Jamb Chemistry Past Questions For Year 2021
Question 21
The most abundant rare gas in the atmosphere is?
- A. He
- B. Ne
- C. Ar
- D. Xe
Question 22
The inherited traits of an organism are controlled by?
- A. RNA molecules
- B. Nucleotides
- C. DNA molecules
- D. Enzymes
Question 23
220g of carbon dioxide contains ----- moles
- A. 5
- B. 6
- C. 3
- D. 4
Question 24
The mass of one Avogadro number of helium atoms is?
- A. 1.00gram
- B. 4.00gram
- C. 8.00gram
- D. 6.00gram
Question 25
The only metal that is anti-bacterial is?
- A. Iron
- B. Sodium
- C. Alluminium
- D. Copper
