Science

Question: Explain how soil is formed. Answer: Soil is formed through the process of weathering. Weathering is a process of physical breakdown and chemical decomposition of rocks and minerals near or at the surface of the earth. This physical and chemical decomposition is primarily done by wind, water, and climate. As …

NCERT 7th Class (CBSE) Science: Soil – Quiz 11 Multiple Choice Questions related to NCERT 7th Class (CBSE) Science: Soil – Quiz: Reduce the use of plastics: Plastics and polythene bags destroy the fertility of soil. Hence, these should be disposed off properly and if possible, their use should be …

Question: Why is transport of materials necessary in a plant or an animal? Explain. Answer: Transport of materials is necessary for plants or animals because due to it the nutrients and oxygen are made available to all the parts of the body. If the transport of necessary nutrients and oxygen does …

NCERT 7th Class (CBSE) Science: Electric Current and its effects – Quiz 32 Multiple Choice Questions related to NCERT 7th Class (CBSE) Science: Electric Current and its effects – Quiz: An electric Circuit is a continuous conducting path for electric current. If current flows from point A to point B …

NCERT 7th Class (CBSE) Science: Respiration in Organism – Quiz 21 Multiple Choice Questions related to NCERT 7th Class (CBSE) Science: Respiration in Organism – Quiz: In yeast, the cellular glucose is converted into alcohol and carbon dioxide which give us energy. Stomata apparatus means stomata along with nearby guard …

Question: What do you mean by ‘stomata’ apparatus? Answer: Stomata apparatus means stomata along with nearby guard cells and other cells. Question: What are the main organs of the respiratory system? Answer: Main organs that help in respiration are : Nostrils (The passages in the nose) Trachea (Windpipe) Bronchi Lungs Question: …

NCERT 7th Class (CBSE) Science: Winds, Storms and Cyclones – Quiz 15 Multiple Choice Questions related to NCERT 7th Class (CBSE) Science: Winds, Storms and Cyclones – Quiz: The air get heated the molecules expand and get away from each other and the air becomes less dense. After reaching the …

NCERT 5th Class (CBSE) Science: Measurement – Quiz 15 Multiple Choice Questions related to NCERT 5th Class (CBSE) Science: Measurement – Quiz: The speed of a thing tells us how much distance it travels in a given unit of time. Density is the amount of mass contained in a unit …

NCERT 7th Class (CBSE) Science: Weather, Climate and Adaptations of Animals to Climate – Quiz 24 Multiple Choice Questions related to Weather, Climate and Adaptations of Animals to Climate – Quiz: Weather: The day-to-day atmospheric condition at a place. Climate: The average weather pattern that prevails over a long period …

NCERT 5th Class (CBSE) Science: Light and Shadows – Quiz 10 Multiple Choice Questions related to NCERT 5th Class (CBSE) Science: Light and Shadows – Quiz: Materials that allow all the light to pass through them are called transparent materials. Eg: clear glass and clean water. Translucent and opaque materials …