CBSE Class 6 Science Chapter 1: The Wonderful World of Science — Assertion & Reason

Both A and R are true. Science is indeed a process of understanding the world through systematic observation and experimentation. The reason correctly explains how science works — by asking questions and performing experiments — which is the core of scientific inquiry introduced in Chapter 1.

A is true — curiosity drives scientific thinking and discovery. However, R is false — a scientist can perform experiments without being curious, but the results won't be meaningful. Curiosity motivates scientists to explore and discover, not just perform lab tasks mechanically.

A is false — science is not limited to laboratories. It is a way of thinking and exploring that happens everywhere in daily life. R is true — as Chapter 1 explains, science can be observed in cooking, gardening, nature, and all everyday activities around us.

Both A and R are true, and R correctly explains A. The scientific method begins with observation — carefully watching and noting what happens. Only after observing does a scientist form a hypothesis and then test it through experiments. This is the foundation of scientific inquiry.

A is false — a hypothesis is NOT a proven fact. It is only a suggested explanation or prediction. R is true — a hypothesis must be tested through experiments before it can be accepted or rejected. Once tested many times with consistent results, it may become a theory or law.

Both A and R are true, and R correctly explains the relationship. Science generates knowledge and understanding, while technology uses this knowledge to develop practical tools, medicines, machines, and solutions that improve human life. Mobile phones, vehicles, and medicines are all products of applied science.

A is false — experiments must be repeated multiple times, not just once. A single result could be due to chance or error. R is true — repeating experiments confirms that results are consistent and reliable, which is a key principle of scientific methodology.

Both A and R are true. Science has dramatically improved human health — vaccines eliminated diseases like smallpox, antibiotics fight infections, and modern surgery saves lives. R correctly explains how science achieves this through discoveries and medical technology.

A is false — children naturally think scientifically by asking "why" and "how" questions and exploring their surroundings. R is true — the Curiosity textbook emphasises that scientific thinking is a natural human trait present in everyone, especially children, and can be developed through curiosity and exploration.

Both A and R are true. Science is a powerful tool — it has improved lives through medicines, electricity, and communication. However, the same knowledge has also been misused to create nuclear weapons and industrial pollution. R correctly supports A by providing examples of both positive and negative impacts.

A is false — science does not always provide final answers. Scientific understanding evolves over time. R is true — new experiments and discoveries constantly refine or sometimes completely change our scientific understanding. For example, our understanding of atoms has changed many times over centuries.

Both A and R are true, and R correctly explains A. The entire process of science begins with a question — "Why does this happen?" or "What will happen if...?" These questions drive investigations, experiments, and ultimately new discoveries. The textbook Curiosity is itself named to reflect this idea.

Both A and R are true. Science does not exist in isolation — it uses mathematics for data analysis and measurements, geography to understand environments, and history to understand how scientific ideas developed over time. R correctly explains the interdisciplinary nature of science.

A is false — a good scientist MUST change their conclusion if evidence suggests otherwise. Refusing to change conclusions based on new evidence is not scientific. R is true — scientific conclusions must always be based on evidence, not personal beliefs. This is what makes science objective and reliable.

Both A and R are true, and R correctly explains A. Our five senses are our primary observation tools in science. However, instruments like microscopes, telescopes, and thermometers extend our observational ability beyond what our senses alone can detect, making scientific discovery more precise and powerful.

A is false — science is much broader than just Physics, Chemistry, and Biology. R is true — science includes many branches such as Astronomy (study of stars and planets), Environmental Science, Geology, Meteorology, and more. The Class 6 Curiosity textbook itself covers topics from all these areas.

A is false — recording observations accurately is extremely important in science. Without proper records, results cannot be verified or shared. R is true — accurate data recording allows pattern identification, analysis, and sharing of scientific knowledge with the wider community, which is how science progresses.

Both A and R are true. India has a rich scientific heritage. C.V. Raman won the Nobel Prize for the Raman Effect in Physics, A.P.J. Abdul Kalam was the father of India's missile program, and Aryabhata made revolutionary contributions to mathematics and astronomy over 1500 years ago. R correctly supports A.

A is false — science cannot answer all questions. Questions like "Is this painting beautiful?" or "What is the meaning of life?" are beyond science. R is true — philosophy, art, emotions, and values are outside the scope of scientific inquiry. Science deals with observable, measurable, and testable phenomena only.

Both A and R are true, and R beautifully explains A. The very name of the Class 6 Science textbook — Curiosity — reflects this spirit. Every scientific discovery raises new questions and opens new frontiers of exploration. This is what makes science an exciting and endless adventure for anyone who loves to learn.