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Of course, being a social creature, humans have established certain codes of conduct. These condes of conduct are for living a civilized life with honour and respect. When people defecacte in an open area that invites flies and germs. And, flies .....

Here,     Total number of cards n(S) = 15     Prime numbers n(P) = {1, 3, 5, 7, 11, 13}                               i.e. n(P) = 6 Now,     .....

Here, Total number of tickets n(S)= 200 No of prizes on the tickets n(T)= 5 Probability of winning a prize by Ram n(P)= n(T)/n(S)                                   .....

Given, Students who liked to listen the poems n(P)= 60 Students who liked to listen the stories n(S)= 45 Students who liked both n(PnS)= 25 Students who disliked both n(PuS)'= 10 We know,  n(PuS)= n(P)+n(S)-n(PnS)       .....

Here, Yearly income of a serviceman= Rs 500000 Tax free amount= Rs 200000 Income invested in civil trust= 10% of 500000                                     .....

Solar power is the use of the sun’s energy to convert into electricity. The device which use solar energy are  i) Solar powered calculator.   ii) Solar powered .....

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Here, 1st expression= 4x-24                        =4(x-6) 2nd expression=x2-36                         = x2-62     .....

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1) Watch 2) Web 3) Whale 4) Wheel 5) Well 6) .....

Drainage is the system of pipes, channels, pits etc that carry water away to a point of discharge.

Sewage is waste water that is contaminated with human faeces and other biological and toxic .....

Surface water Underground water

Water pollution can be controlled through organized effort because people together can make anything possible. Together can build some projects, creat some rules and regulations to avoid water pollution and so on. If all of them participate .....

It is comfortable to travel in a car than in a bus because bus has more mass than car. More is the mass, more is the momentum and vice versa. Thus, more momentum gives strong jerk to the passenger than the car. This makes uncomfortable in the .....

Water resources in our country are considered as the holy water like Bagmati river. If water is polluted, the importance of such places lost its social values. Water is not only required for survival but also helps to build hydropower projects, .....

Government makes plans and policies and it should be implemented. This legal procedures bring the rules and regulations in the country. Anyone go for polluting water will have punishment system. That makes people to be aware and come under the .....

Here,           x - 1/y = 3 ....................i)           y - 1/y = 2 ....................ii) Multipying (i) & (ii),      (x - 1/y) ( y - 1/x) = 3 ⨉ 2 or, xy - x .....

Per capita income is the ratio of total GDP to the total population. Per capita income denotes average income of people in an area. Since it is a ratio of total gross domestic product to total population, the people with low income seems to have .....

Fig: .....

A frog cannot be kept in the class pisces because frog at the early age live in water and at adult stage live on land and water. So frog can live both on land and water. Hence, they are .....

Classification of animal is done to study the characteristics of animals of a certain species. When they are classified, it becomes easier to understand their features at a .....