Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects

Science

Hypothesis and experimentation

In Class 9 Science, within “Exploration: Entering the World of Secondary Science,” students learn how scientific questions can be turned into testable hypotheses. They examine the difference between an observation, an inference, and a prediction; identify variables and controls; plan fair experiments; and record evidence carefully. The topic develops skills in measuring, organizing data, interpreting results, recognizing sources of error, and drawing conclusions supported by evidence. Students also understand that experiments refine ideas rather than simply prove them.

Medium · Level 4 · 25 questions

TOPIC PRACTICE

Quiz this set

Up to 25 questions from this page. Select your focus, then start.

25 questions

Choose questions
View options
  1. The hypothesis is automatically proved
  2. All results become identical
  3. It becomes easier to compare data and identify trends
  4. Apparatus are no longer needed
View options
  1. Using a better calibrated instrument
  2. Removing parallax error
  3. Correcting zero error
  4. Repeating the measurement several times
View options
  1. Time taken to fall from the same height
  2. Colour of the balls
  3. Price of the balls
  4. Size of the room
View options
  1. Viewing the scale from far away
  2. Keeping the eye level with the scale marking
  3. Tilting the instrument
  4. Guessing the reading
View options
  1. Every result becomes identical
  2. The hypothesis becomes certainly correct
  3. The effect of individual variations is reduced
  4. The need for controls is removed
View options
  1. A result written without measurement
  2. A result based on guessing
  3. A result that has been altered
  4. Obtaining the same trend in repeated tests
View options
  1. Dependent variable
  2. Independent variable
  3. Uncontrolled error
  4. Conclusion
View options
  1. Only the same student records the result
  2. A different procedure is used each time
  3. Other people can obtain similar results using the same method
  4. The result is accepted without testing
View options
  1. The mass of water cannot be measured
  2. Temperature will always become zero
  3. The hypothesis will automatically be correct
  4. Different surface areas may affect the result
View options
  1. To help form a scientific question and hypothesis
  2. To change the result
  3. To remove safety rules
  4. To stop measurement
View options
  1. The comparison will always be completely correct
  2. Results may be biased or less reliable
  3. All plants will grow equally
  4. The independent variable will disappear
View options
  1. Vertical axis
  2. On both axes
  3. Horizontal axis
  4. On any axis without a rule
View options
  1. Random sampling
  2. Proper control
  3. High accuracy
  4. Confirmation bias
View options
  1. It can be answered through measurement and testing
  2. It asks only about personal preference
  3. It contains no variables
  4. Its answer is fixed beforehand
View options
  1. Number of nails attracted
  2. Distance between the magnet and nails
  3. Colour of the nails
  4. Conclusion of the experiment
View options
  1. When many variables are changed together
  2. When results are guessed
  3. When the experiment measures what it was designed to measure
  4. When the control group is removed
View options
  1. Far above the water surface
  2. Far below the water surface
  3. Behind the container
  4. At the level of the meniscus
View options
  1. If the independent variable changes then the dependent variable will change
  2. The result will be good because I think so
  3. This experiment is very interesting
  4. The apparatus are kept in the laboratory
View options
  1. So all results are as desired
  2. So measurements can be compared fairly
  3. So the hypothesis changes
  4. So fewer apparatus are needed
View options
  1. The data should be changed
  2. The experiment should be considered invalid
  3. The hypothesis was not supported by this test
  4. The hypothesis is still certainly correct
View options
  1. So the apparatus looks attractive
  2. So the result is known beforehand
  3. So no measurement needs to be recorded
  4. So suitable apparatus is chosen and measurements remain within range
View options
  1. Initial amount of water in each cloth
  2. Speed of the fan
  3. Drying time of the cloth
  4. Obtained conclusion
View options
  1. It only makes the report longer
  2. Original measurements can be checked and calculations can be understood
  3. The hypothesis is always proved correct
  4. All anomalous values are hidden
View options
  1. Stirring speed
  2. Time taken for salt to dissolve
  3. Amount of salt
  4. Obtained conclusion
View options
  1. If soil moisture increases then the percentage of seed germination will increase
  2. Wet soil is good
  3. Seeds like water
  4. Germination is a beautiful process

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.