Which element is blue in liquid state?

hydrogen

nitrogen

oxygen

helium

Liquid oxygen has a pale blue color and is strongly paramagnetic. The first measurable quantity of liquid oxygen was produced by Polish professors Zygmunt Wróblewski and Karol Olszewski (Jagiellonian University in Kraków) on April 5, 1883.

wikimedia wikipedia → Liquid oxygen

chemical elementschemistryscience

Chemical elements quiz Science quiz Chemistry quiz

You will play as

Answers by country

France

23%

70%

the Netherlands

13%

66%

13%

Australia

15%

55%

13%

Vietnam

30%

46%

23%

Poland

12%

24%

45%

17%

3011

Canada

27%

45%

15%

Austria

14%

28%

43%

14%

Malaysia

25%

43%

Germany

14%

19%

42%

22%

478

the United States

16%

22%

42%

17%

287

the United Kingdom

13%

30%

40%

14%

169

Greece

28%

38%

28%

Switzerland

25%

14%

34%

22%

India

18%

30%

33%

14%

532

Republic of Ireland

12%

43%

31%

12%

Nigeria

23%

21%

27%

26%

117

the Philippines

20%

28%

26%

22%

Ghana

19%

34%

26%

19%

Singapore

15%

30%

25%

30%

Pakistan

20%

26%

24%

28%

What is the name of the most radioactive isotope on the planet?

Which chemical element forms compounds which are typically intensely colored?

Which of the following is not a chemical element?

What numbers do NOT exist in Mathematics?