Daily UPSC Prelims Current Affairs – April 28, 2023 [Mock test]
May 19, 2023 May 19, 2023
1. Which of the following is/are correct regarding the first Constitutional Amendment Act, 1951?
- Grounds on which the State could restrict free speech are expanded.
- Article 31A was inserted, creating the Ninth Schedule to the Constitution.
- Citizenship as eligibility criteria for certain posts is included in part two of the Constitution.
- Article 15 of Fundamental Rights was amended.
Choose the correct answer using the codes given below:
[A] Only 1
[B] Only 1, 2 & 4
[C] Only 2, 3 & 4
[D] Only 1, 2, 3 & 4
Show Answer
Correct Answer: B [Only 1, 2 & 4]
Notes:- The first Amendment Act was enacted during the tenure of Pt. Jawaharlal Nehru.
- Article 19 of Fundamental Rights was amended to expand the grounds on which the State could restrict free speech in interests of the sovereignty and integrity of India.
- Article 15 of Fundamental Rights was amended to allow the State to reserve seats in educational institutions for the Scheduled Castes and Tribes.
- Article 31A was inserted, creating the Ninth Schedule to the Constitution.
- Article 376 was amended to make ‘Citizen of India’ as an eligibility criteria for appointment as Chief Justice of such High Court, or as Chief Justice or other Judge of any other High Court.
2. With reference to the Solar Dynamics Observatory, consider the following statements:
- It was launched by NASA in 2010.
- It is the first satellite in the NASA’s Living with a Star program, which studies space weather.
- It carries Helioseismic and Magnetic Imager (HMI), Atmospheric Imaging Assembly (AIA), and Extreme Ultraviolet Variability Experiment (EVE).
Which of the statements given above is/are correct?
[A] Only 1
[B] Only 3
[C] Only 1 & 2
[D] 1, 2 & 3
Show Answer
Correct Answer: D [1, 2 & 3]
Notes:- NASA launched Solar Dynamics Observatory (SDO) in 2010.
- SDO is the first satellite in the NASA’s Living with a Star program, which studies space weather.
- SDO studies how solar activity happens and how that impacts the Earth’s magnetosphere.
- SDO takes observations of the Sun’s interior, surface and atmosphere.
- SDO carries three instruments: Helioseismic and Magnetic Imager (HMI), Atmospheric Imaging Assembly (AIA), and Extreme Ultraviolet Variability Experiment (EVE).
3. Piezoelectric crystals are used in:
- Electric guitars
- TV remote controls
- Audio transducer
- Cigarette lighters
Choose the correct answer using the codes given below:
[A] Only 1
[B] Only 2 & 3
[C] Only 1, 3 & 4
[D] 1, 2, 3 & 4
Show Answer
Correct Answer: D [1, 2, 3 & 4]
Notes:- Piezoelectric effect is a phenomenon where specific types of material produce an electric charge proportional to the mechanical stress applied to them.
- The piezoelectric effect was discovered in 1880, in quartz.
- Quartz, topaz, etc. are few examples of piezoelectric crystals.
- Such crystals are used in cigarette lighters, electric guitars, TV remote controls, audio transducer.
- Quartz is the most famous piezoelectric crystal which is used in this capacity in analog wristwatches and clocks.
