Explanation:
India’s cumulative COVID-19 vaccination drive crossed the milestone of 200-crore doses on Sunday. It took the country almost nine months to reach the 100-crore vaccination mark and another nine months to the 200-crore milestone. Only 3.8% of India’s population have got the third (booster) dose, compared with the world average of 27.5%.

Explanation:
D. Gukesh, the 16-year-old Grandmaster from Chennai, became only the sixth Indian to reach and cross the coveted 2700 ELO ratings mark in chess. World champion Magnus Carlsen had attained a FIDE rating of 2700 when he was 16 and a half years old.

Explanation:
The Navy’s Kilo class submarine INS Sindhudhvaj was decommissioned from service on Saturday at Visakhapatnam after 35 years in service. With this, the Navy now has 15 conventional submarines in service. The Navy’s sub-surface fleet now includes seven Russian Kilo class submarines, four German HDW submarines, four French Scorpene submarines and the indigenous nuclear ballistic missile submarine Arihant.

Iranian police have arrested several people over their protest against the drying up of a lake once regarded as the West Asia’s largest. Lake Urmia began shrinking in 1995 due to a combination of prolonged drought, and extraction of water for farming and dams.

Customers will have to pay a 5% Goods and Services Tax (GST) on pre-packed, labelled food items such as atta, paneer and curd, besides hospital rooms with rents above ₹5,000, starting from Monday.