The correct answer is (b) Solid < Liquid < Gas. In solids, particles are tightly packed with minimal space between them. In liquids, particles have more space and can move freely. In gases, particles are far apart, allowing them to ...
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The correct answer is (b) Blue colour will spread more quickly in B. In hot water (B), the higher temperature increases the kinetic energy of water molecules, speeding up the diffusion of copper sulfate. This causes the blue color to ...
Malli and Valli observe bundles of harvested wheat stalks lying in the fields. Some stalks are spread out in the sun for drying. They also see farmers beating the stalks on a large wooden log. NCERT Book Curiosity Science Class ...
All cells come from pre-existing cells through the process of cell division, where cells divide to produce new cells of their own kind.
Some unicellular organisms mentioned are Amoeba, Chlamydomonas, Paramoecium, and bacteria.