I hope you can do no. b .....

उपसर्ग भनेको मूल शब्दको बायाँ वा देब्रेतिर जोडिन आउने भाषाका टुक्रा (अ, सम्, वि, दुर्, निर्)लाई .....

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1. Here, in the first figure, the angle of incidence in glass medium is 35o,     which is less than critical angle (42o).     So, the ray gets refracted with certain angle in air medium. 2. In the second figure, the angle of .....

The visual cells in the eyes called rods and cones convert light energy into electrical impulses. In light conditions, certain chemical reactions see that the sensitivity of the rods (which are responsible for vision in dim conditions) is .....

a)  Look at the position of carbon in the Reactivity Series: Metals are often found in their ores as oxides or sulfides. The sulfides, such as lead sulfide, can be converted to the oxide by roasting in air: lead .....

From the question Distance(s) = 2km = 2000m  Acceleration(a) = 0.5m/s2 Initial velocity(u) = 0m/s Final velocity(v) = ? Time(t) = ? Here, by using formula of  v2 = u2 + 2as v2 =  (0)2 + 2⨉ 0.5 ⨉ .....

The reason why solute dissolves at a faster rate in hot water has to do with increased molecular motion. The added energy in the hot water causes water molecules to move faster and solute molecules to vibrate .....

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The molecular formula of nitrite is NO2 and has a structure with Nitrogen atom between the two Oxygen atoms. It has a bent molecular geometry molecular shape.  One of the most prominent usages of nitrites is that it is used as the useful .....

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All of the changes that happen in the universe depend on energy. To cause a change to occur, energy may change form. For example, the chemical energy in wood changes to thermal energy (heat) when the wood is burned. However, though energy can be .....

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Here, We have given 3 , 6 , 12 , 24 This sequence is in geometrric , because each terms are multiple of 2. So,  fifth term = 24 x2 = 48 Eight term = 48 x 2 x 2 x2 = .....

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Before solving this problem, you have to remember or know this given table: = 990 = 900 + 90 = ( 1000 - 100 ) + ( 100 - 10 ) = ( M - C ) + ( C - X ) = CM + XC = .....

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A right angle is an angle of exactly 90 .....

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You know, there is a rod of platinum-iridium alloy, having its height equal to its diameter, kept in the vault of International Bureau of Weight and Measurement in Pairs of France.  The mass of this rod is taken as 1 kg mass.  All .....

Downy feathers as well as semiplume feathers put the birds .....

The animals which swallow their food without chewing and at the time they relax, they bring their food back from stomach and chew well, these types of animals are called cud chewing animals. eg. cow, buffaloes .....

Saliva is a clear liquid made by several glands in your mouth area.

Saliva is an important part of a healthy body. It is mostly made of water. But saliva also contains important substances that your body needs to digest food .....

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You can see different things around you. Like: House, tree, dog, bird, stone etc. All of these things are made up of small units called as cells. Human body is also made up of .....

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Joint O to points A, P, C and D as shown in figure. In triangles ACO and PDO,  i. AO = PO (S)       [∵ being radii of same circle] ii. AC = PD (S)       [∵ being half of two equal chords AB and .....

Energy is the capacity of a physical system to do work. The common symbol for energy is the uppercase letter (E).The standard unit is the joule, symbolized by J. One joule (1 J) is the energy resulting from the equivalent of one newton (1 N) of .....

i)  Fire moves very fast,it can catch up dry grasses ,leaves very fast.  ii) Burning piles of leaves or grass can get out of control.  iii) It can damage the whole surroundings if fire get out of ontrol. iv) A small fire can be .....

Copper is so weakly magnetic that we can't observe it without very, very large magnetic fields. so  shortly copper doesnot contains magnetic property." This can quickly be tested by trying to pick up a penny with a magnet but iron .....

Saliva contains the enzyme amylase, also called ptyalin. Ptyalin is capable of breaking down starch into simpler sugars such as maltose and dextrin.  These sugars can be further broken down in the small .....

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