Science

NCERT 8th Class (CBSE) Science: Reproduction – Quiz 33 Multiple Choice Questions related to NCERT 8th Class (CBSE) Science: Reproduction – Quiz: Reproduction is the process of producing new individuals of the same kind. Sexual reproduction involves two parents – one male which produced the sperm, and one female which …

Question: Name three natural methods of adding nutrients to soil. Answer: The three natural methods of adding nutrients to soil are: Field fallow, Crop rotation and Mixed cropping. Question:  What are weeds? Answer: The unwanted plants that grow along with the crops and share nutrients are called weeds. Weeds decrease the crop …

NCERT 8th Class (CBSE) Science: Crop Production – Quiz 23 Multiple Choice Questions related to NCERT 8th Class (CBSE) Science: Crop Production – Quiz: Agriculture began 10,000 years ago and enabled humans to settle down in one place. Horticulture deals with the production of vegetables, fruits, flowers and decorative plants. Crop …

Question: Why is reproduction important? Answer: Reproduction is important for producing new individuals of the same kind. Question: How is sexual reproduction different from asexual reproduction? Answer: Sexual reproduction requires two parents, one male and one female, to reproduce. Whereas in Asexual reproduction only one parent is required to reproduce. …

NCERT 8th Class (CBSE) Science: Cell- Structure and Functions – Quiz 38 Multiple Choice Questions related to NCERT 8th Class (CBSE) Science: Cell- Structure and Functions – Quiz: All living organisms are made up of one and more cells. In unicellular organisms, a single cell performs all life functions. In multicellular organisms, …

Question: What are the ‘building blocks of life’? Why are they so called? Answer: All living things are made up of one or more cells. For this reason, cells are known as the building blocks of life. Question: What is cytoplasm? Answer: The cytoplasm is a jelly-like substance that makes up most …

NCERT 8th Class (CBSE) Science: Friction – Quiz 33 Multiple Choice Questions related to NCERT 8th Class (CBSE) Science: Friction – Quiz: Friction is a force that slows things down or prevents things from moving. Friction occurs due to interlocking of irregularities in the surfaces. Friction is necessary evil as several …

NCERT 8th Class (CBSE) Science: Metals and Non-Metals – Quiz 31 Multiple Choice Questions related to NCERT 8th Class (CBSE) Science: Metals and Non-Metals – Quiz: Elements can be classified into metals and non-metals depending on their physical and chemical properties. The ore of a metal consists of rocks containing minerals of …

Question: Differentiate between metal and non metals on the basis of their physical properties? Answer: The difference is as follows: Question: What is the difference between physical state of metals and non-metals at room temperature? Answer: The physical state of metal and non-metal at room temperature: Metal are solid at room …

Question: Define force. Answer: Any push or pull is called force. Question: When does a body move? Answer: A body moves when force is applied. Question: What is the first requirement to put force into play? Answer: Interaction between two objects. Question: Give any example of push. Answer: Pushing a table …