Opens in a new tab
Join Anantam IAS Channel on Telegram
Open Telegram

TOPIC

General Science in Everyday Life

4 UPSC Prelims MCQs tagged "General Science in Everyday Life". Free practice with answer keys, explanations, and timed mock tests on Anantam IAS.

Agriculture and Allied Activities 56 Money, Banking and Monetary Policy 43 Environmental Pollution 43 Biotechnology 37 Parliament 33 Climate Change 32 Finance and Financial Markets 29 Emerging Technologies 28 Trade and External Sector 26 Life Sciences 26 Core Concepts and Foundational Science 20 Public Finance in India 19 International Environmental Framework 18 Continents 18 Religions in India 18 Fundamental Rights 18 Concept and Salient Features of the Constitution 17 Indian Biodiversity - Fauna 17 Renewable Energy 16 Major Physical Divisions of India 16 Multilateral Groupings 16 International Institutions 15 Art and Architecture 15 Drainage System 15 Institutional Measures for Environment Conservation 14 Regional Groupings 14 Rivers and Drainage 14 Infrastructure and Investment Models in India 14 Atmosphere 13 Space Technology 13

  1. Water can dissolve more substances than any other liquid because

    Water can dissolve more substances than any other liquid because

    1. Ait is dipolar in nature
    2. Bit is a good conductor of heat
    3. Cit has high value of specific heat
    4. Dit is an oxide of hydrogen
    Answer and explanation

    Correct answer: A

    Water molecules are polar, meaning they have a positive charge on one end (the hydrogen atoms) and a negative charge on the other end (the oxygen atom). This polarity allows water molecules to attract and interact with other polar or charged molecules, facilitating the dissolution of a wide range of substances in water.

    Therefore, option (a) is correct.

    Open this question on its own page

    Science & Technology UPSC 2021 Medium

  2. Which of the following is/are the example/examples of chemical change? 1. Crystallization of sodium…

    Which of the following is/are the example/examples of chemical change? 1. Crystallization of sodium chloride 2. Melting of ice 3. Souring of milk Select the correct answer using the code given below.

    1. A1 and 2 only
    2. B3 only
    3. C1, 2 and 3
    4. DNone
    Answer and explanation

    Correct answer: B

    Crystallization of sodium chloride: This is a physical change. The sodium chloride (table salt) is changing its form from a dissolved state in water to a solid crystal structure, but the chemical composition remains NaCl.

    Melting of ice: Similar to crystallization, melting of ice is a physical change. Water (H2O) molecules are rearranging from a rigid solid structure to a more fluid liquid state, but the chemical makeup stays the same.

    Souring of milk: This is a chemical change. Milk sugar (lactose) is broken down by bacteria into lactic acid. This process involves the formation of new substances and alters the chemical composition of the milk.

    Therefore, only statement 3 is an example of a chemical change.

    Open this question on its own page

    Science & Technology UPSC 2014 Medium

  3. Consider the following pairs : |Vitamin|Deficiency disease| |– |–| |1. Vitamin C | Scurvy|…

    Consider the following pairs : |Vitamin|Deficiency disease| |-- |--| |1. Vitamin C | Scurvy| |2. Vitamin D|Rickets| |3. Vitamin E | Night blindness| Which of the pairs given above is/are correctly matched?

    1. A1 and 2 only
    2. B3 only
    3. C1, 2 and 3
    4. DNone
    Answer and explanation

    Correct answer: A

    Statement 1 is correct: Vitamin C deficiency causes Scurvy is right.

    Statement 2 is correct: Vitamin D deficiency causes Rickets is right.

    Statement 3 is incorrect: Vitamin E deficiency causes Night blindness is wrong. Vitamin A deficiency causes Night blindness.

    Open this question on its own page

    Science & Technology UPSC 2014 Easy

  4. Consider the following minerals – 1. Calcium 2. Iron 3. Sodium Which of the…

    Consider the following minerals - 1. Calcium 2. Iron 3. Sodium Which of the minerals given above is/are required by the human body for the contraction of muscles?

    1. A1 only
    2. B1 and 2 only
    3. C1 and 3 only
    4. D1, 2 and 3
    Answer and explanation

    Correct answer: D

    All the given minerals have a role in the contraction of muscles in the human body.

    Calcium: Calcium is essential for activating enzymes that cause muscle contraction.

    Iron: Iron helps support continued muscle function by supporting energy production in your muscle cells so that muscle fibers always have the energy they need to contract properly. Iron also helps muscles store oxygen to fuel muscle contractions and promotes healthy circulation so that muscles can get additional oxygen from the bloodstream.

    Sodium: One needs sodium for muscle contraction because it balances potassium to maintain membrane potential.

    Open this question on its own page

    Science & Technology UPSC 2013 Hard