Students and Teacher's Forum

Students and Teachers Forum

1. Discuss the polar climate in terms of its location, climate,vegetation and lifestyle.

Introduction: Tundra region (polar region) is called cold desert because snowfall occurs instead of rainfall. Vegetation is poor and the population is very low. Location: The Tundra climatic region lies beyond the Arctic Circle(66oN) in the .....

2. Write the name of civilization that originated and developed in the tropical monsoon climatic region

The tropical monsoon climate extends between 5° and 30° latitude. It covers most of India, Bangladesh, Sri Lanka, Myanmar, Thailand and other parts of Asia and Northern Australia. In summer, the rain-bearing winds blow from sea to land but .....

3. What is the tropical grassland called in the Brazilian plateau and Orinoco basin, ? Write their economic importance.

The Brazilian Plateau is also known as the Brazilian Highlands. It has a very scenic and rich tropical savana that stretches for over miles. This grassland of the Brazilian Plateau is famously addressed as Cerrado. The main habitat types of the .....

4. Two pillars of 8 feet each of 4 faces shown of gate of stadium have one one prymid of hight 4 feet each having same base on their top.The base of each pillars is 6*6 ft if pillars with prymid are painted at rate rs 85per square feet what will be the cost?

Here, Pillar dimension = 6 ⨯ 6 ⨯ 8 ft One Pillar 4 faces area = 4 ⨯ 6 ⨯ 8 = 192 ft² Two pillar area = 2 ⨯ 192 = 384 ft² One pyramid area = 6 ⨯ √( (6/2)² + 4²) + 6 ⨯ √( .....

5. Find the angle between the minute hand and hour hand of a clock at quarter past 9

The hour hand completes one complete rotation in 12 hours. So,12 hours = 360o Now, When it is 9:15, the hour hand moves, 9 + 15/60 hours = 9.25 .....

6. Prove that: AB→//CD→ if AB →= 73 and CD→= -14-6 .

We have given, AB→= 73 and CD→= -14-6 . Taking CD →= -14-6 or, CD→= -2 73 or, .....

7. How much percent more than the cost price should a shopkeeper mark his good so that after allowing a discount of 25% on the marked price ,he gain 20%.

.....

8. What is drug?

Drug is a natural or synthetic substance which (when taken into a living body) affects its functioning or structure and is used in the diagnosis, mitigation, treatment, or prevention of a disease or relief of discomfort. Also called legal drug or .....

9. लाल कस्ताे पात्र थियाे ?

प्रश्नहरुको सिर्जनात्मक उत्तर दिने प्रयास गर्नुहोस् है .....

10. How can population education help young people? Explain.

The term population education refers to a process of developing awareness and understanding of the population situation amongst people. It is an educational program which provides learners with the study of population situation in family, .....

11. Find the area of a parallelogram whose diagonal are 24 cm and 10 cm whereas one side of the parallelogram is 13 cm.

Here, ACBD is //gm with AC = 24cm, BD = 10cm and AB = 13cm. We know diagonals of //gm bisects each other. So, OA = 1/2 of AC = 12cm and OB = 1/2 of BD = 5cm. .....

12. Points a and b are 90 km apart from each other on a highway. A car starts from a and another from b . If they go in the same direction , they meet in 9 hours and if they go in opposite they meet in 9/7 hours. Find speed of each cars

Let the speed of the car at a is x km/hr and the speed of the car at b be y km/hr. According to question, when they travel in same direction, they meet in 9 hours. In 9 hours, car at a reaches 9x km and car at b reaches 9y km. The cars .....

13. The area of four wall of a room is 7759 sq. M the breadth and the height of the room is 6.5meter and 3.5 respectively find the length of room.

Here, area of four walls of a room = 7759 m2 Breadth of the room (b) = 6.5 m Height of the room (h) = 3.5 m Let l be the length of the room. We know, Area of four walls = 2(l + b)h or, 7759 = 2(l + 6.5)3.5 or, l + 6.5 = 1108.43 or, l = .....

14. ‘ठग समातियो’ कथाको बारेमा लेख्नुहोस् ।

क) विक्रम र विराज सानैदेखि आफ्नो काम आफैँ गर्थे । ख) विक्रम खेलेर घर फर्कदा पनि दाजु घर .....

15. नेपाली नेपाली संस्कृतिबारे सारांश लेख्नुहोस् ।

नेपाल बहुजाति, बहुभाषी, बहु सांस्कृतिक, बहु धार्मिक बहु भौगोगिक विशेषता भएको .....

16. ‘हामी एउटै हौँ ।’ को सारांश लेख्नुहोस् ।

हामी एउटै एकाङ्की मनिक्रमराज शर्मा (२०२७–२०५४) द्वारा रचिएको एकाङ्की हो । यसमा .....

