Practise Discoveries & Invention MCQs in Everyday Science. Attempt multiple-choice questions, check answers and revise related subtopics.
Study Discoveries & Invention through multiple-choice questions in Everyday Science. This subtopic contains 310 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.
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ریڈیم کس نے دریافت کیا؟
Answer: Marie Curie
Explanation Radium is a chemical element with the symbol Ra and atomic number 88.
بائیو سینسر کس چیز کی پیمائش کے لیے استعمال کیا جاتا ہے؟
Answer: Blood glucose level
Explanation A biosenso r is a sensor exploiting a bio-molecule It is used to measure the presence of a certain substance in a liquid. Additional information: For example, biosensors include those used to detect viruses in the blood or measure glucose levels in the blood. These are mainly point-of-care applications , where direct results are important.
کس نے بیکٹیریا دریافت کیا؟
Answer: Antonie van Leeuwenhoek
Explanation Antonie van Leeuwenhoek is credited with the discovery of bacteria . In 1676 , using a primitive microscope, he observed and described microorganisms . Including bacteria and protozoa , which he referred to as " animalcules ".
ہوا کی قوت / رفتار کو ماپنے کا آلہ کون سا ہے؟
Answer: Anemometer
Explanation An anemometer is an instrument that measures wind speed. This type of anemometer has a spinning wheel. Additional Information: A hygrometer is an instrument used to measure humidity A salinometer is used to measure the salinity A bolometer is used to measure the power of incident electromagnetic radiation A barometer is used to measure air pressure in certain environment .
Answer: English
Explanation He discovered the laws of gravity and three laws of motion and invented calculus . سر آئزک نیوٹن ایک انگریز طبیعیات دان، ریاضی دان، ماہر فلکیات، فلسفی اور کیمیادان تھے جن کا شمار تاریخ کی انتہائی اہم شخصیات میں ہوتا ہے
Answer: 60%
Explanation 6 0% is the proportion of water to total body weight in a normal person *** The amount of water in the body changes slightly with age, sex, and hydration levels. While the average percentage of water in a person's body is around 60%, the percentage can vary from roughly 45–75%. According to Mitchell and others (1945 )
مائکروسکوپ _____ کا مطالعہ کرنے کے لئے استعمال ہوتا ہے؟
Answer: Small and near objects
Explanation A microscope is designed to magnify tiny, close-up objects that are not visible to the naked eye. It helps in studying small details of specimens like cells, microorganisms, and other minute structures.
چارج شدہ ذرات کی بیم کو تیز کرنے کے لیے کیا استعمال کیا جاتا ہے۔
Answer: Cyclotron
Explanation A cyclotron is a machine that accelerates charged particles or ions to high energies. It was invented to investigate the nuclear structure by E.O Lawrence and M.S Livingston in 1934.
Answer: 1874
Explanation Joseph F. Glidden was born in New York on Jan. 18, 1812. He invented barbed wire in 1873 and was granted the patent on Nov. 24, 1874. Gidden known as the " Father of Barbed Wire".
Answer: : None of these
Explanation The punishment for doctors may be extended to five years with fine
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