Topic 1 : China launches first nuclear-powered guided missile submarine

Why in news: China has launched its first nuclear-powered guided missile submarines giving it land and sea attack options.

Key details:

About Cruise missile submarines:

Why in news: Bengaluru: The use of wastewater to grow vegetables has led to a higher concentration of heavy metals in them, with researchers finding contamination above the permissible limits set by the Food and Agriculture Organisation (FAO).

Key details:

Key findings of the researchers:

Way forward:

Why in news: Pakistan launches Ghauri ballistic missile in test of readiness.

Key details:

Why in news: China and Bhutan held their 25th round of boundary talks in Beijing and signed a Cooperation Agreement on the “Responsibilities and Functions of the Joint Technical Team (JTT) on the Delimitation and Demarcation of the Bhutan-China Boundary.”

Key details:

What is the 3-Step Roadmap?

Significance for India:

Why in news: Eight former Indian Navy personnel have been sentenced to death by a court in Qatar.

Key details:

Nature of the relationship between India and Qatar

Challenges in the relationship:

Topic 6 : Osteoporosis

Why in news: Though there are no large-scale studies on osteoporosis in India, projected data shows that at least 46 million women in India currently live with post-menopausal osteoporosis, which is only one type of osteoporosis.

About Osteoporosis:

Indian scenario:

Why in news: Looking at Tamil Nadu’s past, a caste census alone may not lead to increased other backward class (OBC) reservations.

Backward commissions in Tamil Nadu:

About the Second BC Commission:

Highlights of the Commission’s work:

Recommendations of the Commission:

How did the 1992 Supreme Court judgment affect State reservations?

Why in news: Long before the city of Jerusalem became one of the world’s most contested places (Israel and Palestine), India established its presence there in the 12th century.

Key details:

How did this connection come to be?

Who was Baba Farid?

How did the lodge get associated with independent India?

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