Physical Sciences MCQs and Quiz
1. Mixture of two metals is called:
(a) Dispersal
(b) Alloy
(c) Amalgam
(d) Metalloid
2. An extremely small piece of silicon on which integrated circuits are fabricated are called:
(a) Chip
(b) Card reader
(c) Feed
(d) Hollerith Code
3. What is the main cause of earthquakes?
(a) Volcanic activities
(b) Tectonic plates’ movement
(c) Tectonic dislocation
(d) All of the above
4. Air is the mixture of gases in our atmosphere. It consists of mainly Nitrogen (78%) and Oxygen. What is the percentage of Oxygen in the air?
(a) 22%
(b) 18%
(c) 21%
(d) 20%
5. If the acid is dissolved in a little water, it is concentrated acid. What is it called when it is dissolved in a lot of water?
(a) Low acid
(b) Light acid
(c) Dilute acid
(d) Semi acid
6. What is called that substance which reacts with an acid to give a salt?
(a) Alkali
(b) Base
(c) Salt base
(d) Basic salt
7. Alkali is a base dissolved in water. Alkalis react with acids to give salt. What is this reaction called?
(a) Saltnization
(b) Ionization
(c) Neutralization
(d) Naturalization
8. Which acid is contained by our stomach to digest food?
(a) Sulphuric acid
(b) Acetic acid
(c) Hydrochloric acid
(d) Peptic acid
9. All acids taste sour. Fruits, such as lemon, taste sour. Which acid do they contain?
(a) Acetic acid
(b) Citric acid
(c) Hydrochloric acid
(d) Sulfuric acid
10. By which acid does vinegar taste sour?
(a) Sulphuric acid
(b) Acetic acid
(c) Citric acid
(d) Phosphoric acid