Students and Teachers Forum

1. If 3 is added to the numerator of a fraction value of fraction becomes 1. When 3 is added to the denominator of the fraction, the value of the fraction becomes 1/4. What is the value of the fraction? Find it.

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2. List out the contribution of Indus valley civilization to the modern civilization.

The human civilization which was developed on the bank of River Sindhu is called the Indus Valley civilization. The contribution of Indus Valley civilization to the modern civilization are listed below: - The started adoption to live in groups and .....

3. In a group of 40 students, each studies at least one of the three subjects Nepali, English and Maths. All those who study English also study Nepali. 6 students study all the three subjects. 8 students study only Nepali. 16 students study English. 28 students study Nepali.
(i) Draw a Venn-diagram to illustrate above fact.
(ii) How many students study only Nepali and Maths but not English?
(iii) How many students study only Maths?

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4. A number consists of two digits. If the number formed by reversing its digits is added to it, the sum is 121 and same number is subtracted from it the remainder is 27. Find the number.

Let the number be '10x + y' Therefore, the number obtained by reversing it is '10y + x' Now, from given condition, (10x + y) + (10y + x) = 121 or, 11x + 11y = 121 or, x + y = 11 ..... (i) Also,  10x + y - ( 10 y + x) = .....

5. The present age of mother is equal to the square of the age of daughter after one year. If the age of daughter in 10 yrs hence will be 1 year less than age of her mother in 10 years ago. Find present ages.

Let the age of mother be x and that of daughter be y. From given condition, x = ( y + 1)2 ........(i) Also, Age of daughter 10 year hence = (y + 10) Age of mother ten years before = (x - 10) From given condition,  y + 10 = ( x - 10) .....

6. Our eye attracted to moving object. Why?

Since perceiving animacy and causality are important, it might be adaptive for motion changes generally to attract attention. When a person, animal, or vehicle changes the direction of motion, their intentions have often changed, which is another .....

7. Our tail and muscles to move ears are in the extinct condition. Why?

Our tail bone (also called as coccyx) and the muscles of the ear fall under the categoty of these organs. We call these as vestigial organs. Since these organs has no any use in our body, they are in the extict .....

8. Haeckel told that ontogeny repeats phylogeny.

You know ontogeny is the development of an embryo and phylogeny is an organism’s evolutionary history. So by ontogeny recapitulates phylogeny, Haeckel was saying that an organism’s development as an embryo a replay of its .....

9. A triangular land having area 336 sq.m and perimeter 84 m has length of an edge 26m. Calculate measure of remaining two sides.

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10. Lamarckism was rejected after Darwinism. Give reason

You know Lamarck explain that the enivronment in which living organism exists influence them and this influence change in their habitats and the structure of organism. He gave the example of giraffe, like a giraffe having to consistently reach up .....

11.  Study the given chemical reaction and answer the following:
Zinc+dil.sulphuric acid------>Zinc sulphate+hydrogen

a) change given word eqn. into balanced formula eqn.
b) indicate the state of reactant and product a S, sq. and g.
c) what happens when dil. hydrochloric acid is treated with metal used in above reaction? write with balanced chemical eqn.

a. Zn + H2SO4 → ZnSO4 + H2 b.  Zn(s) + H2SO4 (aq)→ ZnSO4 (aq)+ H2(g) c. Zn + .....

12. The length of the side of a square land is 70 feet. For the purpose of the real estate business, a path 10 feet wide inside the boundry of the land is made.
(i) Find the area of the path.
(ii) How many stones each of 2 feet length and 1.5 feet breadth are required to pave the path?
(iii) If a stone costs Rs 105, calculate the cost of paving the path.

(iii) Cost of paving the path = required number of stone x rate                                              = 1200 x 105   .....

13. A rectangular park is 66 m long and 44 m broad. Two crossing paths at right angle each of 3 m wide are running across the middle of the park. Calculate
(i) the cost of paving the bricks of size 20 cm by 15 cm on the paths at Rs 8 per brick.
(ii) the cost of covering the empty space with turfs at Rs 20 per sq. metre.

Cost of paving = number of bricks x rate                         = 10700 x 8                         = Rs. .....

14. A 55 m long and 35 m broad park is surrounded by a 2.5m wide path.
i. Find the area of the path.
ii. Calculate the cost of paving the path with stones at Rs 120 per sq. meter.

