To form an image at infinity by convex lens is that when any object is placed at the focus of a convex lens, the convex lens converts the diverging rays of light coming from the object into a parallel beam ...

Living organisms are well organised to structure, they can have tissues, tissues also have cells, cells have smaller components in them. Leaving organisms skip repairing and maintaining their structures by self. All these structures are made up of molecules and ...

Remember when air passes through the nasal cavity and take it as respiration. But that air is filtered by the nostrils, and moistened by mucus, before air is going into the lungs. And gets warmer equal to the temperature of ...

As we know that our stomach has a lining mucus cells. The mucus is secreted in the gastric juice by the glands present in the stomach wall of stomach from its own secretions of hydrochloric acid (HCl). HCl will cause ...

(I) KCL (II) HCL (III) CCL4 (IV) NaCL