Science & Technology GK — Practice Quiz (Set 5)By sushil / October 6, 2026 Science & Technology GK — Practice Quiz (Set 5) 10 questions · 15 minute time limit Start Quiz You can take this quiz as a guest. Log in first if you want it saved to your progress history. Which part of the human cell is known as the u2018powerhouseu2019 because it generates energy in the form of ATP? Mitochondria Nucleus Ribosome Golgi apparatus Which part of the human eye controls the amount of light entering it by adjusting the size of the pupil? Iris Cornea Retina Lens Which law states that for every action, there is an equal and opposite reaction? Newtonu2019s Third Law of Motion Newtonu2019s First Law of Motion Law of Conservation of Energy Ohmu2019s Law Which blood type is often referred to as the u2018universal donoru2019? O negative AB positive A positive B negative What is the process by which plants lose water vapor through small pores in their leaves called? Transpiration Respiration Photosynthesis Osmosis Which type of computer memory retains data even after the power is switched off? Non-volatile memory (e.g., ROM, flash) RAM Cache memory Register memory Which gas, essential for respiration, makes up approximately 21% of Earthu2019s atmosphere? Oxygen Nitrogen Carbon dioxide Hydrogen Which scientist formulated the theory of general relativity? Albert Einstein Isaac Newton Galileo Galilei Niels Bohr What is the unit used to measure the frequency of a wave? Hertz Newton Joule Watt Which vitamin deficiency is commonly associated with the disease scurvy? Vitamin C Vitamin D Vitamin B12 Vitamin K Submit Quiz
