Students and Teachers Forum

1. Leaves are modified into throns or spines in xerophytes. Justify.

Leaves have larger surface area from where large amount of water is lost due to transpiration. If leaves are modified into thrones, surface area decreases and amount of water which is lost due to transpiration also decreases. Which helps plants .....

2. A body weights 50N in air and 45N when wholly immersed in water. Calculate
i. the loss in weight of the body in water.
ii. the upthrust on the body.
iii. volume of the body.

Loss in weight= 50 N - 45 N = 5 N Upthrust= 5 N You can not calculate volume from data .....

3. A stone which is dropped from the top of a building reaches the ground with a velocity of 49 ms-1. If the acceleration due to gravity is 9.8 m s-2, calculate the time for which the stone is falling freely. 

U = 0 m / sec V = 49 m / sec a = 9.8 m / sec 2 Now use v = u + .....

4. Nose bleeding occurs as we move towards high attitude, why? What is relative density?

.....

5. Define freefall. The mass of the Jupiter is 319 times greater than the mass of the earth and the radius is 11 times greater than the radius of the earth. If the acceleration due to gravity on the earth surface is 9.8m/s2, calculate the acceleration due to gravity on the surface of the Jupiter.

The mass of Jupiter is 314 times than that of the earth and its radius is 11.35 that of the earth. If acceleration due to gravity is 9.8 m/s2 on earth, find its value on Jupiter. Given: Mass of Earth =Me Mass of Jupiter =M

6. Q.No 4.
Three objects with different densities A,B and C are in water as shown in the figure. Now answer the following questions.
i. Which object has higher density than the water?
ii. If the mass of object A is 1 kg, how much kg of water is displaced by the object?
iii. Which law is applicable for object B?

Where is the .....

7. Which law of liquid can be verified with the experiment given in the diagram? What will happen to test if some amount of salt is dissolved in water of the can? Give reasons.

We can verify Archimedes principle from this experiment. If more salt is added, upthrust wil increase and spring balance will show less .....

8. Solve: 2(x2 + 1/x2) - 9(x + 1/x) + 14 = 0

.....

9. Solve: 16 sin2θ + 16 cos2θ = 10 [ 0 ≤ θ ≤ 2π ]

.....

10. Difference between force and pressure in any two points.

.....

11. What is density? What types of object floats in water?

.....

12. Prove that liquid pressure (P) = hdg.

.....

13. If PQRSTU is a regular hexagon, show that PR→+ PS→+UP→+TP→= 3PQ→

 

There are double R in your .....

14. If 4 sinB = 3 sin(2A + B) then prove:
7 cot(A + B) = cotA

We have,  4 sinB = 3 sin(2A + B) or, 4 sin[(A + B) - A] = 3 sin[(A + B) + A] or, 4 [ sin(A + B)cosA - cos(A+B)sinA] = 3 [ sin(A + B)cosA - cos(A+B)sinA] or, sin(A+B)cosA = 7 cos(A + B)sinA or, cosA/ sinA = 7 cos(A + B) / sin(A + B) So, .....

15. A man was flying a kite with a string of 120 m at an angle of 30 with the ground, standing opposite to a building of 14m height. Another man at the top of the building was flying the kite at an angle of 45 with horizontal. Find the length of the string if two kites meet at a point.

.....

16. ∠W and ∠Y are 90.

Prove: WO = PY 

XO and ZP are perpendicular to YW.

Please check your question once. Something is wrong or given information is insufficient to solve .....

17. खाने मुख लाइ जुङगा ले छेक्दैन।

सानै देखि गित संगितमा रुचि भएका हिमाल खडका अहिले अाएर मेलेसियाकाे पेनाङ मा एउटा सानाे .....

18. Find the value of x:

sec x - tan x = √3

.....

19. A  boat takes 8 hours to travel 12 km upstream and 40 km downstream. If it can travel 16 km upstream and 32 km downstream at the same time. Then find the velocity of a boat in a still lake and the velocity of the stream.

.....

20. What is gravity? Weigth of an object varies place to place on the earth, why?

.....

21. Derived the motion related formula v2 - u2 = 2as.

.....

22. Write any two differences between velocity and speed.

.....

23. Write any two reasons of using S.I. system. Write SI units of weight.

.....

24. What is one kg mass? Write any two differences between fundamental and derived units.

.....

25. What is weight? Write any two importance of measurement in daily life.

.....

26. Write a letter to the editor of the The Rising Nepal to include the relevance of school graduates in community service.

