Discoveries & Invention MCQs - Everyday Science Practice | PakExamPoint

Practise Discoveries & Invention MCQs in Everyday Science. Attempt multiple-choice questions, check answers and revise related subtopics.

Discoveries & Invention MCQs and revision practice

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.

Use these Discoveries & Invention MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.

Continue your revision with related topics: 100 Most Repeated MCQs of EDS PDF MCQs, Alloy MCQs, Atmosphere MCQs, Basics of Every Day Science EDS MCQs, Biology MCQs, Botany MCQs, Branch of Science MCQs, Cell MCQs.

Return to all Everyday Science topics to choose your next area of study. Read the MCQ study guide to plan your revision, or try a Everyday Science practice quiz.

Discoveries & Invention: questions and answer review

Try each question before opening its answer. Record the concept behind each mistake and revisit it during your next practice session.

11. Structure of DNA was discovered by James Watson and Francis Crick in _____?

ڈی این اے کی ساخت کو جیمز واٹسن اور فرانسس کرک نے _____ میں دریافت کیا تھا؟

Check answer and explanation

Answer: 1953

Explanation Structure of DNA was discovered by James Watson and Francis Crick in 1953. They discovered the double-helix structure of DNA using X-ray crystallography data. Their discovery revealed the double-helix structure of DNA , where two complementary strands are twisted together with sugar and phosphate molecules, and the nitrogenous bases (adenine, thymine, cytosine, and guanine) pair in a specific manner.

12. What was one of the first major inventions of Jabir bin Hayyan?

Check answer and explanation

Answer: Sulfuric acid

Explanation Jabir bin Hayyān (Jabir ibn Hayyan), known as the father of early chemistry, He was credited with the first preparation of sulfuric acid (H₂SO₄) in the Islamic Golden Age

13. Name the instrument used to examine digestive tract of a patient

Check answer and explanation

Answer: Endoscope

Explanation An endoscope is an inspection instrument composed of image sensor, optical lens, light source and mechanical device, which is used to look deep into the body.

14. Einstein's famous equation which states that mass and energy are interchangeable is:

Check answer and explanation

Answer: E=mc2

Explanation Ass times the speed of sunshine square. " On the foremost basic level , the equation says that energy and mass (matter) square measure interchangeable ; they're completely d ifferent kinds of a similar issue .

15. Famous social website Facebook was founded by ____?

مشہور سماجی ویب سائٹ فیس بک کس نے قائم کی؟

Check answer and explanation

Answer: Mark Zekerburg

Explanation Founder: Mark Zuckerberg Founded in: February 4, 2004 Headquarters: Menlo Park, California, USA Users (2023): Over 3 billion monthly active users Parent Company : Meta Platforms Inc. Last verified on 16-01-2026

16. Who used telescope first time in the history to observe Jupiter, Saturn and Venus?

تاریخ میں سب سے پہلے دوربین استعمال کر کے مشتری، زحل اور زہرہ کا مشاہدہ کس نے کیا؟

Check answer and explanation

Answer: Galileo - Galilei

Explanation The telescope was first used for astronomical observations in the early 17th century. Galileo Galilei first used an improved telescope in 1609 to observe planets like Jupiter, Saturn, and Venus . He discovered four large moons of Jupiter (Io, Europa, Ganymede, and Callisto). Last verified on 11-03-2026

17. Ephedrine blocks which receptors:

Check answer and explanation

Answer: Both Alpha & Beta

Explanation Ephedrine blocks which receptors: Both Alpha & Beta *** Ephedrine is a synthetic non catecholamine agonist at α, β1, and β2 receptors with both direct and indirect actions. Ephedrine is given as an intravenous bolus of 5 to 10 mg. It is effective in the same dose range when administered intramuscularly, albeit with slower onset and longer duration.

18. Who is regarded as the Father of Modern Chemistry?

جدید کیمسٹری کا باپ کس کو کہا جاتا ہے؟

Check answer and explanation

Answer: Lavoisier

Explanation The f ather of Modern Chemistry is known as Antoine Lavoisier 1743 → Born in Paris, France 1770s → Began major experiments on combustion 1789 → Published Elementary Treatise of Chemistry 1794 → Died during the French Revolution Last updated by NA on 23-April-2026

19. Chloroforms' was discovered by whom?

Check answer and explanation

Answer: James simpson

Explanation James Simpson, a Scottish doctor, is credited with discovering the anesthetic properties of chloroform in 1847

20. Researchers discovered the world's deepest known blue hole at which place?

محققین نے دنیا کا سب سے گہرا بلیو ہول کس مقام پر دریافت کیا؟

Check answer and explanation

Answer: Mexico

Explanation Researchers discovered the world's deepest known blue hole in Mexico . The blue hole is named as ' Tam Ja Blue Hole (TJBH) . Taam Ja' Blue Hole is the deepest known underwater sinkhole in the world, researchers have discovered — and they haven't even reached the bottom yet. ***

Found a mistake? Use “Report correction” in the practice tool or contact us with the question and a supporting source.