Q.1) Consider the following statements about Tethered Drones:
1. They are ground-based unmanned aerial aircraft.
2. They have longer flight times than free-flying, battery-powered drones.
3. They must have GPS navigation to function.
How many of the statements given above are correct?
A) Only one
B) Only two
C) All three
D) None

Q.2) Takahe, a flightless bird recently noticed in the news, is native to:
A) India
B) Japan
C) New Zealand
D) Australia

Q.3) Consider the following statements about the Scheme for Promoting Research and Innovation in the Pharma-MedTech Sector (PRIP):
1. It intends to foster industry-academia collaboration in R&D in the pharmaceutical business.
2. It will establish Centers of Excellence (CoE) within existing national research institutes.
Which of the above statements is/are correct?
A) 1 only
B) 2 only
C) Both 1 and 2
D) Neither 1 nor 2

Q.4) With reference to Walking Leaves, consider the following statements:
1. They are insects that live in densely forested places and feed on plants.
2. Walking leaves, both male and female, can fly considerable distances.
3. Their arms and legs can regenerate.
How many of the statements given above are correct?
A) Only one
B) Only two
C) All three
D) None

Q.5) Consider the following statements regarding the GREAT scheme:
1. It provides momentum for the development of India's technical textile startup ecosystem.
2. The Union Ministry of Textiles would supply the complete funding under it.
Which of the statements given above is/are correct?
A) 1 only
B) 2 only
C) Both 1 and 2
D) Neither 1 nor 2

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Answer: B
AR4 Tech recently teamed with Singapore-based Sodion Energy to manufacture sodium-ion battery packs for domestic and overseas markets. These batteries create electricity via a chemical reaction. These consist of an anode, a cathode, a separator, and an electrolyte. Lithium ions are replaced with sodium ions in the cathode of a sodium-ion battery, and lithium salts are replaced with sodium salts in the electrolyte.
When the battery is charged, Na atoms in the cathode release electrons to the external circuit, forming ions that migrate through the electrolyte to the anode, where they combine with electrons from the external circuit while reacting with the layered anode material. During discharge, the same procedure is reversed.
The Advantages of Sodium Batteries
• Easily accessible: One of the most intriguing elements of this technology is the abundance of its basic raw materials in nature.
• Safety: Because cells based on this chemical element are neither combustible nor vulnerable to explosions or short circuits, sodium batteries provide excellent levels of safety.
• Low cost: Because the basic ingredients are widely available in nature and can be harvested at low cost and with little energy use, sodium is a substance with a low environmental impact.
• Resistance to low temperatures. Statements 1 and 2 are correct.

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