AP Chemistry MCQ Question with Answer

AP Chemistry MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 15
The atomic number of an element is determined by the number of:

Protons

Electrons

Neutrons

Nucleons

Question No : 16
Which of the following is a transition metal?

Sodium

Iron

Calcium

Potassium

Question No : 17
What is the chemical formula for table salt?

NaCl

H2O

CO2

CH4

Question No : 18
What is the atomic number of carbon?

Question No : 19
What is the formula for the hydroxide ion?

OH2

H2O

OH-

Question No : 20
What is the chemical formula for glucose?

C2H6O

CH4

C6H12O6

C8H18

Question No : 21
What is the chemical formula for water vapor?

H2O

CO2

H2O2