Class name Subject Book title Chapter number Content Created at
Class X Science Science 1 + Cl 2g) (1.22) Chemical Reactions and Equations 9 Reprint 2026-27 Silver bromide also behaves in the same way. 2AgBr(s) Sunlight 2Ag(s) + Br (g) (...
Class X Science Science 1 tubes (A) and (B) [Fig. 1.8 (b)]. n Also, compare the colour of the iron nails Figure 1.8 dipped in the copper sulphate solution (a)Ironnailsdipped...
Class X Science Science 1 which remains in the solution. Such reactions in which there is an exchange of ions between the reactants are called double displacement reactions....
Class X Science Science 1 substance gains oxygen or loses hydrogen during a reaction, it is oxidised. If a substance loses oxygen or gains hydrogen during a reaction, it is ...
Class X Science Science 1 when an iron nail is dipped in it? 2. Give an example of a double displacement reaction other than the one given in Activity 1.10. 3. Identify the ...
Class X Science Science 1 → Al O +223e The above reaction is an example of a (a) combination reaction. (b) double displacement reaction. Science Reprint 2026-27 (c) decompos...
Class X Science Science 1 and endothermic reactions? Give examples. 10. Why is respiration considered an exothermic reaction? Explain. 11. Why are decomposition reactions ca...
Class X Science Science 10 CHAPTER 10 The Human Eye and the Colourful World ou have studied in the previous chapter about refraction of light by Y lenses. You also studied th...
Class X Science Science 10 light rays entering the eye occurs at the outer surface of the cornea. The crystalline lens merely provides the finer adjustment of focal length re...
Class X Science Science 10 hold it at about 25 cm from the eyes. The minimum distance, at which objects can be seen most distinctly without strain, is called the least distan...
Class X Science Science 10 concave lens of suitable power. This is illustrated in Fig. 10.2 (c). A Figure 10.2 concave lens of suitable power will (a), (b) The myopic eye, an...
Class X Science Science 10 and convex lenses. The upper portion consists of a concave lens. It facilitates distant vision. The lower part is a convex lens. It facilitates nea...
Class X Science Science 10 and those without communicable diseases can also donate eyes. 164 Science Reprint 2026-27 ■ Eyes must be removed within 4-6 hours after death. Info...
Class X Science Science 10 Draw a straight line PE inclined to one of the refracting surfaces, say AB, of the prism. ■ Fix two pins, say at points P and Q, on the line PE as ...
Class X Science Science 10 it has bent away from normal. Compare the angle of incidence and the angle of refraction at each refracting surface of the prism. Is this similar t...
Class X Science Science 10 Yellow, Orange and Red, as shown in Fig. 10.5. The acronym VIBGYOR will help you to remember the sequence of colours. The band of the coloured comp...
Class X Science Science 10 is always formed in a direction Sunlight opposite to that of the Sun. The water droplets act like small prisms. They refract and disperse the incid...
Class X Science Science 10 actual position when viewed near the horizon (Fig. 10.9). Further, this apparent position of the star is not stationary, but keeps on changing slig...
Class X Science Science 10 sunrise and the sunset aresomeofthewonderfulphenomenawearefamiliarwith.Intheprevious class, you have learnt about the scattering of light by colloi...
Class XI Psychology Introduction to Psychology 4 information bestowed with a set of seven sense organs. not only from the external world, but also from These sense organs are also known as sensory...
Class X Science Science 10 the fine particles in air scatter the blue colour (shorter wavelengths) more strongly than red. The scattered blue light enters our eyes. If the ea...
Class X Science Science 10 is due to (a) presbyopia. (b) accommodation. (c) near-sightedness. (d) far-sightedness. 2. The human eye forms the image of an object at its (a) co...
Class X Science Science 11 CHAPTER 11 Electricity lectricityhasanimportantplaceinmodernsociety.Itisacontrollable E andconvenientformofenergyforavarietyofusesinhomes,schools, ...
Class X Science Science 11 electric current is taken as opposite to the direction of the flow of electrons, which are negative charges. Reprint 2026-27 If a net charge Q, flo...
Class X Science Science 11 s = 300 C Q U E S T I O N S 1. What does an electric circuit mean? 2. Define the unit of current. 3. Calculate the number of electrons constituting...