Students and Teachers Forum

1. पाठमा दिएको व्यापारिक चिठीको प्रत्युत्तरमा लेख्ने चिठीको नमुना तयार पार्नुहोस् ।

सर्वप्रथम पठाउनेको नाम र ठेगाना, त्यसको मुनि मिति लेख्ने, मिति लेखेको दुई पङ्क्ति तल बायाँतिर .....

2. In the given figure alongside, AO = OD and ∡BAO = ∡ODC, prove that:
i)∆AOB ≅ ∆COD
ii) OB = OC.

Here, Given:  AO = OD and ∡BAO = ∡ODC,  To prove:∆AOB ≅ ∆COD & OB = OC. Proof: 1. In triangles AOB &COD   i.∡BAO = ∡ODC(A), i. Given ii.AO = .....

3. (1+ cos a)/(1- cos a)= cot2 a/2

Here, LHS = (1 + cosA)/(1 - cosA) = (1 + 2cos2A/2 - 1)/(1 - 1 + 2sin2A/2)   [ Since, cosA = 2cos2A/2 - .....

4. (1+ sec a)/ tan a = cot a/2

Here, LHS = (1 + secA)/tanA = (1 + 1/cosA) /tanA   [ Sicnce, secA = 1/cosA.] = (cosA + 1)/cosA x cosA/sinA    [ Since, tanA = .....

5. (2 tan x/2) /(1+tan^2 x/2) = sinx

.....

6. Cos a=4 cos^3 a/3 -3 cos a/3

We know,  Cos3A = 4cos3A - 3cosA Replacing A by A/3, we get Cos3.A/3 = 4cos3A/3 - 3cosA/3 or, CosA = 4cos3A/3 - .....

7. (sin a/2- cos a/2)^2=1- sina

Here, L.H.S. is in the form of (a - b)2, So, you can write the expression as = (sin2A/2) - 2 (sin A/2) (cos A/2) + (cos2A/2) = (sin2A/2) + (cos2A/2) - 2 (sin A/2) (cos A/2)  = 1 - sinA  .....

8. Name the four biggest and the four smallest countries in Asia.

The following nations are the smallest Asian nations: The Maldives (Area 300 Km2) Singapore (Area 716 Km2) Bahrain (Area 756 Km2) Brunei (Area 5765 .....

9. Prove that P.E=mgh

Suppose, The object is placed at height h.  Work done=Force x Displacement ..(i) Then, Force= mass x acceleration Here acceleration is due to gravity, Then, Force = M x g .................(2) From (1) and (2) Work done= M . g . .....

10. Prove that: 2sin 75°×sin15°=1/2

Here, LHS = 2sin 75°×sin15° = 2sin(90 - 15)°×sin15° = 2cos15°×sin15°   [ Since, sin(90 - A) = cosA.] = sin(2.15o)    .....

11. If a+b+c=π°,prove that:
tanb tanc + tanc tana +tanc tana =1+sec a sec b sec c

.....

12. When did Nelson Mandela die?

Nelson Mandela died on 5 December .....

13. A house uses 4 bulbs of 100 watts for 5 hours a day a television of 60 watts for 2 hours a day and a computer of 80 watts for 5 hours in a day what is the consumad electricity units in a month

     Electricity consumed in a day = (4 x  100 x 5 + 60 x 2 + 80 x 5) watt-hour                                           .....

14. A fish can not be killed. (True or false)

A fish can be killed, and we consume .....

15. In the given figure PQRS, SP = RQ and RP = SQ. Prove that RT = ST.

1. In ∆PQS and ∆PQR (i) SP = RQ (S) [ Given] (ii) RP = SQ (S) [Given] (iii) PQ =PQ (S) .....

16. Why is sketch map useful?

A sketch is a basic drawing of something where only the major features of it are drawn. It is drawn from observation only. No measurements are taken. Sketch maps are free-hand maps which are drawn from memory and help us to organize spatial .....

17. Give short introduction to any six types of map.

4. Climatic Map: A climatic map shows information about the climate of different areas. For example, it shows areas which receive more rainfall or snow, or which have dry weather. It uses colors to depict areas with different climate. 5. .....

18. What is scale? How many types of scale are there in maps? Write with example

Map scale refers to the relationship between distance on a map and the corresponding distance on the ground. In a map there are generally three kinds of scale: Verbal Scale: Verbal scale makes use of words language for representing scale-related .....

19. Simplify:
4xy (2x+3y)

Here, 4xy(2x + 3y) Opening the bracket, we get = 4xy.2x + 4xy.3y = 8x2 .....

