Students and Teacher's Forum

Students and Teachers Forum

1. Mud and bricks are used for the construction of houses. Why?

Houses made of mud and bricks are naturally insulated, during the summer months, the mud and brick home stays cool during the hottest part of the day. And during the winter, brick walls store home's heat and radiate it back. so they will be .....

2. A 60 kg weight of person climbs stairs of total height 20 m in 2 minutes. Calculate his power.

Now, Power (P) = workdone (W) timetaken (t) = 11760 .....

3. Write a couple of paragraphs on "My school life" in about 100 words. Use the clues:

Name of school - causes of excitement - school discipline - knowledge I get from teachers - golden life

School life is the best period of human life. It plays a great role in instilling good morals. It helps to socialize a biological creature into a social being. My schooling started at a school named Shining Star .....

4. In a group of 200 students, 138 like mathematics, 115 like English, and 91 like both
(a) Represent the above information in Venn-diagram
(b) How many students do not like both the subjects? (Ans: 38)

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5. If a + b + c = 0, prove that: xb-1c-1xc-1a-1xa-1b-1

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6. If a2+ b2+ c2=ab+bc+ca, prove that; xaxba-bxbxcb-cxcxac – a=1

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7. If abc+1=0, then prove that: bb-ab-1+ cc-bc-1+ aa-ca-1=1

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8. Organic fertilizer should not be stored for long periods of time. Why?

The longer it is stored the better chance it has of losing nutrients. However, there may be other ingredients that expire, especially CRF (Controlled Release Fertilisers). Any compost with a CRF, which is more than a year old, would dry .....

9. If f(x) = x² + 5x + 7, x ∈ R and g(x) = 5x - 3, x ∈ R, find f∘g(x) and g∘f(x).

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10. If f(x) = 2x - 1 and g(x) = x + 1, find g∘f(x) and g∘f(-2).

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11. (क) तलको अनुच्छेदबाट उपसर्ग लागेर बनेको दुई ओटा र प्रत्यय लागेर बनेका दुई ओटा शब्द पहिचान गरी लेख्नुहोस् ।
गत बर्षको परिक्षामा सहभागी भएकी समीक्षाले आफ्नो धैर्य र अनुशासन देखाएरै छाडिन् ।

उपसर्ग ः अनुशासन, सहभागी प्रत्ययः छाडिन्, .....

12. What is muscular energy?

You may have done certain works by using the energy or power of your muscles. For example, you may have lifted a heavy bucket of water, pushed or pulled a heavy object from one place to other. This energy or power of the muscles is called .....

13. Construct a readable story with your own words on the basis of given outlines.

Long long ago a daughter of cat happen to fall in love with a man - wanted to be a girl for the man - worship the goddess- goddess made her a beautiful girl - the girl and the man got married - sitting in a room - the goddess wanted to check the past habit of the girls- goddess sent a mouse in front of the girl - the girl wanted to eat the mouse - goddess changed her to a cat -moral

The cat and man

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14. What are the sources of heat energy?

The four sources of heat energy are the sun, firewood, candle, and .....

15. Convert 3068₁₀ into quinary system.

5|3068| 3 5| 613 |3 5| 122 |2 5| 24 |4 5|4 |4 |0 Hence, (3068)10 = .....

16. What is the extension of Word 2010 document?

: .docx - Word document : .docm - Word macro- enabled document ; same as docx, but may contain macros and scripts : .dotx - Word template : .dotm - Word macro-enabled template; same as dotx, but may contain macros and scripts : . docb - Word .....

17. If abc + 1 = 0 the prove that: 11 – a – b-1+ 11 – b – c-1+ 11 – c – a-1=1

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18. State whether the following statements are true or false.
a. The hot ball of iron remains hot if it is left free.
b. Liquid substances expand more than gas substances.
c. Most liquids and gases get heated by radiation rather than conduction.
d. Heat can travel without medium.
e. We receive heat from the sun by conduction.

a) False , because hot iron ball loose the temperature and gets cold after sometime. b) False, because gases expand more than liquid. c) False, they are heated by convection. d) True, We get heat from sun is an example. e) False, we .....

