Students and Teachers Forum

1. Physical properties of blue vitriol.

and also write it's state.

Physical properties of blue vitriol. 1.    The anhydrous salt is colourless but the hydrated salt is blue in colour. 2.    It readily dissolves in water but is insoluble in alcohol. It is available in the .....

2. Who got golden boot in 2010 fifa world cup?

Germany's Thomas Müller has won the Golden Boot after finishing as the World Cup 2010 top scorer and has also been named as the young player of the .....

3. Find the co-ordinate of mid-point of a line segment joining the points (x1,y1) and (x2,y2).

The co-ordinate of mid-point of a line segment joining the points (x1,y1) and (x2,y2) is given by,  (x, y ) = [ (x1 + y1)/2, (x2 + .....

4. Find the co-ordinates of a points which divides the line segment joining the points (x1, y1) and (x2, y2) in the ratio of k : 1 internally.

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5. तलका शब्दहरुको अर्थ लेख्नुहोस । 
विधुर, सद्भाव, बेचैनी, हिरा, याचक, निर्भीक, लघार्नु

१. विधुरः पत्नी मरेको पुरुष सद्भावः असल विचार बेचैनीः अशान्ति, व्याकुलता हिराः बहुमूल्य .....

6. समूह 'क' मा दिइएको शब्दहरुको अर्थ समूह 'ख' बाट पहिचान गरी उत्तरपुस्तिकम लेख्नुहोस ।
समूह 'क'                               समूह 'ख'
विधुर                                  बहुमूल्य रत्न
सद्भाव                               अशान्ति, व्याकुलता
बेचैनी                                 विद्वन्
हिरा                                   दक्षता
                                         पत्नी मरेको पुरुष
                                         असल विचार

विधुरः पत्नी मरेको पुरुष सद्भावः असल विचार बेचैनीः अशान्ति, व्याकुलता हिराः बहुमूल्य .....

7. State and prove internal section formula by the vector method

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8. If f = {x, 5x - 13}, g = {x, (2x + 7)/3} and g-1(x) = fof (x), find the value of x.

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9. If f(x) = (x + 3)/2, g(x) = 2x - 3, prove that fog(x) = fog(x).

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10. It is given that the function f(x) = 3x + 5 and fog(x) = 12x - 7. If  g-1(x)=2. Find the value of x.

Here,  f(x) = 3x + 5 And,  fog(x) = 12x - 7  or, f(g(x)) = 12x - 7 or, 3g(x) + 5 = 12x - 7 or, g(x) = 4x - 4 Now, for g-1(x) We have,  y = 4x - 4 or, x = (y + 4)/4 Interchanging x and y, we get,  y = (x + .....

11. If f(x) = 2x + 5, g(x) = (3x -1)/2 and fg-1(x) = f(x) then find the value of x.

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12. ‘देशभक्ति’ शीर्षकमा १०० शब्द लेख्नुहोस् ।

देशभक्ति
हामी नेपालीका लागि सारा नेपाल आफ्नै घर हो .....

13. देश्भ​क्ति को बारेमा निबन्ध लेख्नुहोस |

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14. विद्यालयले आयोजन गरेको कुनै कर्यक्रम्को बारेमा आफ्नो साथिलाइ छित्ति लेख

साथीलाई चिठी
लगनखेल, ललितपुर २०७५—०५—०५
प्रिय साथी, सुमधुर .....

15. The diameter of a spherical ball is 35m, find its surface area and the volume.

Here d = 35 m now use surface area = π d2 / 4 and   volume = 1/6 π .....

16. ( Sin A + Sin 2 A) / ( 1 + Cos A + Cos 2A )

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17. Evaluate: a+12÷1+a1-a+aa2+a+1

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18. State any five strategies proposed by the current 14th plan of Nepal for the development of road.

- The development of road networks between the provincial capital. - The extension of the roads in the districts and villages which have not been connected with road networks. - The construction of Postal Highway and Mid-Hill Highway will speed .....

