India’s first underwater metro was inaugurated in which city?

Explanation: Kolkata became the first city in India to operate an underwater metro.

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Q: What ingredient has been used in brewing, winemaking and baking for thousands of years?
Ans: yeast

Q: What type of pressure is the amount of force that is exerted by gases in the air surrounding any given surface?
Ans: atmospheric

Q: A patient with chronic limb ischemia requires revascularization. Which advanced procedure is indicated?
Ans: Femoral-popliteal bypass

Q: Where did GAIL (India) Limited start India's first green hydrogen plant on 29 May 2024?
Ans: Madhya Pradesh

Q: Elements have orbitals that are filled with what?
Ans: electrons

Q: For whom will three thousand special trains be operated in 2025?
Ans: Prayagraj Mahakumbh Mela

Q: What converters are used on motor vehicles to break down pollutants in exhaust to non-toxic compounds?
Ans: catalytic converters

Q: Gases have no definite shape or what?
Ans: volume

Q: Which Foundation Day of CSI was celebrated on 26 September?
Ans: 83rd

Q: A glacier is an example of h20 in which state of matter?
Ans: solid

Q: Most protein antigens require signals from helper t cells (th2) to proceed to make what?
Ans: antibody

Q: What was the consumer confidence index in February 2025, per The Conference Board?
Ans: Dropped sharply

Q: What do you call a quantity of motion that has both size as well as direction?
Ans: speed

Q: Which city was named a UNESCO City of Literature in 2024?
Ans: Kozhikode

Q: Whose 86th Foundation Day was celebrated on July 27, 2024?
Ans: CRPF