20. जनसङ्ख्या वृद्धिको असरबारे लेख्नुहोस् ।

यसलाई पढेर, बुझेर आफ्नै शैलीमा लेख्ने अभ्यास गर्नुहोला है त .....

21. पर्यटनको महत्त्व (निबन्ध)

दिइएको व्याख्या, विश्लेषणलाई पढ्नुहोस् र आफ्नै शैलीमा सिर्जनात्मक उत्तर लेख्ने प्रयास .....

22. जनसङ्ख्या वृद्धिको बारेमा लेख्नुहोस् ।

दिइएको विषयवस्तुलाई मिलाएर आफ्नै शैलीमा सिर्जनात्मक उत्तर लेख्ने प्रयास गर्नुहोस् है .....

23.

Did I Miss Anything?
 

Nothing. When we realized you weren’t here

we sat with our hands folded on our desks

in silence, for the full two hours

Everything. I gave an exam worth

40 percent of the grade for this term

and assigned some reading due today

on which I’m about to hand out a quiz worth 50 percent

 

Nothing. None of the content of this course has value or meaning

Take as many days off as you like:

any activities we undertake as a class

I assure you will not matter either to you or me

and are without purpose

 

Everything. A few minutes after we began last time

a shaft of light suddenly descended and an angel

or other heavenly being appeared

and revealed to us what each woman or man must do

to attain divine wisdom in this life and the hereafter

 

This is the last time the class will meet

before we disperse to bring the good news to all people on earth.

 

Nothing. When you are not present

how could something significant occur?

 

Everything. Contained in this classroom

is a microcosm of human experience

assembled for you to query and examine and ponder

This is not the only place such an opportunity has been gathered

 

but it was one place

And you weren’t here

Tom Wayman

Match the words and the meaning.

Words                    Meanings

assign                   to make something known to somebody

descend                 to bring people, ideas or things together as a group

reveal                    to provide a person a particular task

assemble                   to come or go down from a higher to a lower level (of a hill, etc. )

 

Assign:  to provide someone a particular task Descent: to come or go down from a higher to a lower level (of a hill, etc. ) Reveal: to make something known to somebody Assemble: to bring people, ideas or things together as a .....

24. Why change occur during chemical reaction?

In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants.  When a new substance is formed, .....

25. The given pie-chart shows the composition of different materials in a type of cloth in percent.
i) Calculate the % of each material found in the cloth.
ii) Calculate the weight of each material contained by a bundle of 50 kg of cloth.

Here, i) We know that: 360o = 100% or, 1o = 100/360 % So,  Cotton = 90o = 90 x .....

26. Write format for CV and a formal letter.

Formal letter format

.....

27. Find the value of x,if the mean of 15,18,22 ‌‌,2x,2x-3,3x-5,23 is 20.

Here, Mean of 15, 18, 22 , 2x, 2x-3, 3x-5, 23 is 20. We know,      Mean = Σx/n or, 20 = (15 + 18 + 22 + 2x + 2x - 3 + 3x - 5 + 23)/7 or, 140 = 70 + 7x or, 140 - 70 = .....

28. मानव अधिकार (निबन्ध)

मानव अधिकार
मानव अधिकार मानव जातिसँग सम्बन्धित .....

29. What is seri culture.

Sericulture, the production of raw silk by means of raising caterpillars (larvae), particularly those of the domesticated silkworm (Bombyx mori). The production of silk generally involves two processes: 1. Care of the silkworm from the egg .....

30. In the given figure, M is the mid-point of AB and AD ⊥ BD. If BC = 6cm and AD = 8cm, find the area of ∆AMC.

Here,  Area of △ ABC =  1/ 2 Base x Height                           = 1/ 2 x 6cm x 8cm       .....

31. A lens can be taken as a group of prism. Prove the statement

A convex (+) or concave (-) lens can be thought of as two end-on prisms. Unless light is passing through the optical centre of a lens where the surfaces are parallel to each other (thus yielding no prismatic effect at the centre), light passing .....

32. The area of square pond is 400 m and the area of path is 176 m2. find the width which is uniform.

Here, Area of pond =400m2 or, l2 = 400m2, where l  is length of pond. or, l = 20m. Area of path = 176m2 Since the pond is square.   So Shape with path also square. Now, Total area with path = 400 + 176 =576m2 Or, L2 = .....

33. In a survey of 80 people, it was found that 60 liked oranges only and 10 liked both oranges and apples. The number of people who liked oranges is five times the number of people who liked apples. By using a Venn-diagram, find the number of people who liked apples only and who didn't like any of these fruits.

