Basic Chemistry
What is the chemical symbol for water?
H₂O
What is the powerhouse of the cell?
Mitochondria
Who was the last king of Sri Lanka?
King Sri Vickrama Rajasinha
Which organization is abbreviated as NATO?
North Atlantic Treaty Organization
What is the capital city of Sri Lanka?
Sri Jayawardenepura Kotte
Which element is represented by the symbol "O"?
Oxygen
What molecule carries genetic information in most living organisms?
DNA
In which year did Sri Lanka gain independence from British rule?
1948
What does the term "BRICS" stand for?
Brazil, Russia, India, China, South Africa
Which is the largest desert in the world?
Sahara Desert
What is the pH level of pure water?
7 (Neutral)
What process do plants use to convert sunlight into energy?
Photosynthesis
What was the ancient name of Sri Lanka?
Ceylon
Which treaty was signed to end World War I?
Treaty of Versailles
What is the longest river in the world?
Nile River
What is the molar mass of carbon dioxide (CO₂)?
44 g/mol
Which blood type is considered the universal donor?
O negative (O-)
Who was the first Prime Minister of independent Sri Lanka?
D. S. Senanayake
What is the main purpose of the United Nations?
To maintain international peace and security
Which country has the largest population?
China
hat type of bond is formed between sodium and chlorine in sodium chloride (NaCl)?
Ionic Bonding
What is the primary function of ribosomes in a cell?
Protein synthesis
What is the significance of the Kandyan Convention of 1815?
It marked the end of the Kingdom of Kandy and the beginning of British rule over the entire island.
Who are the permanent members of the UN Security Council?
United States, United Kingdom, France, Russia, China
Which is the smallest country in the world by land area?
Vatican City