17. Localization and globalization go side by side, explain.

Well, globalization and localization are like the two wheels of the same cart. They go side by side. We know that the ideas, beliefs, theories, principles developed at the global level spread to the local level. And the things developed at the .....

18. How can we increase the concentration solution of the solution?

If we want to increase the concentration, we can Either (i) reduce the volume of the solution by evaporating or stripping off the solvent (and this is .....

19. Compare +2 and -2

Here, +2 > .....

20. If the circumference of great circle of a sphere is pie cm. Find ipts volume.. My exam so i need ans fast. Plz sir

Here, Circumference of the Great circle = π cm. or, 2πr = πcm or, r = 1/2 cm. Now, Volume of sphere = 4/3 .....

21. Solve by matrix method10/x +12/y=6 25/x -2/y=2

Here, Given equations are 10/x + 12/y = 6..............(i) and 25/x - 2/y = 2......................(ii) Writing them in matrix form, 101225-2 1/x1/y = 62 or, AX = B, ...........(a) Where, A = 101225-2, X = 1/x1/y and .....

22. Find the locus of a point which moves such that the ratio of its distance from the the point (-6,-7) and (7,4) is in the ratio of 1:2

Let P(x, y) be the point on the locus, such that which moves such that the ratio of its distance from the point A(-6,-7) and B(7,4) is in the ratio of 1:2. i.e; AP: BP = 1:2 or, AP/BP = 1/2 or, 2AP = BP .....

23. What is the boundary of dvelopment?

Your question is not clear. Please specify the .....

24. How can we make a clear line graph?

Here are some steps to draw clear line graph: 1. Consider adding comparison data to your line .....

25. Find the separate equation and also find the angle: x²- 2xytan2A - y²= 0.

Here, x2 - 2xytan2A - y2 = 0 or, x2 - 2.x. y tan2A + (y tan2A)2 - (y tan2A)2 - y2 = 0 or, (x - y tan2A)2 - y2(tan22A + 1) = 0 or, (x - y tan2A)2 - y2 sec22A = 0 or, (x - y tan2A)2 - .....

26. ‘प्रकृति र मानव नङ र मासु जस्तै हुन् ।’ व्याख्या गर्नुहोस् ।

परीक्षामा अलि लामो बनाएर लेख्नुपर्छ है । व्याख्या दुई अनुच्छेदमा लेख्नुपर्छ है .....

27. The sum of square distance of a moving point from the points (a,0) and (-a,0) is always 2a² units find the equation to the locus of the moving point.

Let P(x, y) be the moving point and the given points are A(a, 0) and B(-a, 0). By the question, AP2 + BP2 = 2a2 or, (x - a)2 + (y - 0)2 + (x + a)2 + (y - 0)2 = 2a2 or, x2 - 2ax + a2 + .....

28. चिथ्हि भनेको के हो ?

प्रश्नले भनेको कुरा प्रष्ट भएन त .....

29. Simplify:
1/(x - 2) + 4/(4 - x²)

Here, = 1x-2+ 44-x2 = 1x-2 - 4x2 - 22 .....

30. Simplify:
1/(x² - 1) - 1/(x - 1).

Here, 1/(x2 - 1) - 1/(x - 1). = 1/(x2 - 12) - 1/(x - 1). = 1/(x + 1)(x - 1) - 1/(x - 1). [ Since, .....

31. Simplify:
2/(x - 2) - 8/(x²- 4)

2/(x - 2) - 8/(x2 - 4) = 2/(x - 2) - 8/(x - 2)(x + 2) = [2(x + 2) - 8]/(x2 - 4) = [2x - 4]/(x2 - 4) = 2(x - 2)/(x + 2)(x - 2) = 2/(x + .....

32. If 4cosa + 2 = 0, find a.

4cosa + 2 = 0 or, cosa = -1/2 or, cosa = -(1/2) --------- [cos60° = 1/2] or, cosa = - cos60° The value of cos is negative at second and third quadrant. or, cosa = cos(180 - 60°) or, a = 180° - 60° or, a = .....

33. If sin2a + sina = 0, find a.

Second condition, 2cosa + 1 = 0 or, cosa = -1/2 or, cosa = - cos60° The value of cos is negative at second and third quadrant. or, cosa = cos(180 - 60°) or, a = 180° - 60° or, a = 120° Similarly, cosa .....

34. Sina+cosa=0 find a

Here, sina + cosa = 0 or, sina = - cosa The value of sin is negative at third and fourth quadrants. sina = sin(270° - a) or, a = 270° - a or, 2a = 270° or, a = .....

