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1. What is the force that opposes the motion of a body rolling on a surface called?

a) Sliding friction

b) Rolling friction

c) Fluid friction

d) Air resistance

2. What factors affect the magnitude of rolling friction?

a) Surface roughness and material

b) Velocity and mass

c) Temperature and humidity

d) All of the above

3. How does the coefficient of rolling friction compare to the coefficient of sliding friction?

a) It is always greater

b) It is always smaller

c) It is the same

d) It depends on the surfaces and materials involved

4. What type of surface typically has the lowest coefficient of rolling friction?

a) Rough concrete

b) Smooth steel

c) Rubber on asphalt

d) Sand on wood

5. How can the rolling friction of a wheel be reduced?

a) Increasing the tire pressure

b) Decreasing the tire pressure

c) Using a harder tire material

d) Using a softer tire material

6. What type of wheel is most commonly used to reduce rolling friction?

a) Solid wheel

b) Pneumatic wheel

c) Spoked wheel

d) Metal wheel

7. What is the name of the device that is used to measure the coefficient of rolling friction?

a) Rolling friction tester

b) Friction force sensor

c) Rolling resistance meter

d) Friction coefficient gauge

8. How does the rolling friction of a ball bearing compare to that of a sliding bearing?

a) It is always greater

b) It is always smaller

c) It is the same

d) It depends on the surfaces and materials involved

9. In what type of application would the rolling friction be more important than the sliding friction?

a) A car driving on a smooth road

b) A skateboarder performing a trick

c) A train running on tracks

d) A boat sailing on a lake

10. How does the rolling friction of a wheel change with the speed of the wheel?

a) It increases

b) It decreases

c) It remains the same

d) It depends on the surfaces and materials involved

Answers:

    1. b
    2. d
    3. b
    4. b
    5. a
    6. b
    7. c
    8. b
    9. c
    10. c

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    Multiple Choice Questions (MCQs)

    The UPSC (Union Public Service Commission) Prelims exam is the first step in the selection process for the Indian Administrative Service (IAS), Indian Foreign Service (IFS), and Indian Police Service (IPS) among other civil services in India. The exam consists of two papers: General Studies Paper 1 and General Studies Paper 2 (also known as the Civil Services Aptitude Test or CSAT). The General Studies Paper 1 is worth 200 marks and is comprised of multiple choice questions (MCQs). The exam tests the candidate's knowledge of current events, Indian and World history, Indian and World geography, Indian polity and governance, economic and social development, general science and environmental ecology and biodiversity.

    The UPSC Prelims exam is a highly competitive exam and it is important for candidates to have a thorough understanding of the syllabus and to practice as many MCQs as possible to increase their chances of success.

    You will have to answer all the questions within a limited time frame. So practice time management techniques and use a timer while solving mock tests.

    The questions are designed to test the candidate's understanding of the subject matter and their ability to apply that knowledge in a practical context. So, MCQs on this website are prepared in that direction to make you conceptually strong.

    The MCQs in UPSC Prelims are generally of the following types:

    1. Factual: These questions test the candidate's knowledge of basic facts, figures, and dates.
    2. Conceptual: These questions test the candidate's understanding of concepts and principles.
    3. Analytical: These questions test the candidate's ability to analyze and interpret information.
    4. Applied: These questions test the candidate's ability to apply their knowledge to practical situations.
    5. Current events: These questions test the candidate's knowledge of recent events and happenings.