N.C.E.R.T. Simplified

Q. RTC  " Yes, I need your help. You know when you were away, Karmaveera came as usual." i) Who is the speaker of these lines? A.i)  The author (Sudha Murty's) grandmother Krishtakka is the speaker of these lines. ii) Who was away and where? A.ii) The writer Sudha Murty was away. She had gone to the neighboring village to attend a wedding. iii) What is Karmaveera referred to? A.iii)  Karmaveera is referred to the weekly Kannada magazine in which the novel Kashi Yatre appeared as a serial. Q. Why could the Grandmother identify with the protagonist of the novel Kashi Yatre? A. The protagonist of Kashi Yatre was an old lady who had been saving money to visit Kashi. The grandmother also had an ardent but incomplete desire to go to Kashi. Thus she could relate to the protagonist of Kashi Yatre. Q. Which traits of the Grandmother's character played a role in her success? A.  Grandmother achieved success in her goal because of her d

Q.  Give the distribution of montane forests on the basis of their height. A.  i) Wet temperate montane forests- These types of forests are found between a height of 1000-2000m. Broad leaved trees like oaks and chestnuts predominate. ii) Temperate montane forests-   Found at a height of 1500-3000m. Common trees are silver fir, pine, deodar, spruce, and cedar etc. Found in southern slopes of Himalayas, southern and northeast India. iii) Alpine montane forests- These are found at a height of more than 3600m. Common trees are silver fir, juniper, pines, and birches etc. At higher altitudes, mosses and lichens form part of the vegetation. Q. What are the main causes which are a threat to ecosystem? Write some measures to conserve it. A.  The main causes are-  Hunting for commercial purposes. Pollution due to chemical and industrial waste, and acid deposits. Introduction of alien species. Reckless deforestation to bring land under cultivation and habitati

Q. Define density and relative density. Give their S.I. units. A.   Density: It is the mass of substance per unit volume. S.I. unit of density is kg/m³. Relative density:  It is the ratio of the density of a substance to that of water. Q. Define thrust and pressure. Give their S.I. units. A. Thrust:  It is the force acting on an object, perpendicular to its surface. S.I. unit of thrust is N (Newton). Pressure:  It is the perpendicular force acting on a unit area. S.I. unit is Pascal (Pa) i.e. N/m². Q. Explain why a sharp knife cuts better than a blunt knife. A.  The area on which the force acts decreases if we use a sharp knife and thus the pressure and effect of force increases (P∝1/A). Hence a sharp knife cuts better than a blunt knife. Q. Explain why tanks are made to run over broad steel tracks? A. Broad steel tracks increase the area of contact between the tank and the ground. This reduces the pressure on the ground and prevents the tank from sinking into the gr