Students and Teacher's Forum

Students and Teachers Forum

5. What is society?

A society is a group of people living together with common goals. In other words, a society is a group of people living in an organized way. You know the fact that humans are social animals. Human cannot survive in isolation or alone. They need .....

6. Find the median of the given data.

Marks	0 - 10	10 - 20	20 - 30	30 - 40	40 - 50
Frequency	4	3	2	8	3

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7. प्रश्न नं. ३.(क) र (ख) लाई व्याख्या गर्नुहोस्ः

३.(ख)

कविले तपस्या गरेर ज्ञान प्राप्त गरिरहेका सबै तपस्वी वा विचारकलाई कलम समाउन .....

8. What is a game?

When I was child, I used to play Mario .....

9. Find HCF and LCM :
x²- 4x - 12 and x²- 8x + 16

Given by the question, x2 -4x + 12 ....(i) x2 -8x + 16.....(ii) Solving (i) x2 -4x - 12 or, x2 -(6-2)x - 12 = x2 - 6x + 2x - 12 = x(x-6) + 2 (x-6) (x+2) (x -6) Again, x2 - 8x + 16 = x2 - 2.x.4 + .....

10. Simplify:

x²-4x+12and x²-8x+16

Given by the question, x2 -4x - 12 ....(i) x2 -8x + 16.....(ii) Solving (i) x2 -4x - 12 or, x2 -(6-2)x - 12 = x2 - 6x + 2x - 12 = x(x-6) + 2 (x-6) (x+2) (x -6) Again, x2 - 8x + 16 = x2 - 2.x.4 + .....

11. Factorise:
4x² - 9y² + 4x + 1

Given by the question, 4x2 - 9y2 + 4x +1 = 4x2 + 4x + 1 - 9y2 = (2x + 1)2 - 9y2 [ a+b = a2 + 2ab + b2] = (2x + 1 - 9y2) ( 2x + 1 + 9y) .....

12. Verify experimentally that the "side opposite to the greater angle is longer than the side opposite to the smaller angle (Two figures of different measurement are necessary)

Step 1: Draw two different triangles ABC and DEF such that <B and <D are greater. step 2: Measure the sides AB, BC, AC of triangle ABC. step 3: Tabulate the reading in tabular column. step 4: You will observe side AC .....

13. The total cost of plastering a floor, ceiling and four walls of a room at the rate of Rs. 30/m² is Rs. 2,820. If the length and breadth of a room are 5 m and 4 m respectively, find the height of the room.

Here, Total surface area of the room = Total cost / Rate of plastering = Rs. 2820 / Rs. 30 = 94 m2 or, 2(lb + bh +lh) = 94 or, 5×4 + 4h + 5h = 94/2 or, 9h = 47 - 20 or, 9h = 27 h = 27 / 9 = 3 .....

14. The monthly salary of a sales man is Rs. 9,000. He gets some percent commissiop on his total sales in every month. If his total income in Falgun is Rs. 11500 and his total sales is Rs 1,00,000, find the rate of commission.

Here, Commission amount = Income in Falgun - Monthly salary = Rs. 11500 - Rs. 9000 = Rs. 2500 Also, Rate of .....

15. Rewrite these sets in listing method.
a. A = {letters of the word 'COLLECTION '}
b. P = {x:x is a natural number,x<9}
c. Q = {y:y is an even number,y < 10}

a. A= {letters of the word 'COLLECTION '} A = {C, O, L ,E ,T , I , N } b.P = {x:x is a natural number,x<9} P = { 1, 2, 3, 4, 5, 6, 7, 8} c. Q ={y:y is an even number,y < 10} Q = {2, 4, 6, .....

16. Factorise: (x + y)² - (x + y)

(x + y)2 - (x + y) = (x + y) (x + y) - (x + y) = (x + y) { (x + y) - 1} = (x + y) (x + y .....

17. If the volume of a water tank is 2.75 m³. Find the quantity of water in liter contained by the water tank.

Given, volume of a water tank (V) = 2.75 m3 We know that, 1m3 = 1000 liters 2.75 m3 = .....

18. Define regular body.

The soil is the top layer of the earth's surface. Plants grow in the soil. The soil consists of rock and mineral particles mixed with decayed organic matter. It has .....

19. If the order pairs (p, 1) and (5, q) belongs to {(x, y) : y = 4(x + 5/4)} find the value of p and q.

For (5, q) y = 4(x + 5/4) or, q = 4(5 + 5/4) ∴ q = 25 Hence, p = -1 and q = .....

20. Factorise:
2y-y2+ 1+x4

Given, 2y - y2 + 1 + x4 = x4 - (y2 + 2y + 1) = x4 - (y+1)2 .....

