Train move in the railway at a very high speed. So, due to friction, it generates large quantity of heat while moving on the track. Due to the heat, the track might expand and might change the track and cause accident. Hence, to prevent that, the .....

Radiators in automobiles help to absorb heat and radiate to outer environment. It is filled with liquid. If radiators are completely filled with liquid, due to the expansion of the liquid becuase of the heat, the radiator might burst. Hence, to .....

The molecules of a solid are arranged in a tightly-packed.  The molecules experience some motion, but not much.  It would be fair to say they have a greater attraction between themselves than do the molecules of liquid. Liquids, on .....

1.Fossil fuel is the fuel that we obtain from the fossils of plants and animals buried under the earth's crust for a long time.  While biofuel is the fuel that can be obtained from biomass, wood, hay, straw,chaff,etc. 2. The decay of .....

You know that, heat is the total sum of kinetic energy present in a body.  While, temperature is the average of the kinetic energy of its molecules.  Do you know, which equipments we use to measuere the heat and the temperature? We use .....

Semi conductors are those which follow both the character of metals and non-metals. Germanium is a semiconductor as it has both the property of metal and non-metal. It allows small electricity to flow i,e its conductivity lies between conductor .....

When the switch is ON, it connects the wires to make circuit closed in which load starts working. In OFF position of the switch, the wire is not connected and the circuit becomes open in which the electric load does not work. So, electrical .....

You may know that an electric bulb glows because of flow of electricity. Metal wire is a substance through which electricity flows. So, it is called as conductor of electricity. On the other hand, cotton thread is a substance through .....

You know dry cell is portable. Dry cell converts chemical energy into other forms of energy. So, it also convert chemical energy into electical energy. Thus, dry cell can be used in radios and in other electrical device. Hence, it is known as .....

You may know that electricity is the energy possess by electric current. The uses of electricity are 1. Electricity is used to produce light. 2.You might have seen electric kettle. Electricity is used in it to warm up the water. 3. Electricty .....

The electrolyte is ammonium .....

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The positive terminal is carbon and negative terminal is .....

The path through which electric current moves is known as elecctric circuit. The two types of electric circuit are  1. Closed circuit 2. Open .....

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The SAARC Secretariat was established in Kathmandu on 16 January 1987. Its role is to coordinate and monitor the implementation of SAARC activities, service the meetings of the .....

Of course, it develops the relationship between and among the countries or regions.  People come and go from one country to another country and they can introduce themselves and the country they belong to.  It develops respect between .....

On the inauguration ceremony of the 26th advisory committee of the Columbo plan, his majesty king Birendra had addressed his speech of the regional co-operation for the development of water resource in 1977(2034). Thereafter president Ziaur-Rahman .....

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Federal executive

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The differences between physical and chemical temporary contraceptive devices are as follows:  

S.N.

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बिश्व खाध्य कार्यक्रमका निम्न उत्तरदाइत्वो छन्: १ भोकमरी र कुपोषणबाट मानवको रक्षा गर्नु २ .....

प्रिय मित्र,                    धेरै धेरै सम्झना। म याहा सन्चै छु र तिमिपनि त्यहा सन्चै .....

King Tribhuvan Bir Bikram Shah Dev is called the father of the nation. He was one of the key figures in bringing democracy in Nepal. You might have heard that he played a great role to abolish the Rana rule. The king worked closely with Praja .....

The total life-cycle of a Silkworm ranges from 6-8 weeks. Generally, the warmer the weather, the quicker the Silkworm will complete its life-cycle. Eggs     10-25 days Lava     20-33 days Pupa     10-14 .....

भुमद्दिय सागरिय .....

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Now put the value of k in  a = (k.5 + 1.2)/( k + 1) you will find the value of a. then the required .....