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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کشش ثقل ______ کے ذریعہ دریافت ہوا؟
Answer: Isaac Newton
Explanation Isaac Newton formulated the law of universal gravitation , explaining how gravity works. He famously described gravity after observing an apple fall from a tree .
Answer: Enzymes
Explanation Snake venom is Enzymes ** Snake venoms are cocktails of enzymes and non-enzymatic proteins used for both the immobilization and digestion of prey. Snake venom is a complex mixture of enzymes, proteins, amines, lipids, nucleosides, and carbohydrates. There are over 30 enzymes that have been identified in snake venoms (Table 3) including some that are common to all venomous snake families
ایچ آئی وی کی شناخت کب ہوئی؟
Answer: 1983
Explanation HIV (Human Immunodeficiency Virus) was first identified in 20 May 1983 By researchers Luc Montagnier and Françoise Barré-Sinoussi in France. Their discovery linked HIV to AIDS , leading to significant advancements in understanding and managing the disease.
ماس کا تحفظ تب حاصل ہوتا ہے جب ری ایکٹنٹس کا کل ماس مندرجہ ذیل میں سے کسی ایک کے کل کمیت کے برابر ہو
Answer: Product
Explanation According to the law of conservation of mass, the mass of the reactants must be equal to the mass of the products for a low-energy thermodynamic process. This means there is no change in mass during a chemical reaction. ND2-03-2023
نئی دریافت ہونے والی کہکشاں کا نام کیا ہے جو اپریل 2022 میں دریافت ہونے والی سب سے قدیم اور دور دراز کی کہکشاں ہو سکتی ہے؟
Answer: HD1
Explanation Most distant astronomical object ever detected by Center for Astrophysics,Harvard and Smithsonian. HD1 : galaxy candidate 13.5 billion light-years away
سیٹرن راکٹ کو خلاء میں کہاں روانہ کیا گیا۔
Answer: NASA United States
Explanation Saturn V is a retired American super heavy-lift launch vehicle developed by NASA The rocket was human-rated , with three stages , and powered with liquid fuel. It was flown from 1967 to 1973. It was used for nine crewed flights to the Moon , and to launch Skylab , the first American space station . As of 2023 , the Saturn V remains the only launch vehicle to carry humans beyond low Earth orbit (LEO). *** The father of Rocketry especially the Saturn V Rocket which make a successful moon landing was: Dr Warner Von Braun ND28-4-2023
Answer: 3.5% Sodium Citrate
Explanation Anticoagulant of choice for coagulation test 3.5% Sodium Citrate *** The actual value of Sodium Citrate should be 3.13% to 3.5% *** EDTA is useful for hematologic tests because it preserves blood cells better than other similar agents , whereas sodium citrate is useful as a coagulation test agent since factors V and VIII are more stable in this substance
چونکہ پینسلن پیپٹائڈوگلیان کی ترکیب کو روکتی ہے، یہ ___________ خلیات پر زیادہ موثر ہے۔
Answer: Gram Positive
Explanation Penicillin works best on gram-positive bacteria by inhibiting peptidoglycan production, making the cells leaky and fragile The cells burst open and are much easier for the immune system to break down, which helps the sick person heal more quickly. ** Related Question Penicillin was discovered by Alexander Flaming In 1928 Penicillin was the f irst true antibiotic ND04-08-2023
تاریخ کا باپ کس کو کہا جاتا ہے؟
Answer: Herodotus
Explanation Herodotus is called the Father of History . Additional information : Born: 484 BC , Halicarnassus (modern-day Bodrum, Turkey) Died: 425 BC , Thurii, Italy Famous Work: Histories – detailed accounts of Greco-Persian Wars Contribution: First to collect, verify, and narrate historical events systematically Last verified on 18-01-2026
روشنی کی رفتار کا تعین سب سے پہلے کس نےکیا تھا۔
Answer: Ole Romer
Explanation Ole Rømer , an astronomer from Denmark made the first quantitative measurements of the speed of light in 1676 .
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