Now, cost of paving the path =  area of the path x rate.                                                = 218.75 x .....

15. The length and the breadth of a rectangular room are 12 m and 10 m respectively. How many pieces of carpet 4 m long and 2.5 m wide are required to cover its floor? If the cost of each piece of carpet is Rs 900, find the cost of carpenting the floor.

The area of a piece of carpet =  length x breadth (of carpet)                                                = 4 x .....

16. In a group of 54 people each likes music or dance. If the ratio of people who like music only and dance only is 5:4 and the number who like both is 18, find the number of people who like dance by using a Venn diagram.

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17. Find the perimeter and the area of the adjoining shape.

radius of semi-circle (r) = 70/2 = 35 cm. Hence area of the figure = 2 x (πr2) + l2                                         = 2 x (22/7) x .....

18. ‘देशविकासमा युवावर्गको आवश्यकता’ शीर्षकमा  बोलिने भाषण लेख्नुहोस् ।

‘देशविकासमा युवावर्गको आवश्यकता’ 
आदरणीय .....

19. P(h, k) lies on the line 2x - y = 3 and Q(k,h) lies on the line 3x - 4y = 1. Find the equation of the line passing through P and Q.

Dear Raman I kindly request you not to post additional questions on the other previously asked questions.  Please post additional questions as new .....

20. In Triangle ACD, A is the centre of circle, CD is a tangent, BC = 4 cm and CD = 8cm. Find length of AB. AB=AD( radius)

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21. Write two preventative measures of land slide and volcano.

The preventive measure are 1.Stay away from active volcanoes area. 2.Be prepared for the hazards that can accompany volcano like earthquake, landslide, flood .....

22. Write two effects of forests fire, land slide, earth quake and flood.

The two effects of forest fire are  1. It destroy the jungle. 2. Sometimes it also take human life and destroy human settlement if the fired area is near the village. The two effects of landslide are  1. It can slides away the fertile .....

23. What is own?

Own means belonging to oneself or itself.  For example : I own a car.                         I own a horse.                    .....

24. पर्वतारोहिहरुलाइ हिउँले खाने समस्या हुन्छ, किन?

पर्वतारोहण गर्दा अत्याधिक चिसो हुने भएको कारण तापक्रम हिमविन्दु भन्दा तल हुन्छ जसका कारण .....

25. The vertices of triangle ABC are (-2, 8), (1, 2), (7,-1). Find the equation of median through A.

Here to find the equations of line we need two passing points. We have one passing point (-2, 8) is given . Now find the next passing point by using  mid point formula ; mid point of ( 1, 2)  and ( 7, -2) you will get ( 4, 0) After .....

26. The height of solid cone is √(51) cm and slant height is 10 cm. Find the volume of the cone.

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27. वाक्य बनाउनुहोस् ः

वाक्य बनाउने सामग्री नै भेटिएन त मित्र, शब्दहरू लेखेर पठाउनुहोस् न ल .....

28. In triangle OQP, O is the centre of circle. PQ is tangent and P is point of contact. If OP = 5 cm, PQ = 12 cm. Find the length of OQ.

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29. तल दिइएको वाक्यबाट क्रियाविशेषण छुट्याउनुहोस् :
१) रेखा थापाको अभिनय निकै राम्रो छ ।
२) टेबुल माथि किताब छ, छिटो ल्याऊ ।
३) गिरिश फटाफट हिँड्यो ।
४) भरे म घरबाट आउँला ।
५) आज पानी पर्दैन ।

क्रियाविशेषण यसप्रकार छन् : (क) निकै (ख) माथि, छिटो (ग) फटाफट (घ) भरे (ङ) .....

30. What is Loktantra? What are its advantages? Explain.

The term Loktantra is the improved version of democracy. It is the rule of the people for themselves. In Loktantra, people are all in all in the nation. The elected representatives of the people form the government and rule the .....

31. How is loktantrik faith, norms and values are practised in our community? Describe.

The Loktantrik faith, norms and values are practised in our community in the following ways: - The election is one of the ways that people practise Loktantrik faith, norms and   values selection the right person in right place. - People .....

32. A ballet is given more priority than a bullet in Loktantra. Explain with logic.

It is true to say that a ballot is given more priority than a bullet in Loktantra. We know that ballots decide the fate of the people who are voting on it. For instance, deciding to vote for the selection of right person in right place ensure the .....