19. द्स्फ्

प्रश्नले भन्न खोजेको कुरा प्रष्ट भएन त साथी .....

20. The radius of the conical tank is 75% of its height if the conical tank occupies 4116000 liters of water, find the curved surface area of the conical tank

Given that r = h x 75 / 100 or, r = 3/4 h and volume = 4116000 liter = 4116000 / 1000 = 4116 m3 now ,  v = 1 / 3 ʼπ x r2 h or, 4116 = 1/3 x 22 / 7 x ( 3/4 h ) 2 x h after solving this, you will get h. and from .....

21. Principal (P) = Rs. 7500, time (T) = 5/2 years, rate (R) = 20%, find compound interest.

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22. Principal (P) = Rs. 4800, time (T) = 3/2 years, rate (R) = 10%, find compound interest.

here  P = 4800 t =1 year + 6  months  r = 10 % A = P ( 1 + R / 100 )t x ( 1 + mr / 1200 ) =  4800 ( 1 + 10 / 100)1 ( 1 + 6 x 10 / 1200 .....

23. मानिस्ले कुन रुपमा कल्पनलाई साकार पाछे?

मानिसले पहिला कल्पना गर्छ अनि त्यस विषयमा अनुसन्धान गर्न थाल्छ । धेरै मिहिनेत र .....

24. मानिसले कुन रुपमा कल्पनालाई साकार पाछे?

मानिसले पहिला कल्पना गर्छ अनि त्यस विषयमा अनुसन्धान गर्न थाल्छ । धेरै मिहिनेत र .....

25. If 4/5 of the height of the tower is 120m,find the height of 5/6 of the tower.

Here 4/5 th of height of tower = 120 m height of tower = 120 x 5 / 4 = 150m now, 5/6 of height of tower = 150 x 5/6 = 125 .....

26. When the speed of a motorbike is 60km.Per hour,it covers a distance of 128km in a certain interval of time.What must be the speed of mototbike which covers a distance of 160km in the same interval.Of time

bike covers 128 km with the speed  of 60 km / hr it covers 1 km with the speed of 60 / 128 km / hr it covers 160 km with 60 / 128 x 160  = 75 km / .....

27. The bus fare for a distance of 200 km is Rs.480. If the rate of bus fare remains the same, find the bus fare for a distance of 165km.

Bus fare for a distance of 200 km = Rs. 480 Bus fare for a distance of 1 km = Rs. 480 ∕ 200                                           .....

28. The cost of 5kg of flour is Rs.140, what will be the cost of 16kg?

Cost of 5 kg of flour = Rs. 140 Cost of 1 kg of flour = Rs. 140 ∕ 5                                  = Rs. 28 Hence, cost of 16 kg of flour = Rs. .....

29. What is matter made of?

Every matter is made of very small and indivisible particles called atoms. These atoms are the particles which can not be broken Or divided by any .....

30. A load of 400N is lifted by a first class lever in which the load is at the distance of 0.2m and the effort is at the distance of 0.6m from the fulcrum. If 150N effort is required to lift the load,what will be its MA,VR and efficiency?

Here,   load = 400 N effort = 150 N load distance = 0.2 M effort distance = 0.6 M now, MA = load / effort = 400  / 150 = 2.66 VR = effort distance / load distance = 0.6 / 0.2 = 3 and efficiency = MA / VR x 100   = 2.66 / .....

31. Write an oratory on the value of raksha bandhan and importance in 300 words.Sir please include best sentences

Rakhi is a sacred thread embellished with sister's love and affection for her brother. On the day of Raksha Bandhan, sisters tie rakhi on the wrists of their brothers and express their love to them. After receiving the rakhi from a sister, a .....

32. What are the two characteristics of freely floating hydrophytes?

 

The characteristics of freely floating hydrophytes are: 1. They have light body. 2. They have air-spaces throughout their bodies. Pistia, duckweed and water-hyacinth are some examples of freely floating plants. Fig: .....

