Question

5. DNA codes for proteins which are the building blocks of organisms. What is the most abundant

protein in the human body ? [ ]

1) Tubulin 2) Albumin 3) Collagen 4) Keratin

6. Noble gases are inert because they have completed outer electron shells. Which of these elements

isn’t a noble gas ? [ ]

1) Helium 2) Argon 3) Chlorine 4) Krypton

7. What is the most common isotope of hydrogen ? [ ]

1) Protium 2) Deuterium

3) Tritum 4) Hydrogen only has one isotope

8. You can’t live without water ! What is its chemical formula ? [ ]

1) H2

2) O2

3) H2O 4) H2O2

9. Who is credited with the invention of the modern periodic table ? [ ]

1) Nobel 2) Lavoisier 3) Mendel 4) Mendeleev

10. Which of these elements is a nonmetal ? [ ]

1) Sulfur 2) Manganese 3) Aluminum 4) Beryllium​

Answer 1

Answer:

5. 3) Collagen

6. 3) Chlorine

7. 2) Dueterium

8. 3) H2O

9. 4) Mendeleev

10. 4) Berylium

Answer 2

Explanation:

• 2nd option
• 3rd option
• 3rd option
• 4th option
• 1st option