33. What is good governance? How is good governance maintained in Loktantra?

We know that Loktantra is an improved version of democracy. It is the rule of the people for the people and by the people. Loktantra gives priority to representative governance which is a way of maintaining good governance. Loktantra focuses on .....

34. How does loktantrik faith help to institutionalize loktantra? Explain.

Loktantrik faith refers to the belief of the people upon the Loktantra in which the sovereign power of the country is vested upon the people. It is the thought of the people upon Loktantra that it addresses the rights, voices and choices of the .....

35. Factorize:
3 x (-5+3)

   3 x (-5+3) =  3 x ( - 2)     [ operation inside brakects] = - 6.                 [ + x - = - .....

36. Explain the formation of nitrogen, methane,  ammonia, carbon dioxide.

In the laboratory,methane is prepared by heating a mixture of anhydrous sodium acetate and soda lime (NaOH ) CH3COONa + NaOH(CaO) → CH4 + .....

37. Explain any four problems of foreign trade in Nepal and offer five solution measures to them.

c. Limited market Things we export reach only in a very limited market. According to the open border and easy road network, they are more supplied to India Similarly, our border access to China is very .....

38. ''Though available in market , Nepali consumers hesitate to buy and use Nepali products''. Do you agree? State clearly.

Definitely, I do agree with the statement that Nepali consumers hesitate to buy and use Nepali products though available in the market. We know that Nepal is able to export goods to different countries in the world even the economy of Nepal is very .....

39. Ready made garments rank first in the foreign export of Nepal. What should be done to increase of other goods too? Suggest any five measures.

Definitely, readymade garments rank first in the foreign export of Nepal. To increase the rank of other goods in the foreign export, following things should be done: - The quality of the goods should be improved. - The advertisement of the goods .....

40. How do you defend the claim'' Landlockedness is the major obstacle for foreign trade in Nepal''?

Nepal is a landlocked and least developed country. In the past, Nepal’s foreign trade was directed toward India. At that time, about 95% of the .....

41. The radius and slant height of a cone are in the ratio of 3:5. TSA is 2112/7 cm2,
 find slant height.

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42. Find the HCF and LCM of:
(1-x2)(1-y2)2+4xy, 1-2x+y - x2y+x2

please send one question at a .....

43. The capacity of closed cylindrical water tank of height 2 m is 308000 litres. How many sq metres of metal sheet would be needed to make its base?

Given, The height of cylinder (h) = 2 m Volume (V) = 308000 litres You may know, 1 m3 = 1000 litres Let the metal sheet needed be 'x' m2 Then, x m2 * 2 m = 308000 litres 2x m3 = 308000 .....

44. For what value of 'a' makes a+1x8  is equal to x2 ?

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45. How do the Bheja, Badghar and Ghuthi strengthen co-operation and relation in the community? Present your views.

The word ‘Guthi’ has been derived from the Sanskrit word ‘Gosthf' which means society or union. Later, the Gosthi started to be called ‘Gothi’ and in course of its use and development, it is pronounced as .....

46. Nepal is multilingual, multi religion and multicultural country? How can you be a good citizen? Write six points.

We can be a good citizens in the following ways: - Following the rules imposed by the nation. - Taking care of the national heritages. - Raising voice against injustice. - Informing the concerned authouirty about the misconducts in the .....

47. What value of x makes the expression 4/x-2 undefined?

we have, 4/x-2. if you put x = 2 you will get 0 in denominator. ie. 4/2 - 2     = 4/0. So x = .....

48. If AB = 20 cm, BC = 21 cm, AC = 13 cm. Find the semi-perimeter.

Here,  AB = 20 cm, BC = 21 cm, AC = 13 cm. So, perimeter of triangle ABC = AB + BC + AC                                            .....

49.  तैँ रानी मै रानी को भर्ला कुवाको पानी भनेको के हो ? 

 यसलाई यस्तो वाक्यमा भन्यो भने सजिलो हुन्छ ।   तिमी पनि भलादमी म पनि भलादमी अब काम चाहिँ .....

50. लक्ष्मीप्रसाद देवकोटाका बारेमा भनिदिनुहोस् । 

 लक्ष्मीप्रसाद देवकोटा नेपालका महाकवि, मात्र नभएर विश्वकै एक महामानव हुन । उनको बारेमा .....