20th, Falgun, 2074 Jit Jung Marg Thapathali, Kathmandu To,      The editor      The Himalayan Times       Kathmandu Dear sir, 

          .....

27. Why is domestic violence a social crime? What is your role to control it? Explain.

Since domestic violence is the cause of the social crime it is highly important to find the solution to the violence at home. Some of the methods that may be used in controlling domestic violence are: end of discrimination between the sons and .....

28. Prepare an editorial for any national daily on 'Untouchability as a great social problem in rural area'.

Untouchability is the shame of modern Nepal that hinders the development of nation. In 1962, a law was passed making it illegal to discriminate against other castes led all caste to be equally treated by the law. However, the Nepalese caste system .....

29. What is meant by untouchability? Write its causes and list out their possible solutions.

Some of the methods that may help in controlling this kind of practice are: Strict implementation of the laws literacy public awareness good governance increasing the access to the recent developments in the communities where such .....

30. Present the following data in a Pie-chart.
Continent Area in Sq. Km.
Asia 44,57,9000
Africa 30,06,5000
North America 24,25,6000

When you calculate the areas in degree your pie chart should look .....

31. Federalism can be the best opportunity for the development of nation. It will be a great curse for our nation if it is not managed properly. Make  clear about this concern in four points.

Federalism may be defined as the practice in which the local governments are given the full authority to formulate the developmental plans for the upliftment of the respective region. In such system, there is a multi-tier government under .....

32. बोध प्रश्नउत्तरको नमुना :
तलका अनुच्छेद पढी अन्त्यमा सोधिएको प्रश्नहरुको उत्तर देऊ :
जीवहरूमध्ये मानिस सर्वश्रेष्ठ प्राणि हो, जसको मस्तिष्क अन्य प्राणिका तुलनामा निकै विकसित छ । मानिसमा तर्क गर्ने शक्ति छ भने पृथ्वीका अन्य जीवहरू पूर्ण रूपमा प्रकृतिमा नै निर्भर छन् । प्रकृतिमा जे जस्ता स्थल वा गुफा छन् तिनीहरू त्यहीँ बस्छन् । फलफुल र जीवजन्तुको सिकारबाट आहार प्राप्त गर्दछन् । अन्य बाहिरी साधानको प्रयोग नगरी आफ्नै शरीरका अङ्गबाट आत्मरक्षा गर्नु तिनको सामथ्र्य हो । मानिसको सामथ्र्य निकै विशाल छ । उसले आफ्नो ज्ञान र श्रमद्धारा प्राकृतिक साधन र स्रोतलाई आफ्नो अनुकुल बनाउँदै आएको छ । मानिसले अन्न, फलफुल र अन्य खाद्य सामग्री उत्पादन गरेको छ । आत्मरक्षा र अन्य निर्माणकार्यका लागि उसले विभिन्न हातहतियार बनाएको छ । रोगबाट बच्न मानिसले औषधीमुलो गर्छ र आफ्नो ज्ञान र सीपको विकास गर्नुको साथै अन्य भौतिक सुविधाहरूको वृद्धि पनि गर्दै जान्छ । मानिसका सृजनात्मक क्षमता, सीप र प्रविधिलाई उसका ज्ञान र सामाजिक विकासका स्तरले निर्धारण गर्दछन् । 
प्रश्नहरू ः
क) मानिस अन्य प्राणिभन्दा विशिष्ट मानिनुको कारण के हो ? 
.........................................................................
..........................................................................
ख) जीवजन्तुहरू आफ्नो आहार कसरी जुटाउँछन् ? 
..........................................................................
..........................................................................
ग) जीवजन्तुले आफ्नो रक्षा कसरी गर्दछन् ? 
.............................................................................
...............................................................................
घ) मानिसले केका लागि हातहतियार बनाएको हो ? 
............................................................................
............................................................................
ङ) ‘सर्वश्रेष्ठ’ र ‘आहार’ शब्दहरूकोे अर्थ के हो ? 
............................................................................
............................................................................

 

.....

33. बोध प्रश्नको उत्तर लेख्दा ध्यान दिनुपर्ने कुराहरू :

.....

34. बोध :

.....

