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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ڈیجیٹل کیمرہ ____ نے ایجاد کیا تھا؟
Answer: Steven Sasson
Explanation The first digital camera was invented by Steven Sasson , an engineer at Eastman Kodak, in 1975. Sasson's camera used a monochrome Fairchild CCD image sensor. It was the first self-contained electronic camera.
کس نے دریافت کیا کہ سیارے بیضوی مدار میں گھومتے ہیں؟
Answer: Johannes Kepler
Explanation Johannes Kepler was an astronomer belonged to Germany .
امریکہ کے بعد 15 مئی 2021 کو کس ملک نے کامیابی سے مریخ کی سطح پر روبوٹ اتارا ہے؟
Answer: China
Explanation China has successfully landed a robot on the surface of Mars on 15 May 2021. China has become the third country after Russia and the United States of America in history The rover ' Zhurong ' will spend around 90 Martian days on the planet. A Martian day is around 24 hours and 39 minutes. This rover is named after the mythical Chinese god of fire.
Answer: 1984
Explanation On May 4th, 1984 four papers by Robert C. Gallo's group were published in Science describing a new human retrovirus virus as the probable cause of AIDS.
تابکاری کو کس نے دریافت کیا تھا؟
Answer: Henry Becquerel
Explanation Radiation was discovered by Henri Becquerel in 1896 . When he observed that uranium salts emitted rays that could fog photographic plates. It leading to the study of radioactivity .
قطب شمالی کو کس نے دریافت کیا؟
Answer: Robert Peary
Explanation Robert Peary became the first person to reach the North Pole in 1909 . Robert Peary was an American explorer. The North Pole of the Earth is located in Arctic Ocean. Distance from south to North Pole is called Longitude .
Answer: Oxygen
Explanation Joseph Priestly discovered oxygen on August 1, 1774. The most abundant element in the Earth's crust is oxygen , making up 46.6% of Earth's mass
ملیریا کی وجہ کس نے دریافت کی؟
Answer: Ronald Ross
Explanation The discoverer of the cause of Malaria is Ronald Ross Alphonse Laveran, a French army doctor , described the malarial parasite-- And proposed that it caused malaria in 1880 .
ریڈیو ایکٹیویٹی کو ________ نے دریافت کیا تھا؟
Answer: Bacquerel
Explanation Radioactivity was discovered by Henri Becquerel in 1896. They discovered radioactivity proving that the uranium emitted radiation without an external source of energy such as the Sun Marie Curie with her husband Pierre Curie, coined the term radioactivity. In 1903, Henry Becquerel shared the Nobel Prize for Physics with Pierre and Marie Curie Ernest Rutherford did many experiments studying the properties of radioactive decay (alpha, beta, and gamma)
مارٹی کوپر اپنی کونسی ایجاد کے لیے جانا جاتا ہے۔
Answer: Mobile Phone
Explanation Martin Cooper built the first mobile cell phone and made the first cell phone call . Martin Cooper is widely regarded as the father of the cellular phone . On April 3, 1973, Martin Cooper made the first ever cellphone call on th e streets of New York. Martin Cooper's invention , a brick-sized device, became the first cellphone available to the general public . ND28-4-2023
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