19. Solve:
6x² + 17x + 12 = 0

6x2 + 17x + 12 = 0 or, 6x2 + 9x + 8x + 12 = 0 or, 3x(2x + 3) + 4(2x + 3) = 0 or, (2x + 3)(3x + 4) = 0 ==> Either, 2x + 3 = 0 ==> 2x = - 3 .....

20. 3) Calculate discount amount. Then, find S.P.
a) M.P = Rs 240, discount percent = 5%

Solution: M.P. = Rs 240 Discount percent = 5 % Discount amount = ? S.P. = ? We know, Discount amount = Discount % of M.P. .....

21. 2) Find the discount in the following cases.
a) M.P = Rs 380, S.P = Rs 345

Solution: Given: M.P = Rs.380 S.P = Rs.345 Discount =? We know, .....

22. 1) Find S.P in the following cases
a) M.P = Rs 270, discount = Rs 25

Solution: M.P. = Rs 270 Discount = Rs 25 S.P. = ? We know, S.P = M.P. - discount = Rs 270 - Rs 25 = Rs 245. Therefore, S.P. is Rs .....

23. Why Prithvi Narayan Shah appointed the person favoured by the people as kaji? Explain.

Nepal before unification was divided into many small kingdoms. The small states were fighting amongst themselves. There were Malla Kingdoms in the Kathmandu valley. Kathmandu was known as 'the Nepal Valley'. Similarly, the Gandaki Region .....

24. Fill in the blanks. .
a. Transfer of heat in liquid takes place by......................•
b. In convection, water travels from the .............region to the ...............region.
c. A solid transfers heat by the process of. .......................•

b) In convection, water travels from the hot region to the cold region. You know that heat always flows from hot body to the cold body. Since the water at hot region is lighter and the water at the cold region is heavier, The lighter hot .....

25. Why do tigers, lion and leopard have sharp and strong teeth?

Tigers, lions and leopard are carnivorous animals. That means, they eat the meat of other animals. They have sharp and strong teeth for tearing and chewing the .....

26. पाठमा दिइएको कबिता राम्ररी पढि त्यस्तै शैलीमा 'म बिद्यार्थि शिर्षकमा एउटा कविता लेख ।

म विद्यार्थी हुँ म नेपालको आश पहिचान छ विद्यार्थी एक आम गर्ने छु यस्तो काम जसले बढ्नेछ मेरो .....

27. Arrange the following
Animals Name
1:Hear=
2:Sas=

1. Hare 2. .....

28. Arrange the following
Animals name

1.Hear=
2.Sas=

1. Hare 2. .....

29. Write the name with structural formula of the substance formed due to the displacement of two hydrogen atoms of ethane with two hydroxyl(OH,) radicals by chemical reactions.

Structural formula .....

30. क) ' रहर' शब्दको अर्थ ........... होइन ।(दाल,चाहना, उपेक्षा)

ख) 'युक्ति ' शब्दको पर्यायवाची शब्द ...........हो।(उपाय,चौपाय, असहाय )

क) उपेक्षा ख) .....

31. 1. Fill in the blanks
a) For the long lasting of cells we have to connect them in.... combination.
b) To get more electric current we have to connect them in ...... combination.
c) The electricity produced by flow of charge is........
d) The electricity produced by change in number of charge is............
e) Like charge............ and unlike charges........

1. a. For the long lasting of cells we have to connect them in parallel combination. b. To get more electric current we have to connect them in series combination. c. The electricity produced by flow of charge .....

32. The minimum charge of electricity up to 20 units is Rs. 80, Rs. 7.30 per unit from 21 units to 50 units, Rs. 8.60 per unit from 51 - 150 units and Rs. 9.50 per unit from 151 - 250 units. The meter reading of a household was 1568 units on 1^st Aswin and 1752 units on 1^st Kartik. Calculate the cost of payment of the bill separately under the following schedule.
(i) Payment was made within 7 days of meter reading.
(ii) Payment was made on 15^th day of meter reading.
(iii) Payment was made on 27^th day of meter reading.
(iv) Payment was made on 35^th day of meter reading.
(v) Payment was made on 50 ^th day of meter reading.

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33. Prove that: ∆ABC ∼ ∆AXY

Statement Reason In ∆ABC and ∆AXY a. <BAC = <XAY a. Common angle b. <ABC = <AXY b. Corresponding angles c. .....

