Question Paper
Class / Subject: Class 8 (CBSE) · Science
Chapter: Chapter 1 — Chapter 1: Exploring the Investigative World of Science
Time Allowed: 15 minutes
Max Marks: 6
1. A reliable scientific investigation should: [1]
(A) record data honestly, even unexpected results
(B) only record expected results
(C) skip repeating experiments
(D) avoid peer review
2. In an experiment, the variable being tested is: [1]
(A) isolated while others are controlled
(B) always ignored
(C) changed randomly
(D) never measured
3. Repeating an experiment multiple times helps: [1]
(A) check the consistency of results
(B) waste time
(C) confuse the data
(D) avoid needing conclusions
4. An instrument used to observe very small objects is a: [1]
(A) microscope
(B) thermometer
(C) stopwatch
(D) beam balance
5. A beam balance is used to measure: [1]
(A) mass
(B) temperature
(C) time
(D) volume
6. Using an uncalibrated instrument can lead to: [1]
(A) inaccurate readings
(B) always perfect readings
(C) faster experiments
(D) no effect on results