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: Coal, oil, and natural gas are examples of what, which forms when organic matter is under pressure for millions of years?
Ans: fossil fuels

Q: A blood examination shows megaloblastic anemia with low folate. Which condition is most likely?
Ans: Folate deficiency anemia

Q: Which tool was used for harvesting crops?
Ans: Sickle

Q: Often generated by molecular cloning, transgenic organisms possess what from a different species?
Ans: RNA

Q: In which state was an alert issued due to cyclone 'Asana' on August 30, 2024?
Ans: Gujarat

Q: Which Harappan site had a dockyard?
Ans: Lothal

Q: Which fluid is used in a vehicle’s hydraulic brakes?
Ans: Brake fluid

Q: When electrons from two atoms are each attracted to the nucleus of the other atom, what type of bond is formed?
Ans: covalent bond

Q: What is the standard compression to ventilation ratio for CPR in adults?
Ans: 30:2

Q: Organisms that live deep in the ocean must be able to withstand what?
Ans: tsunamis

Q: What is another name for the vertebral column?
Ans: brain stem

Q: What is the primary source of energy for Earth’s climate system?
Ans: Solar radiation

Q: In modern surgery, which condition is treated with a lobectomy?
Ans: Lung cancer

Q: 6 heritage sites of which state were added to UNESCO's temporary list on March 23, 2024?
Ans: Madhya Pradesh

Q: What arises due to crossing over, independent assortment, and the random union of gametes?
Ans: alternative variation