 1, 2
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Q872. Match List-I with List-II and select the correct answer using the code given below the lists. List–I (Nuclear Power Plant) List–II (State) A. Kudankulam 1. Karnataka B. Kakrapar 2. Tamil Nadu C. Kaiga 3. Rajasthan D. Rawatbhata 4. Gujarat Code
A A-2, B-4, C-1, D-3 B A-2, B-3, C-4, D-1 C A-4, B-2, C-1, D-3 D A-4, B-3, C-2, D-1
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Correct answer: A-2, B-4, C-1, D-3
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Q873. Which of the following statements is/are correct with respect to isotopes? 1. Atoms with the same atomic number but different atomic mass are called isotopes. 2. Protium, deuterium and tritium are isotopes of carbon. Code
A Only 2 B Neither 1 Nor 2 C 1 and 2 Both D Only 1
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Correct answer: Only 1
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Q874. Arrange the following electromagnetic radiations in descending order of their frequencies. 1.Gamma rays 2. Ultraviolet Rays 3.Radio Waves 4.X-Rays Code
A 1, 4, 3, 2 B 4, 1, 2, 3 C 1, 4, 2, 3 D 4, 1, 3, 2
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Correct answer: 1, 4, 2, 3
Concept note
Q875. Given below are two statements, one of which is called Assertion (A) and the other is called Reason (R). Assertion (A): Sustainable development should occur without harming the environment and the development of the present should not compromise with the needs of future generations. Reason (R): Agenda 21 was signed by world leaders in 1995.
A Both (A) and (R) are correct, but (R) does not correctly explain (A) B (A) is incorrect, but (R) is true C (A) is correct, but (R) is false D Both (A) and (R) are correct and (R) correctly explains (A)
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Correct answer: (A) is correct, but (R) is false
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Q876. Which of the following statements is/are correct with reference to 'Carrying Capacity of the Environment'? 1. The rate of resource extraction should be higher than the rate of resource creation. 2. The waste production should remain within the absorption capacity of the environment. Code
A Only 2 B Neither 1 Nor 2 C 1 and 2 Both D Only 1
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Correct answer: Only 2
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Q877. Which of the following statements is/are correct with reference to 'Ozone Layer'? 1.The ozone layer protects the Earth's surface from ultraviolet (UV) radiation coming from the Sun. 2.Ozone depletion has been linked to chlorofluorocarbons (CFCs). Code
A Only 2 B Neither 1 Nor 2 C 1 and 2 Both D Only 1
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Correct answer: 1 and 2 Both
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Q878. Match List-I with List-II and select the correct answer from the code given below. List–I List–II (National Park/Wildlife Sanctuary) (State/UT) A. Dachigam 1. Madhya Pradesh B. Keoladeo 2. Rajasthan C. Kanha 3. Kerala D. Periyar 4. Jammu & Kashmir Choose the correct answer from the code given below — A B C D A B C D
A 4, 2, 3, 1 B 2, 4, 1, 3 C 2, 4, 3, 1 D 4, 2, 1, 3
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Correct answer: 4, 2, 1, 3
Concept note
Q879. Given below are two statements, one of which is called Assertion (A) and the other is called Reason (R). Assertion (A): India's success is crucial for the global success of the Sustainable Development Goals (SDGs). Reason (R): India is home to about one-sixth of the world's total population.
A Both (A) and (R) are correct, but (R) does not correctly explain (A) B (A) is incorrect, but (R) is true C (A) is correct, but (R) is false D Both (A) and (R) are correct and (R) correctly explains (A)
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Correct answer: Both (A) and (R) are correct and (R) correctly explains (A)
Concept note
Q880. Which of the following statements is/are correct with reference to 'Mangrove Initiative (MFF)' for coastal habitat and tangible income? 1. It was launched in 2019. 2. It aims to restore mangrove forests. Choose the correct answer from the code given below
A Only 2 B Neither 1 Nor 2 C 1 and 2 Both D Only 1
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Correct answer: Only 2
Concept note