35. कथालेखनको नमुना :
एउटा घोडा बछेडो ...आमाले उसलाई एक बोरा गहुँ पिनेर ल्याउन अ¥हाउनु......बाटोमा एउटा नदी भेट्टाउनु..... उसले गोरूलाई नदी तर्न सकिन्छ कि सकिन्न भनेर सोध्नु ...गोरूले पानी धेरै छैन तर्न सकिन्छ भन्नु...नदी तर्न लाग्दा लोखर्के पनि भेटिनु...लोखर्केले पानीमा सबै कुरा बताउनु...आमाले गोरू अग्लो र लोखर्के सानो भएको कुरा बताई आफ्नो बुद्धि पनि लगाउनु भन्नु... बछेडोलाई कुरा बुझ्नु...ऊ नदी तरी पारी पुग्नु र काम सकेर फर्कनु ।

.....

36. कथा लेखन :
कथा लेख्ने तरिका :

.....

37. संवाद लेखन :
संवाद लेख्ने तरिका :

.....

38. संवाद लेखन : 
संवाद लेखनको नमुना : 
पुस्तकालयको महत्व शीर्षकमा संवाद लेख्नुहोस्

.....

39. Why is law formulated by legislature considered more important?

The legislature is one of the three main organs of a government, the others are Executive and Judiciary. It is responsible for the formulation of laws in the country. It is known as the factory of law formulation. It is believed that .....

40. Where is Bhimsen Stambha?

Look at the picture below. The picture above is of Dharahara. Dharahara is known as Bhimsen Stambha. It was located in Sundhara, Kathmandu. It was demolished in 2072 earthquake. It has not been reconstructed .....

41. जोडा मिलाऊ :
काल                                अनेकार्थक शब्द
दिन - दीन                        पर्यायवाची 
उपकार - अपकार              श्रुतिसमभिन्नार्थक 
बाटा - मार्ग                       अनेकार्थक 
ताते - चिसो                      विपरीतार्थक 
 कर                                  श्रुतिसमभिन्नार्थक 

.....

42. "Romance at short notice was her specialty." What does this mean and how does it reveal Vera's character ?

The story within the story is the one told by Vera to Framton Nuttel. It is a story about an accident that had happened to the three man of the house. Veera's uncle, and her aunt's two brothers. The open window is a place through which they went out hunting but that particular outing turned out to be their last journey. This entire story is a cunning little plot what Veera made a play a prank on the mentally ill Framton. Its objective is to feel his anxiety. The entry of the so-called 'dead' character in the final scene makes Nuttel mad as he escapes, thinking there to be ghosts. The last line of the story tells us that Vera loves to make up stories with little clues. ("Romance at short notice was her speciality.") This is how the writer maintains that the story told by Vera is false.

The other story is the story of Framton who has a mental illness. As he gets advice from his sister, he leaves for the village to have some treatment. But, when he hears the story by Vera and happens to the so-called dead people with his bare eyes, he gets frightened as if he saw ghosts. Then, he runs away from the house leaving the impression of rude, uncivilized person.

The above story suggests that Vera is caring as she advises her brother to get some treatment for his mental illness. She is also capable of making the extravagant stories full of mysteries. She is also an intelligent and creative .....

43. जीवनीलेखन :
जीवनीलेखनको नमुना :

.....

44. जीवनी लेखान :
जीवनीलेख्ने तरिका :

.....

45. घरायसी चिठी लेख्ने तरिका :

.....

46. चिठी लेखन
घरयसी चिठीको नमुना
स्वास्थ्यका लागी सफा पानीको प्रयोग् गर्ने सल्लाह दिदै आफ्नो साथिलाई चिठी लेख्नुहोस् । 

.....

47. In the figure, ABCD is a parallelogram, E is a midpoint on AB. If DE = 6cm , CE = 8cm and ∡DEC = 90∘ , then find the area of parallelogram ABCD.

Area of △CDE  = 1/2 base ⨯ height                           = 1/2 ⨯6cm ⨯8cm                       .....

48. In the given figure, QS//PT, the area of ∆QST is 45sq.cm, ∠QRS = 90∘ ,QR = 4cm and RS = 15cm, find the area of quadrilateral PQRS.

Here, Join Q & T. Area of △QPS = Area of △QST  = 45cm2  [ Can you write reason?] Now, area of △ QRS = 1/2 ⨯QR . RS  [ Since, area of triangle = 1/2 base ⨯ height.]         .....

49. विदेशमा रहेका आफ्ना काकालाई स्वदेशमा फर्कन आग्रह गरी चिठी लेख्नुहोस् ।  

.....

50. What are two basic symbols used in binary number system?

Two basic symbols used in binary number system are 0 & .....