Question Paper
Class / Subject: Class 8 (CBSE) · Science
Chapter: Chapter 8 — Chapter 8: Nature of Matter: Elements, Compounds, and Mixtures
Time Allowed: 15 minutes
Max Marks: 6
1. Water is an example of a: [1]
(A) compound
(B) element
(C) mixture
(D) metal
2. The chemical formula for water is: [1]
(A) H₂O
(B) O₂
(C) H₂
(D) CO₂
3. A compound's properties are: [1]
(A) different from its constituent elements
(B) always the same as its elements
(C) impossible to predict
(D) identical to a mixture's properties
4. Sand and iron filings can be separated using: [1]
(A) a magnet
(B) filtration
(C) distillation
(D) evaporation
5. A mixture with uniform composition throughout, like salt water, is called: [1]
(A) homogeneous
(B) heterogeneous
(C) a compound
(D) an element
6. Unlike a compound, a mixture: [1]
(A) does not have a fixed composition ratio
(B) always has a fixed composition ratio
(C) cannot be separated
(D) is always a single substance