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Practice modes

QuizzesTimed quizzes by country and subject
MCQsAnswer MCQs with instant explanations
Mixed PracticeBuild your own test across subjects

Popular subjects

Pakistan AffairsHistory, constitution and more
World AffairsWorld history and global politics
Current AffairsNew questions from the news daily
EnglishGrammar, vocabulary and usage
SciencePhysics, chemistry and biology
MathematicsArithmetic, algebra and more

Browse all quizzes

Languages & Literature

EnglishGrammar, tenses, vocabulary and usage
Urdu (اردو)Grammar, literature and poetry, in Urdu
Literature of PakistanPoets and writers of six languages
World PoetsGreat poets from across the world
Books & AuthorsWho wrote what, and why it matters

Pakistan

Pakistan AffairsHistory, constitution, geography, firsts
Quaid's 14 PointsJinnah's Fourteen Points of 1929
CivicsThe state, rights, constitution and the UN
Governance & Public PolicyGood governance, policy, bureaucracy
Rulers & LeadersFrom Muhammad bin Qasim to today
Nature of PakistanSymbols, wildlife and national parks
Important DaysNational and international days

World & History

World KnowledgeCountries, wonders and great wars
World OrganizationsUN, OIC, SCO and more
Treaties & AgreementsKey treaties and their significance
PhilosophersWestern and Muslim thinkers
Global IssuesSDGs, climate, rights and refugees

Science & Society

General ScienceInventions, the body, space and more
Muslim ScientistsFrom Al-Khwarizmi to Abdus Salam
Nobel LaureatesPakistani and world laureates
EthicsValues, integrity, emotional intelligence
EconomicsInflation, GDP, budgets and taxes
Current AffairsWho's who, economy, monthly news

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Muslim scientists

Ahmed Zewail

1946 – 2016 · Egypt and Caltech (USA)

ChemistryPhysics

Known for

Nobel Prize in Chemistry 1999 for femtochemistry

Biography

Egyptian-American chemist who studied in Alexandria and worked at the California Institute of Technology.

Contributions

Used ultrafast laser flashes to watch chemical reactions happen at the scale of femtoseconds
Founded the Zewail City of Science and Technology in Egypt

Ahmed Zewail (Chemistry, Physics) | Knowledge360