Students and Teachers Forum

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Generally living beings are classifiedd as : i. Plants ii. .....

Power is the rate at which work is done, or energy is .....

Charles Babbage designed an Analytical Engine in 1833 for the computation of mathemetical tables. The basic plan proposed for the Analytical Engine by him completely matches with the input, process and output concept of the modern computers. so, .....

A community is a group of people having similar kinds of needs and interests. They work together to fulfill their needs and offer each other help whenever needed. Some of the ways to keep community healthy are: keep the surrounding clean engage .....

Two properties of solid : A solid has a definite shape and volume. Solids in general have higher density. In solids, intermolecular forces are strong. Diffusion of a solid into another solid is extremely slow. Solids have high melting .....

यी सर्वनामलाई वाक्यमा पनि प्रयोग गर्नुहोस् है .....

The reference standard with which we carry out the measurement of any physical quantity of the same kind is called unit . Unit is necessary to find out the measurement of the unknown .....

Russia's capital city is .....

London is the capital and largest city of England .....

In geometry a line:

is straight (no bends), has no thickness, and extends in both directions without end (infinitely).

A line has no ends .....

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Variable velocity is the velocity which changes with time. When a body covers unequal displacements in equal interval of time, it is said to have variable velocity. A body has variable .....

We use decimals every day while dealing with money, weight, length etc. Decimal numbers are used in situations where more precision is required than the whole numbers can provide. For example, when we calculate our weight on the weighing machine, we .....

Rocket works on the principle of Newton's third law . It states : For every action, there is an equal and opposite .....

Universal brotherhood is the concept of regarding the whole world as a member of s large single family. Racial and religious discrimination, cultural discrimination are some of the factors that hinder the universal brotherhood. Lack of .....

Tourists are the person who visits other's place to learn about their social, cultural life. They may also be people who visit different places just for the adventure and directly or indirectly contribute in the economic development of the .....

F ocal length is a well known word in optical physics. Focal length is distance over which the parallel rays either converge or diverge. For convex lens the focal length is positive. On the other hand, the focal length of concave lens is .....

The formula for ethyl alcohol or ethanol is C2H5OH or CH3CH2OH.

It is the second most simple alcohol and is represented as-

Unsaturated means that one or more carbon atom .....

Constitution of a nation may be defined as the fundamental law based on upon which all others laws are formulated. Some of the features of the present constitution of Nepal 2072 are: it divided nation into seven provinces it abolished monarchy .....

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Things that are handed to us by our ancestors and which have religious, cultural and natural significance maybe as national heritage. They are things which make citizen proud of their nation. Some of the ways to protect our national heritage .....

Solution : 1 Kg = 1000 gm 50 Kg = 50 * 1000 gm = 50000 .....

Solution : 3(x-y)2 - 10(x-y) - 8 Let x-y be a 3a2 - 10a - 8 = 3a2 - 12a+2a - 8 = 3a(a-4)+2 (a - 4) = ( 3a + 2 ) (a - 4) = [3(x-y)+2][x-y-4] = .....

Xenophobia actually means to fear or dislike other races, cultures, ways of life, and people not similar to one's .....

Solution : Let cost price be x and profit = 1/5 th of x = x/5 Selling price SP = Rs.48000 The, Profit = SP - CP or, x/5 = 48000 - x or, x/5 + x = 48000 or, 6x/5 = 48000 or, x = 8000 * 5 = Rs.40,000 Thus, the cost price is .....

Please ask a sensible .....

Solution : Cost price of 80 books at Rs.35 = Rs.35 * 80 = Rs.2800 Selling Price of (80 - 10) book =? Profit percent P% = 3.5% Then, P% = [(SP - CP)/CP]*100% or, 3.5 = [(SP - 2800)/2800]*100 or, 3.5 = [(SP - 2800)/28] or, 3.5*28 = SP - .....

Solution : SP = CP + P% of .....

A newborn human baby's brain weighs approximately 350 to 400 grams .....

Some features of invertebrates are : - All invertebrates do not have a spinal cord or vertebral column, instead, most of them possess an exoskeleton that encompasses the entire body. - Normally, these are tiny and don’t grow very large. - .....

Those animals, which have no backbones in their bodies are called invertebrates. Examples: i) Star fish                        .....

Fulcrum is a pivot point around which a lever is supported or turns.
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Machine is the device that makes our work easier, changes the direction of the force and does the work efficiently. .....

उत्तरः नेपाली जनताको कठोर सङ्घर्षबाट नयाँ संविधान प्राप्त गरेका छन्  । .....

Neighborhood means a surrounding area or region. Neighbourhood is the area of a town that surrounds someone's home, or the people who live in this area: .....

The branch of mathematics that deals with points, lines, shapes and space is called geometry. • Plane Geometry is about flat shapes like lines, circles and triangles. • Solid Geometry is about solid .....

नामको सट्टामा प्रयोग हुने शब्दलाई सर्वनाम भनिन्छ । जस्तैः म, हामी, तँ, तिमी, तपाईं, तिमीहरु, .....

सहरदेखि धेरै टाढा एउटा प्रदूषणरहित सुन्दर गाउँमा कल्पलता नाम गरेकी बुढिया .....

Human resource is the manpower who utilizes the available resources 

Giant bamboo is the world's tallest grass plant.
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Co-prime number is a set of numbers or integers which have only 1 as their common factor i.e. their highest common factor (HCF) will be 1. Co-prime numbers are also known as relatively prime or mutually prime numbers. It is important that there .....

Solution : (2x+3y,2x) =(20,x+4) Equating both co-ordinates, 2x = x + 4 2x-x = 4 x = 4 Again, 2x+3y = 20 or, 2*4 + 3y = 20 or, 8 + 3y = 20 or, 3y = 20 - 8 or, 3y = 12 or, y = 12/3 = 4 So, x = 4 and y = .....

The system of measurement in which distance is measured in centimetre, mass in gram and time in second is called CGS system. SI unit is the extended form of MKS system whicn is accepted all over .....

The system of measurement in which distance is measured in centimetre, mass in gram and time in second is called CGS system. SI unit is the extended form of MKS system whicn is accepted all over the .....

Solution : Force F = 10N mass m = 2 Kg Acceleration a = F/m = 10/2 = 5 m/s2 Initial velocity u = 0 m/s Time t = 5 seconds Final velocity v = ? we know, a = (v - u)/t or, 5 = (v - 0)/5 or, 5 = v / 5 or, v = 25 m/s Thus, the velocity .....

In 1825 George Stephenson built the Locomotion for the Stockton and Darlington Railway. This was the first public steam railway in the world and then in 1829, he built The Rocket which was entered in .....

Solution : f (x) = 2x - 3/5 Then, Inage of x = 4 f (4) = 2 *4 - 3/5 = 8 - 3/5 = 37/5 Preimage of 3, or, 3 = 2x - 3/5 or, 3+3/5 = 2x or, 18/5 = 2x so, x = .....

The approximate mass of Earth is 6 x .....