Option (b) is correct

Explanation:

• INS Kavaratti, indigenously designed & built ASW Corvette, arrived at Batam, Indonesia to participate in the 4th edition of India-Indonesia Bilateral exercise Samudra Shakti-23.
• Exercise Samudra Shakti is aimed at enhancing interoperability, jointness and mutual cooperation between both the navies.

Option (d) is correct

Explanation:

• Salim Ali Lake is located in Aurangabad, Maharashtra which has been renamed in honour of Salim Ali, a famous naturalist and ornithologist who is also referred to as the birdman of India.
• Once a flourishing natural water body, Badkhal Lake of Haryana was a famous attraction for boating, bird watching and other recreational activities. The lake no longer exists as the water has dried up due to excessive mining.
• Recently, a Nature walk was organised along Palak Lake in Mizoram. This Palak Lake is the largest natural lake in Mizoram.

Option (c) is correct

Explanation:

• • Both the given statements are correct. 
  • Recently, NASA’s James Webb Space Telescope uncovered a complex and fascinating asteroid around the young star Fomalhaut.

• Fomalhaut was one of the first exoplanets ever discovered in visible light by NASA’s Hubble Space Telescope in 2004. 

• • Fomalhaut is one of the brightest stars in the night sky and is the brightest star in the southern Piscis Austrinus constellation, which is 25 light years away from Earth.
• Exoplanets are the planets that orbit around stars other than the Sun.

Option (d) is correct

Explanation:

• • Both the given statements are correct. 
  • Operation Smiling Buddha or Operation Happy Krishna was the assigned code name of India’s first successful nuclear bomb test on 18 May 1974.
  • The bomb was detonated on the army base Pokhran Test Range (PTR), in Rajasthan, by the Indian Army under the supervision of several key Indian generals.
• It made India the first country outside of the five permanent members of the United Nations Security Council to conduct a nuclear test.

Option (b) is correct

Explanation:

• In the offspring, the mitochondrial genes are inherited from the mother. Thus, a father with mitochondrial gene defect cannot transmit the disease to his offspring. 
• Mitochondrial diseases are a group of rare, heterogeneous diseases caused by gene mutations in both nuclear and mitochondrial genomes that result in defects in mitochondrial function.
• Mitochondrial diseases have no cure, but can be treated. 

Option (c) is correct

Explanation:

• Millets are fundamentally grasses. 
• They are cultivated worldwide, but especially in the tropical parts of Africa and Asia, as cereal crops. 
• Some of the more common varieties include pearl millet (Cenchrus americanus), barnyard millet (Echinochloa utilis), finger millet (Eleusine coracana), and foxtail millet (Setaria italica).
• Millets have two broad features that render them attractive — their nutritional value being comparable to that of major extant food crops (and better on some counts) and their ability to reliably withstand harsh, resource-poor conditions.