The correct option is [B]. Sodium hydroxide is called an alkali because it is a base that dissolves in water, forming a basic solution. Ferric hydroxide, though a base, is insoluble in water and not termed an alkali. class 10 science ...
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The developing embryo gets nutrition from the mother’s blood through the placenta. Nutrients and oxygen pass from maternal blood to the embryo, while waste products move from the embryo to the mother for disposal. CBSE Sample Paper Class 10 Science 2025-26 Tiwari ...
(a) In the F1 generation, all seeds will be round and yellow, as round (R) and yellow (Y) are dominant traits. (b) F2 generation shows the following combinations: Round Yellow, Round Green, Wrinkled Yellow, Wrinkled Green, Ratio = 9 : ...
The correct statements about ozone depletion are: (i) Chlorofluorocarbons (CFCs) are the main cause. (ii) Ozone depletion increases harmful ultraviolet (UV) radiation reaching Earth. (iii) The ozone hole is prominently observed over Antarctica. Ozone depletion does not protect humans from ...
(i) This is vegetative reproduction, where new plants grow from underground parts like tubers, rhizomes, or bulbs. Example: Potato grows from tubers. (ii) Advantages: fast multiplication, true-to-type plants. Disadvantages: diseases spread easily, no genetic variation. (iii) Offsprings show little variation because they ...