34. How did the industrial revolution help in the development of agriculture and trade?

The Industrial Revolution was, fundamentally a technological revolution. The Industrial Revolution was a big change in the way people worked and goods produced. It began around 1775 in Britain and spread to Belgium, Germany, northern Italy, and .....

35. What are the different states of matter? Explain.

Liquids: Any substance with has no definite shape are known as liquids. The molecules inside the substances are slightly farther than each other. It takes the shape of container. For example, water, kerosene, .....

36. What were the impacts of industrial revolution on human life? Write them in brief.

On the other hand, the industrial revolution led to imperialism because it gave the motive and the ability to imperialize Asia and Africa. Industrialization gave the European countries better weapons. It gave them large numbers of guns and cannons .....

37. Why were the Joint Stock Companies established for the industries? Why such work increased the aversion between the owners and labourers?

In a joint stock company, stock was sold to high net-worth investors who provided capital and had limited risk. The democratic culture of joint stock company could help for the betterment of industries and the labours there. These companies .....

38. Convert the following.70gm (mg)

Solution: =70 gm We know, 1 gm = 1000 mg Now, = 70 gm = (70 × 1000) mg = 70000 mg. This is your .....

39. The industrial revolution played an important role in the development of imperialism and colonialism. Do you agree?

The Industrial Revolution began in Europe in about 1750 AD. Before the industrial revolution, engines, machines and factories did not exist. Most people had to grow and hunt for food, make everything they owned. They used to travel on .....

40. Cold water of same source hardly forms lather with soap. Why?

Cold water of same source hardly forms lather with soap. This is because the source may contain some minerals (bicarbonates of calcium or magnesium) at cold temperature. But when the water of same source is warmer, the minerals present in it may .....

41. Rewrite the following sentences as indicated in the bracket.

Yangchen says ,"I don't like to study all the time. ( to indirect speech)

Yangchen says that he doesn't like to study all the time. Rule: If the reporting verb is in 'simple present tense' the reported part doesn't .....

42. Prove that: ∆AOB ∼ ∆COD

Statement Reason In ∆AOB and ∆COD (i) <ABO = <DCO (i) Alternative angles (ii) <BAO = <ODC (ii) Alternative angles (iii) <AOB = .....

43. तलका कुनै एक बिषयमा ८० शब्दसम्मको प्रबन्ध लेख ।
- बोट बिरूवाको मह्त्व
- फोहोर मैला नियन्त्रण
- जनसङ्ख्या वृद्धी

फोहोरमैला नियन्त्रण कुनै पनि ठाउँको स्वच्छ, सफा र स्वस्थ्य वातावरणले त्यस सहरको सुन्दरता .....

44. If 2x= 3y= 12z then prove that: 1z- 1y= 2x

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45. If f (a) = a/m, g (x) = 5x - 7 and g[ f (g (x) ) ] = 15x - 21 then find the value of m.

Here, We have given, f (x) = x/m, g (x) = 5x - 7 and g[ f (g (x) ) ] = 15x - 21 We need to find the value of m. For this, g[ f (g (x) ) ] = 15x - 21 or, g[ f ( 5x - 7 ) ] = 15x - 21 or, g[ ( 5x - 7)/m] = 15x - 21 or, .....

46. The sum of the present age of two children is 13 years and the product of their age is 36. Find their age.

Let, x and y be age of two children. according to question, x + y = 13 or, x = 13 - y ........... (i) And xy = 36 ........ (ii) solving (i) and (ii) (13 - y)y = 36 or, 13y - y2 = 36 or, y2 - 13y + 36 = 0 or, y2 - .....

47. If x = ab13 + ab-13, prove that: x3+ 3x=ab- 1ab

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48. How is Security Council of UNO formed?

Security Council is one of the main organs of United Nations. It has the prime responsibility for maintaining international peace and security. There are 15 members in the security council. Among them, 5 are permanent and 10 are non-permanent .....

49. What was Marshal Plan?

The Marshall Plan was a U.S. sponsored program. It was implemented following World War II. It was sponsored to aid European countries that were destroyed as a result of the war. It was laid out by U.S. Secretary of State George Marshall. George .....

50. Simplify: 11 + ax – y + az – y+ 11 + ay – z + ax –z+ 11 + az – x + ay – z

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