Download free Class 11 chapter-wise NCERT solutions, textbook answers, sample question papers, syllabus, and study notes.
PAGE NO: 278 Solution 1: Yes, Sound is form of energy. Solution 2: Sound is produced by the vibrating objects. Solution 3: No, sound cannot travel through vacuum. Solution 4: Yes, sound can propagate...
PAGE NO: 261 Solution 1: Convex mirror has a wider field of view. Solution 2: Convex mirror always produces an erect image of the object. Solution 3: Convex mirror is used in vehicles to see the...
PAGE NO: 258 Solution 1: A spherical mirror is a part of a hollow glass sphere silvered on one side. Solution 2: Solution 3: Focal length = 1/2 of radius of curvature = 1/2 x 30 = 15cm. Solution 4:...
PAGE NO: 245 Solution 1: Light may be defined as the radiant energy which produces in us the sensation of sight. Light itself is invisible but makes other objects visible. Solution 2: Yes, light is a...
PAGE NO: 209 Solution 1: Temperature is the quantity that tells about the thermal state of a body i.e. the degree of hotness or coldness of a body. Solution 2: Thermometer is used for measuring the...
PAGE NO: 202 Solution 1: Coefficient of Linear expansion is equal to the change in length of a rod of length 1m when its temperature rises by 1°c. Coefficient of superficial expansion is equal to the...
PAGE NO: 191 Solution 1: Heat is defined as a form of energy which flows from one point to another on account of temperature difference. Solution 2: Yes, heat is a form of energy Solution 3: Joule is...
PAGE NO: 61 Solution 1: A body is said to be in state of rest if it does not change its position with respect to its surrounding objects with time. Solution 2: A vector quantity is that physical...
PAGE NO: 15 Solution 1: Measurement is an act or the result of comparison of a quantity whose magnitude is unknown with a predefined standard. Solution 2: The physical quantities like mass, length...
In the world of education, Class 10 is a crucial milestone for students. Among the various subjects they study, Biology is one that often poses challenges. However, with the right resources and...
PAGE NO : 169 Solution 1: Diptheria, tetanus, malaria, typhoid, rabies etc are diseases caused by pathogens. Heart disease, Osteoporosis (bones), Parkinson’s disease (CNS) etc are examples of...
PAGE NO : 162 Solution 1: Disease: Any physical or physiological disorder in normal functioning of any organ or part of body is called disease. Health: Health is a state of complete mental, physical...
PAGE NO :128 Solution 1: Pituitary gland Somatotrophin Thyroxine Pancreas Liver Adrenal gland Adenohypophysis Neurohypophysis Thyroxine Solution 2: Somatotrophic Hormone – It is essential for the...
PAGE NO : 74 Solution 1: Solution 2: Plant pigments – Plant pigments are a variety of different kinds of molecules present in plants that absorb certain wavelengths of light while reflecting others....
PAGE NO:60 Solution 1: Transpiration: It is the loss of water in the form of water vapour from aerial parts of the plant. During transpiration, water comes out in the form of water vapour....
PAGE NO:48 Solution 1: Osmosis – Osmosis is the movement of solvent molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane. Diffusion –...
PAGE NO:35 Solution 1: Gregor Johann Mendel. Solution 2: Genetics is the branch of biology that deals with the study of transmission of characters from parents to offspring. Solution 3: The term...
PAGE NO-20: Solution 1: Chromatin is an extremely thin, long nuclear fibre occurring in the nucleus before cell division. Solution 2: In interphase, the chromatin appears as a network of long,...
PAGE NO-11: Solution 1: Cell division is important for a variety of reasons. One reason is that cell division is important for the growth of an organism. It is also important for cells to divide so...
Frank ICSE Solutions for Class 10 Chemistry Chapter 1-Periodic Properties And Variation Of Properties PAGE NO : 16 Solution 1: Modern periodic law states that the physical and chemical properties of...