35. If √3 tana + 1 = 0, find a.

Here, √3 tana + 1 = 0 or, tana = -1/√3 or, tana = - tan30° The value of tan is negative in second and fourth quadrants. So, tana = - tan30° = tan(180° - 30°) or, a = 150° Similarly, tana = .....

36. tan12°tan36°tan84°tan108° = 1

LHS = tan12°tan36°tan84°tan108° = tan12°tan36°tan84°tan(90° + 12°) = tan12°tan36°tan84°(-cot12°) .....

37. Conveet 3500mn into meer

Please state the question .....

38. संकेतार्थक भनेको के हो ? उदाहरण सहित लेख्नुहोस् ।

संकेतार्थ पानी परे बाटो हिलो हुन्छ । धेरै खायो भने मोटाइन्छ । माथिका वाक्यमा पानी पर्नु कारण र .....

39. The listed price of a teacup is Rs. 75. A customer is given two successive discounts and paid Rs. 63.8 for it. If the rate of the first discount is 10%, find the rate of second discount.

Marked price of teacup = Rs. 75 First discount rate = 10% After discount, the price became 90% of the original marked price = 90/100 × 75 = Rs. 67.5 Selling price = Rs. 63.8 Difference between selling price and the price after first .....

40. If x + √2 = 1, find the value of (x - 1x)³.

Here, x + √2 = 1 or, x = 1 - √2 Now, substituting the value of x in (x - 1x)3 = [(1 - √2) - 1(1 - √2)]3 Rationalizing the denominator, = [(1 - √2) - 1(1 .....

41. Molecular formula of glucose.

The molecular formula of glucose is .....

42. अतिवृष्टि

यसपालि भएको अतिवृष्टिकै कारण बाढीपहिरो गएको छ .....

43. How can we find separate equation of y^2cos^2a-2xy+(1+sin^2a)x^2

Here, y2 cos2A - 2xy + (1 + sin2A)x2 = y2 ( 1 - sin2A) - 2xy + (1 + sin2A)x2 =y2 - y2sin2A - 2xy + x2 + x2sin2A = y2 -2xy + x2 - sin2A(y2 - x2) = (y - x)2 - .....

44. Find separate equations of
x²- 6xy + 9y²- 3x + 9y - 10 = 0

We have given equation, x2 - 6xy + 9y2 - 3x + 9y - 10 = 0 or, x2 - (6y + 3)x + (9y2 + 9y - 10) = 0 Which is in the form of ax2 + bx + c = 0, where, a = 1, b = -(6y + 3) & c = .....

45.

Complete the following paragraph by choosing the appropriate prepositions from the box below.

Hi everyone! I'm David and I live .......... Munich. .......... summer I like to travel .......... Italy, because of the weather and the people there. Last summer I took a plane .......... Munich to Rome. .......... the airport we went to our hotel .......... bus. We stopped .......... a small restaurant for a quick meal. The driver parked the bus .......... the restaurant. Nobody could find the bus and the driver, so we waited .......... the restaurant .......... one hour. The driver was walking .......... the small park .......... the restaurant which we did not know. So we were very angry .......... him. However, my holidays were great. We sat .......... camp􀂿 res and went dancing till the early morning.

Hi everyone! I'm David and I live in Munich. During summer I like to travel to Italy, because of the weather and the people there. Last summer I took a plane .....

46. 2cot120°.Tan135°cos180°-xsin120°cos180°=xtan150°

Here, 2cot120°.Tan135°cos180°-xsin120°cos180°=xtan150° or, 2 cot(180 - 60). tan(180 - 45). cos(180 - 0) - x sin(180 - 60) cos(180 - 0) = x tan(180 - 30) or, 2 (-cot60) . (-tan45) (-cos0) - x sin60.(-cos0) = x (-tan30) or, .....

47. Tan(270°+a)sin(180°+a)cosec(270°-a)=xsin(180°+a)-cos^2(90°+a)tan^2(450°+a)

Here, Tan(270° + a) sin(180° + a) cosec(270° - a) = xsin(180° + a)- cos2(90° + a) tan2(450° + a) or, (- cota) .( - sina) . (- seca) = x. (-sina) - (-sina)2 . (cota)2 or, - cosa / sina . sina .1/cosa = - xsina - .....

48. Prove that:
1 + cos2π7 cos5π7 = sin2π7 sin5π7

1 + cos2π7 cos5π7 = sin2π7 sin5π7 LHS = 1 + cos2π7 cos5π7 = - cosπ + cos2π7 cos5π7 [cosπ = .....

49. जान्नेको सङ्गत गरे जान्ने भइन्छ । (अकरण)

नजान्नेको सङ्गत गरे जान्ने भइँदैन .....

50. सुन्तलाको दानु पाक्यो । (पुलिङ्ग)

नपुङ्सक लिङ्गको लिङ्ग परिवर्तन हुँदैन .....