33. Simplify:
 7x2y38a3b4×12ab21xy÷3a2b24x3y2

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34. Simplify:
 18x2y415a3b2×25x2yz6a2bc2÷5x4y23a4b4c

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35. Simplify:
 x3c2a4y2 ÷x2y3a3b2×x y4c2z2

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36. Find the intercepts made on the axes by the equation x-2y-2=0 and find its slope also.

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37. Simplify:
 4a4b26x2y4÷12a3c29a4y-3z×3a3x2 yc2b2y2z

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38. When was UNICEF established?

UNICEF stands for United Nations International Fund for Cultural and Educational Fund. It was established on 11th Dec.1946 .....

39. Find the equation of a straight line passing through the point (1,2) and making an intercept of 3 on the positive y-axis.

Here, intercept is 3 , so the point is ( 0 , 3 ) =( x1 , y1), ( say) and ( x2,y2)  = ( 1,2) now, equation of circle is  Can be written as y - y1  = ( y2 - y1 ) / ( x2 - x1)  x  ( x - x1) now on .....

40. Solve:
x3 + 2x2 - 3x - 15 = 0

Please recheck the .....

41. How can you cooperate with senior citizens in your family and neighbourhood? State two very important roles.

We have studied that senior citizens are the precious wealth of the nation. Definitely, they are persons with ample knowledge, life skills, experiences, etc. They have contributed a lot to the betterment of the nation and its people. They can .....

42. If the end of a diameter of the circle x2 + y2 - 4x - 6y -24 = 0 is (8,4), show that the co-ordinates of the other are (-4 , 2).

Here, x2 + y2 - 4x- 6y + 24 = 0 is the equation of circle or, x2 - 4x + 42 - 42  + y2 - 6y + 32 - 32  + 24 = 0 or, (x - 2)2 -16 + (y - 3)2 - 9 +  24 = 0 or,  (x - .....

43. उच्च अदालतकाे मुख्य न्यायाधिश र न्यायाधिश हुन के कस्ता याेग्यता अावश्यक हुन्छन ?

क) कानुनमा स्नातक उपाधि प्राप्त गरी जिल्ला न्यायाधीशको पदमा पाँच वर्ष काम गरेको वा कानुनमा .....

44. What sort of work could Nepali people do to maintain peace and cooperation at this situation in Nepal? Describe in any five points.

- Every individual should follow the law and order of the country. - Every society should formulate the code of conduct so that peace culture can be maintained well. - The society should abolish the malpractices such as untouchability, gender .....

45. The speed of a boat is 5km per hr in a still water and the speed of strem is 3km per hr. If the boat takes 3 hr to go to a place and come back, then find the distance between two places.

Here,  The speed of boat in still water is 5km/hr  and speed of strem is 3km/hr. So, while going upstrem, speed of boat = 5 - 3 = 2km/hr  and  While going downstrem, speed of boat will be 5 + 3 =8 km/hr. Let the distance .....

46. Find the value of x
 
questionimage

Here, 1.∡A = ∡FCD = 85o                    [ ∵ ABCF is a cyclic qd.and ∡FCD  is opposite ext.angle of ∡A.] 2.∡A+  ∡D = 180o        .....

47. What can we learn from the deeds of national heroes? Write.

We know that national heroes are those people who have contributed a lot to the welfare of the nation and its people. The following lesson should be learnt from the life of our brave warriors: - We should learn their tireless journey for the .....

48. Define crystallization point.

Crystallization is defined as a process by which a chemical is converted from a liquid solution into a solid crystalline state. Crystalization point is the temperature at which crystal structure of the given solution is .....

49. मध्यपहाडी लोकमार्गबारे छोटो परिचय प्रस्तुत गर्नुहोस् ।

पहाडी प्रदेशका २३ जिल्ला, २१५ बस्ती र झन्डै ७० लाख जनता यस सडक सञ्जालबाट .....

50. दिगो विकासका आयामहरु उल्लेख गर्नुहोस्।

दिगो विकासका आयामहरुलाई निम्न चार्टद्वारा प्रस्ट पारिन्छ: दिगो विकासका धेरै आयामहरू छन् .....