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1. What type of rays are produced when a metal target is bombarded with high energy electrons?

A. Alpha rays

B. Beta rays

C. Gamma rays

D. X-rays

2. What is the charge of a positron?

A. Positive

B. Neutral

C. Negative

D. Variable

3. What is the effect of a positive ray on a photographic plate?

A. It causes a darkening of the plate

B. It causes a lightening of the plate

C. It causes no effect on the plate

D. It causes the plate to become radioactive

4. What is the main difference between a positive ray and an alpha particle?

A. Positive rays are negatively charged, while alpha particles are positively charged

B. Positive rays are faster than alpha particles

C. Positive rays are heavier than alpha particles

D. Positive rays are more radioactive than alpha particles

5. How are positive rays produced in a cathode ray tube?

A. By the collision of electrons with a metal target

B. By the collision of protons with a metal target

C. By the collision of alpha particles with a metal target

D. By the collision of gamma rays with a metal target

6. What is the name of the phenomenon where a positron and an electron annihilate each other and produce gamma rays?

A. Positron emission

B. Electron capture

C. Positron-electron annihilation

D. Gamma ray production

7. What is the main use of positive rays in medical imaging?

A. To diagnose cancer

B. To detect bone fractures

C. To visualize blood vessels

D. To monitor the progress of a pregnancy

8. What is the difference between a positive ray and a gamma ray?

A. Positive rays are composed of protons, while gamma rays are composed of photons

B. Positive rays are produced by radioactive decay, while gamma rays are produced by nuclear reactions

C. Positive rays are absorbed by lead, while gamma rays can pass through lead

D. Positive rays are composed of electrons, while gamma rays are composed of positrons

9. How are positive rays detected?

A. By their ability to ionize gases

B. By their ability to cause a fluorescence in certain materials

C. By their ability to produce a visible light

D. By their ability to produce a sound

10. What is the energy of a positive ray?

A. It is variable and depends on the source

B. It is always the same

C. It is always lower than that of a gamma ray

D. It is always higher than that of an alpha particle












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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.