Which country first used submarines in World War I?

Explanation: Germany’s U-boats were used extensively in World War I naval warfare.

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Q: Most of the fresh water on earth is tied up in a solid form. what are they called?
Ans: glaciers

Q: What mineral is used in jewelry because of its striking greenish-blue color?
Ans: turquoise

Q: If the average of five numbers is 20 and three sum to 50
Ans: what is the average of the other two?

Q: Foodborne illness, food allergies, or a food intolerance cause symptoms in what system?
Ans: skeletal

Q: Club mosses, horsetails, ferns, and whisk ferns are examples of what type of plants?
Ans: angiosperms

Q: A hookworm is classified as what type of organism?
Ans: parasite

Q: What is the function of the fuel filter in a vehicle?
Ans: Removes impurities from fuel

Q: Which of these is a biodegradable material?
Ans: Food waste

Q: The relationship between a nucleotide codon and its corresponding amino acid is called what?
Ans: protein

Q: What is the rule for driving in a residential area?
Ans: Reduce speed to 40 km/h

Q: Who has created a new world record for lowest limb skating on April 21, 2024?
Ans: Takshavi Vaghani

Q: Skeletal muscles are attached to the skeleton by tough connective tissues called what?
Ans: cords

Q: In Sharanghadhara Samhita, the proportion for Anna Kalpana is:
Ans: 1 part grain, 5 parts water

Q: Which country partially joined Europe's Schengen area on April 1, 2024?
Ans: Romania and Bulgaria

Q: Which Indian state leads in hydroelectric power?
Ans: Himachal Pradesh