1. Water combines atoms of _______ and oxygen.   hydrogen   nitrogen   helium   carbon   Hint Half-n-half Clue   2. Which of these monuments is located in London?   Eiffel Tower   Statue of Liberty   Big Ben   Leaning Tower   Half-n-half Clue   3. The number '4' in the Roman numeral system is written as   XI   IX   VI   IV   Half-n-half Clue   4. In our solar system, how many planets are there between the Earth and the Sun?   Three   One   Zero   Two   Half-n-half Clue   5. Which of these is not a planet?   Venus   Earth   Mercury   Moon   Half-n-half Clue   6. Who wrote 'Macbeth'?   Hans Christian Anderson   William Shakespeare   Charles Dickens   George Bernard Shaw   Half-n-half Clue   7. Which is the waterfall that is shared by USA and Canada?   Victoria Falls   Niagara Falls   Angel Falls   Iguacu Falls   Half-n-half Clue