21. Solve: 1p+q+x= 1p+ 1q+1x

1/(p + q + x) = 1/p + 1/q + 1/x or, 1/(p + q + x) = (qx + px + pq)/(pqx) or, (p + q + x) (qx + px + pq) = pqx or, pqx + p2x + p2q + q2x + pqx + pq2 + qx2 + px2 + pqx = pqx or, p2x + p2q + q2x + 2pqx + pq2 + .....

22. Derive: S= ut + 1/2at²

Let s, u, v, a and t represent distance traveled, initial velocity, final velocity, acceleration ad time respectively. From defination of average speed, we can say that, s/t = (u + v)/2 or, s = (u + v)⨉t/2 ............(i) But, v = u + at .....

23. Name the parts of plant.

Above the soil, you can see a shoot. It contains a stem and some branches. Branches contain some buds and flowers. You can also see the leaves in the branches. You can see some pods also. The pods are the fruits of .....

24. What is work?

According to Physics, a force is said to do work if, when acting, there is a displacement of the point of application in the direction of the force. There are lots of examples of work that we carry out in our day to day activities. When a ball .....

25. Who is the best footballer in the whole world Messi or Ronaldo

It is part of your choice. Whose game do you like the most? So, if you like Messi's playing styles, he can be the best footballer. If you prefer Ronaldo's playing, he could be the best footballer for .....

26. What the decimal of 66/5?

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27. ‘नेपाल’ कवितामा कविले नेपालको प्राकृतिक सुन्दरताको वर्णन कसरी गरेको छन् । स्पष्ट पार।

नेपाल वीरताको इतिहास बोकेको देश हो । यहाँ भक्ति थापा, अमरसिंह थापा, बलभद्र कुँवर .....

28. What is a solar system?

The Sun together with the nine planets, their moons, and all other bodies that orbit it, including asteroids, comets, meteoroids, and Kuiper belt objects is called as Solar system. In addition to planets, the Solar System also consists .....

29. Which Newton's law of motion defines force? State this law.

Newton's first law of motion define force. Newton's first law of motion states that everybody continues in its state of rest or uniform motion unless an external force is applied on it. Examples of Newton’s 1st Law: i) If you .....

30. म को हुँ र किन यहाँ आएको हुँ ?

यो प्रश्न आफूले आफैँलाई र अरुलाई पनि सोध्न सकिन्छ । जसरी साहित्यकारले म को हुँ भनेर हामीलाई .....

31. If ram had sell the watch on Rs 1000 at 10 percent profit and 15 percent loss, find cost price.

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32. Write down any two characteristics of metal so that it is used to make electric wire?

1. Metal has maximum electrical conductivity. 2. It has high tensile strength so that it can withstand mechanical stresses. 3. Metal bear mechanical loads or electricity and telecommunications signals. 4. .....

33. What is the frequency of ultra sound wave?

Ultrasonic waves range above 20 kHz(20000 Hz), which is way above the audible range of human ears.

They are used in multiple applications, although the technology is still in infant stages, like welding, soldering, SONAR(exists as a major .....

34. Simplify:
9+2×2

= 9 + 2 × 2 (multiplication is done first, afterward addition is done) = 9 + 4 = .....

35. Subtract:
2-2

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36. बेनी शीर्षकमा निबन्ध लेख

बेनी बेनी म्याग्दी जिल्लाको एउटा .....

37. 12pen cost is Rs 600.How many pen can be bought on Rs 200?

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38. Write down any three works to heighten peace and friendship.

Peace and friendship go hand in hand. Both are needed for the social and economic development of the nation and the society. They promote brotherhood, unity and many positive positive aspects in the society. Peace and friendship in the community .....

39. How many square meters are there in one acre and in one hectare?

An acre is about 0.405 hectare and one hectare contains about 2.47 acres. 1 acre = 43560 sq feet 1 hectare = 107639 sq .....

40. What is centripetal and centrifugal forces?

Centripetal force is the force that is necessary to keep an object moving in a curved path and that is directed inward toward the center of rotation. For eg: A string tied on a stone when rotated exerts centripetal force on .....

41. If you are asked to prepare neutral salt, how would you prepare it ? Explain with an example.

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42. If you are asked to prepare basic salt, how would you prepare it ? Explain with an example.

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43. If you are asked to prepare acidic salt, how would you prepare? Explain with an example.

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44. How are salts useful? Explain with 3 examples.

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45. Write the reason why Mg(HCO₃) is called an acidic salt.

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46. Write the reason why sodium chloride (NaCl) is called a neutral salt.

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