Science

About how many thousands of visitors are in the world's largest conferences?

• 2000

• 10 000

• 30 000

• 35 000

How many participants of the 1927 Fifth Solvay Physics Conference have won Nobel Prizes?

• 7

• 19

• 22

• 28

Where did the first international scientific conference take place?

• Denmark

• France

• Italy

• Poland

In what year did the first international scientific conference take place?

• 1767

• 1790

• 1860

• 1918

Which of the following solvents is the safest according to green chemistry principles?

• Acetone

• Acetonitrile

• Methanol

• Supercritical CO2

Which component decomposes first in the pyrolysis process?

• Cellulose

• Hemicelluloses

• Inorganics 

• Lignin

What oil is obtained from the pulp processing process?

• Tall oils

• Sunflower oils

• Motor oils

• Essential oils

By what year does Europe plan to achieve climate neutrality?

• 2030

• 2040

• 2045

• 2050

Which Nobel Prize winner has worked in Latvia?

• Paul Valden

• Vilhelm Ostvald

• Ostvald Valden

• Janis Stradins

For what achievements was awarded the Nobel Prize in 2021?

• For development of a method for genom editing

• For development of lithium-ion batteries

• For development of asymetric organocatalysis

• For the directed evolution of enzymes