Practice your trivia skills: Science & Nature
CategoriesScience & Nature
76. How many types of quarks are there in the standard model of physics?
6
4
2
3
77. How many officially recognized dwarf planets in the solar system are named after Polynesian deities?
0
1
2
5
78. Who developed the first successful polio vaccine in the 1950s?
Jonas Salk
Frederick Robbins
John F. Enders
Thomas Weller
79. Who made the discovery of X-rays?
Wilhelm Conrad Röntgen
James Watt
Albert Einstein
Thomas Alva Edison
80. Dry ice is the solid form of what substance?
Ammonia
Oxygen
Carbon dioxide
Nitrogen
Check answers NEXT BACK