Here, n(U) = 80 no(O) = 60 n(O∩A) = 10 n(O) = 5n(A). n(OUA)' = ? From the Venn-diagram n(O) = 60 + 10 = 70 So, n(A) = n(O)/5 = 70/5 = 14. So, n(AUB)' = 80 - (60 + 10 + 4) = .....

34. What are the bases taken into consideration while dividing Nepal into provinces?

Nepal was divided into 7 provinces on 20th. September 2015 with the promulgation of the present constitution. Some of the things that were taken into consideration while declaring provinces are: - On the basis of natural resources - On the basis of .....

35. What are the differences between a private enterprise and that of a cooperative?

The main difference between the cooperatives and the private enterprise are:

Private .....

36. कवितामा के कस्ता यात्रा गरेर देशको नवनिर्माण गर्नुपर्छ भनिएको छ, स्पष्ट पार्नुहोस् ।

दिइएको उत्तरलाई आधार बनाई आफ्नै मौलिक उत्तर लेख्नुहोस् है त .....

37. Elaborate on the importance of water resources in Nepal.

Nepal is second to Brazil in terms of water resources. Water is one of the fundamental need for life, life without water is beyond imagination. Nepal is an agro-based economy where more than two-thirds of the citizen are dependent upon farm for .....

38. Prove the following identities.
 tan²A-sin²A = tan²A . Sin²A

Here, LHS = tan2A - sin2A = sin2A / cos2A - sin2A            [ Since, tanA = sinA/cosA.] = (sin2A - sin2A.cos2A)/cos2A   = sin2A(1 - cos2A)/cos2A = .....

39. Factorize
a2 + 2a - 8 - b2 - 6b.

Here, a2 + 2a - 8 - b2 - 6b We use complete square method to factorize this. = a .....

40. Effective implementation of federalism is very challenging in Nepal from a social perspective. Give your opinion in a sentence.

Nepal is multi-ethnic, multi-cultural, multi-lingual and multi-religious country. Managing this kind of diversity is a great challenge while implementation. Nepal is small but the country has been divided into 7 provinces. Decentralization of .....

41. २. कोष्ठकबाट मिल्ने शब्द छानी तलका खाली ठाउँमा भर्नुहोस् :
क) ‘आकर्षण’ को विपरीतार्थी शब्द .......... हो । (विमर्श, विकर्षण, अधीर)
ख) ‘नवीन’ को पर्यायवाची .......... हो । (प्राचीन, अर्वाचीन, नूतन)
ग) ‘रहर’ .......... शब्द हो । (पर्यायवाची, अनेकार्थी, लघुतावाची)
घ) .......... श्रुतिसमभिन्नार्थी शब्द हुन् । (फेरी–फेरि, यता–उता, फल–फूल)

२. (क) विकर्षण (ख) नूतन (ग) अनेकार्थी (घ) फेरि र .....

42. Factorize
m4 + 4n4 .

Here, m4 + 4n4 . = ( m2)2 + (2n2)2 Which is in the form of (a2 + b .....

43. Draw the picture of yeast.

.....

44. व्यखा गर्नुहोस

 निबन्धकार सुधा त्रिपाठीद्धारा लिखित ‘म को हुँ’ निजात्मक अनुभूतिहरूलाई .....

45. GIVE REASONS: THE SUN RISES EARLIER IN JHAPA THAN KAILALI.

Latitude and longitude coordinates of Jhapa are: 26.647038 N, 87.890495 E. Latitude and longitude coordinates of kailali are: 28.831354 N, 80.898651 E. Generally, there with 1o change in longitude, the time changes by 4 .....

46. A employee draws rs 12750 as monthly salary in a wholesale stationery shop. A certain commission is given as per the monthly sales. If the sales of a month is rs 1000000 and the total income of the employee of the month including commission is rs 25250 find the rate of commission.

Here,  Commission of the employee = Salary including commission - monthly salary                                 .....

47. Factorise
125a3 - 225a2 + 135a - 27.

Here, 125a3 - 225a2 + 135a - 27 = (5a)3 - 3.(5a)2.3 + 3.5a.32 - 33    Since, a3 .....

48. factorise
x2/4 + 2x - 5.

Here, x2/4 + 2x - 5 Taking LCM we get, = (x2 + 8x - 20)/4 = (x2 + 10x - 2x - 20)/4 = {x(x + 10) - 2(x + 10)}/4 = (x + 10)(x - 2)/4 Which is required .....

49. Find the prime numbers between 1 to 50?

The numbers which are divisible by 1 and itself are prime numbers. Here, prime numbers between 1 to 50 are colored .....

50. What is decimal?

Decimal is a way of writing numbers where each digit represents the different power of 10 . It also needs a decimal point (dot) to separate the integral and fractional parts of a .....