1. ‘1-3-7 strategy’ often seen in news is related to which of the following?
[A] To boost daily productivity at work
[B] To amplify chances of winning a bet in casinos
[C] To prevent malaria
[D] To combat climate change
Show Answer
Correct Answer: C [To prevent malaria]
Notes:- China’s 1-3-7 Strategy: The strategy refers to:
- A one-day deadline to report a malaria diagnosis,
- Confirming a case and determining the spread by the third day, and
- Measures taken to stop the spread by the seventh day, along with continued surveillance in high-risk areas.
2. Consider the following statements regarding SNAP-10A:
- It was the world's first operational nuclear reactor in space.
- It was launched by Russia.
- It is the only known nuclear reactor in space.
Which of the above statements is / are correct?
[A] Only 2
[B] Only 1 and 2
[C] Only 1 and 3
[D] 1, 2 and 3
Show Answer
Correct Answer: C [Only 1 and 3]
Notes:
SNAP-10A, launched by the United States in 1965, was the world's first operational nuclear reactor in space and is the only known U.S. nuclear reactor placed in space. Statement 1 and 3 are correct. Statement 2 is incorrect because it was not launched by Russia, but by the U.S.
3. ‘Einstein tile’ or ‘the hat’ was in news recently, it is used in terms of:
[A] Use and proliferation of nuclear weapons.
[B] Quantum Entanglement
[C] Thirteen sided aperiodic monotile
[D] Bell’s inequalities
Show Answer
Correct Answer: C [Thirteen sided aperiodic monotile]
Notes:- Several ways of tiling exists in nature and the real world like bathroom tiles or the hexagons of honeycomb. All of these are periodic and have a translation symmetry, i.e., the size, shape and angle remains the same, only the location changes.
- The 13-sided ‘hat’ discovered is also a shape that tiles plane, however, it does not possess translational symmetry. These types of shapes are called aperiodic tile sets.
- It is the first ‘Einstein’ tile to have been found. The ‘Einstein’ tile is an aperiodic monotile.
- ‘Einstein’ tile is a shape that can cover a plane without overlapping, leaving gaps, or repeating patterns. The tile has no connection with Albert Einstein.
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