Question 1:

What is heavy water made of ?

A. Two hydrogen atoms and two oxugen atoms

B. Two deuterium atoms and one oxygen atom

C. Two oxygen atoms and one hydrogen atom

D. Three hydrogen atoms and one oxygen molecule.

These questions are from this test. Would you like to take a practice test?

Trivial Practice Quiz science-technology - Test 99 | Englishfreetest.com

Name: Englishfreetest.com
Rating: 4,8 (1860 reviews)

Some questions from the same exam