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

Nature and meaning of science

“Nature and Meaning of Science” introduces Class 9 students to science as a systematic way of exploring the natural world, rather than a collection of fixed facts. Within “Exploration: Entering the World of Secondary Science,” students examine how observation, questioning, evidence, measurement, reasoning, experimentation, and communication work together to build scientific knowledge. The topic also highlights curiosity, objectivity, creativity, responsible investigation, and how explanations change when new evidence emerges. It connects science with everyday experiences and prepares learners for inquiry-based study of later concepts.

Hard · Level 6 · 25 questions

Practice questions

01Predictions from a scientific model repeatedly turn out to be wrong. What is the most appropriate step?

0 reads0 helpful★ – (0)

Answer and explanation

02A researcher described the experimental method in detail but did not explain sample selection. Which assessment becomes difficult?

0 reads0 helpful★ – (0)

Answer and explanation

03Why is revision of scientific knowledge not considered a weakness of science?

0 reads0 helpful★ – (0)

Answer and explanation

04A claim is supported only by saying that it has been believed for many years. Why is this scientifically weak?

0 reads0 helpful★ – (0)

Answer and explanation

05Why is the smallest division of a measuring instrument important in an experiment?

0 reads0 helpful★ – (0)

Answer and explanation

06If repetition of an experiment gives the same incorrect value each time which check would be most useful?

0 reads0 helpful★ – (0)

Answer and explanation

07Why is it necessary to state the conditions under which a scientific conclusion applies?

0 reads0 helpful★ – (0)

Answer and explanation

08In an experiment the observed difference is very small and the instrument uncertainty is larger. What is the most appropriate conclusion?

0 reads0 helpful★ – (0)

Answer and explanation

09What does it mean for a scientific claim to be falsifiable?

0 reads0 helpful★ – (0)

Answer and explanation

10What is the major benefit of following a predetermined analysis plan in research?

0 reads0 helpful★ – (0)

Answer and explanation

11In an experiment the control group accidentally received part of the treatment. What effect may this have?

0 reads0 helpful★ – (0)

Answer and explanation

12A scientist wrote that the results prove the hypothesis. What would be more cautious scientific language?

0 reads0 helpful★ – (0)

Answer and explanation

13A result was obtained repeatedly but only under similar conditions. What is needed before applying it to other conditions?

0 reads0 helpful★ – (0)

Answer and explanation

14If the answer to a question depends only on personal preference what type of question is it?

0 reads0 helpful★ – (0)

Answer and explanation

15When is criticism in the scientific community useful rather than personal opposition?

0 reads0 helpful★ – (0)

Answer and explanation

16A study reports only the average but not the spread of data. What information may be hidden?

0 reads0 helpful★ – (0)

Answer and explanation

17When is the internal validity of an experiment considered strong?

0 reads0 helpful★ – (0)

Answer and explanation

18A scientific explanation also explains several different facts together. What can this quality be called?

0 reads0 helpful★ – (0)

Answer and explanation

19A scientific claim is tested only for supportive outcomes with no plan for opposing results. What is the main weakness?

0 reads0 helpful★ – (0)

Answer and explanation

20What is the ethical purpose of keeping participants' identities confidential in a study?

0 reads0 helpful★ – (0)

Answer and explanation

21If risks exceed benefits in a scientific study what is ethically necessary?

0 reads0 helpful★ – (0)

Answer and explanation

22A scientific conclusion is supported by different kinds of evidence such as observations experiments and models. What is its importance?

0 reads0 helpful★ – (0)

Answer and explanation

23What does calling scientific knowledge a social process indicate?

0 reads0 helpful★ – (0)

Answer and explanation

24A scientific claim is found valid only under limited conditions because of new evidence. What conclusion follows?

0 reads0 helpful★ – (0)

Answer and explanation

25Which is the most balanced description of the meaning of science?

0 reads0 helpful★ – (0)

Answer and explanation

Add Muft Shiksha to your Home Screen

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