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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الٹراساؤنڈ لہروں کی تعدد عام ہے؟
Answer: Above 20 kHz.
Explanation Ultrasound is sound with frequencies greater than 20 kilohertz. This frequency is the approximate upper audible limit of human hearing in healthy young adults while The first article on the history of ultrasound was written in 1948 ND18-2-2023
نیل بوہر نے ایٹم ۔۔۔ دیا؟
Answer: model
Explanation In the year 1913 , Niels Bohr proposed an atomic structure model , describing an atom as a small, positively charged nucleus
Answer: Hertz
Explanation The photoelectric effect was discovered by German physicist Heinrich Rudolf Hertz in 1887
Answer: Renal Function Tests
Explanation if carbamazepine is prescribed one should monitor Renal Function Tests *** Carbamazepine is a medicine used for Epilepsy treatment.
کرونومیٹر ___ کس نے ایجاد کیا؟
Answer: John Harrison
Explanation Portable timekeeping device of great accuracy, particularly one used for determining longitude at sea In 1735
فلکیات کس کا مطالعہ ہے؟
Answer: All of these
Explanation Astronomy is the study of everything in the universe beyond Earth's atmosphere Galileo Galilei is often referred to as the "father of modern astronomy " and the "father of modern physics".
پہلا زندہ سیل کس نے دریافت کیا؟
Answer: Robert Hooke
Explanation Robert Hooke , a 17th-century philosopher and scientist. He was the first to use the word " cell " to describe a basic unit of life. A cell is the smallest unit that can live on its own. Cells make up all living organisms and the tissues of the body.
پلاسٹر آف پیرس کو گرم کرکے کیا تیار کیا جاتا ہے
Answer: Gypsum
Explanation Plaster of Paris is made by heating the mineral gypsum. When gypsum is heated to about 150°C it losses water and produces the powder of plaster of Paris.
متواتر جدول کس نے دریافت کیا؟
Answer: Dmitri Mendeleev
Explanation Discoverer: Dmitri Mendeleev, a Russian chemist. - Year: 1869 Mendeleev’s periodic law states: “ The properties of elements are a periodic function of their atomic masses .” - The modern periodic table is based on atomic number (not atomic mass) , but Mendeleev’s work was crucial. - His table helped organize chemical knowledge and predict new elements.
سر الیگزینڈر فلیمنگ نے پینسلن کیسے دریافت کی؟
Answer: By testing plant extracts on infections
Explanation Sir Alexander Fleming noticed that a mold called Penicillium notatum accidental ly grew in one of his petri dishes and killed the surrounding Staphylococcus bacteria Penicillin was discovered by Alexander Flaming In 1928. Penicillin was the f irst true antibiotic. The first patient Albert Alexander, a 43-year-old policeman , was treated with penicillin on 12 February 1941. Alexander Flaming determined that penicillin had an antibacterial effect and published his findings in 1929.
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