Exploration: Entering the World of Secondary Science
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Exploration: Entering the World of Secondary Science
SubtopicExploration: Entering the World of Secondary Science under Exploration: Entering the World of Secondary Science for Grade 9 CBSE.
Preview questions (no answers)
- 1.
Why is it important to repeat experiments multiple times?
A.To waste time
B.To make the lab look busy
C.To ensure results are reliable and consistent
D.Because the teacher said so
- 2.
What is the value of the prefix 'milli' in scientific notation?
A.B.C.D. - 3.
Who is often called the 'Father of Science' for his contributions to the scientific method?
A.Aristotle
B.Galileo Galilei
C.Isaac Newton
D.Albert Einstein
- 4.
What color does blue litmus paper turn when dipped in an acid?
A.Red
B.Green
C.Yellow
D.Remains blue
- 5.
A student uses a compound microscope in the laboratory to observe a slide of onion peel cells. The light path through the lenses is shown in the diagram. If the magnification of the eyepiece is and the objective lens is set to , what is the total magnification of the specimen being observed?
A.B.C.D. - 6.
In the SI system of measurement, certain units are defined as base units, while others are derived from them through mathematical relationships. Based on the classification shown in the flowchart, which of the following is a derived unit?
A.Mole
B.Ampere
C.Pascal
D.Candela
- 7.
A student is conducting an experiment to investigate how different concentrations of salt in water affect the time it takes for the water to reach its boiling point. Following the experimental design shown in the flowchart, identify the independent variable in this investigation.
A.The time taken to boil
B.The salt concentration
C.The volume of water used
D.The type of heating source
- 8.
Two bodies of masses and are dropped from the same height. The ratio of the time taken by them to reach the ground is:
A.1 : 2
B.1 : 1
C.1 : 4
D.2 : 1
- 9.
Plasmolysis in a plant cell is defined as:
A.Breakdown of plasma membrane in hypotonic medium
B.Shrinkage of cytoplasm in hypertonic medium
C.Shrinkage of nucleoplasm
D.None of these
- 10.
Which mixture among the following can be separated by using a separating funnel?
A.Water and Alcohol
B.Water and Mustard Oil
C.Water and Sugar
D.Iron filings and Sand
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