Students and Teachers Forum

1.
A ladder 9 m long reaches to a point below the top of the building. From the foot of the ladder, the angle of elevation of a building is 60o. Find the height of the building. here the ladder makes the angle 45o with the ground.

Here,  Let BC be the height of tower. From the right angled triangle BAD,  Cos45 = AB/AD or, 1/√2 = AB/9m or, AB = 9m/√2. Similarly from right-angled triangle ABC, Tan60 = BC/AB or, √3 = BC/(9m/√2) or, .....

2. वाक्य बनाऊ :

खाइन्

उषाले खाजा खाइन् .....

3. Define stony meteorites.

The meteorites which contain more silica and less iron and magnesium are called stony .....

4. Express the following percentage into decimal.

28%

Here, we have been given a percentage. We have been asked to express the percentage into decimal. At first let us write down given information: Given,  28% To convert percentage to decimal, we should put 100 in denominator and perform division .....

5. शब्द छुट्याऊ :

म आज गुरुलाई गृहकार्य देखाउँछु ।  (वर्तमान काल क्रिया शब्द छान ।)

.....

6. What is chord?

The line segment that joins any two points of the circumference of a circle is called .....

7. Convert the following decimal into fraction.

6.0005

.....

8. वाक्य बनाऊ :

गई

बहिनी हिजो मामा घर गई .....

9. Underline the imperative sentences from the following passage:

How to prepare pickles of fresh mushroom
First, collect all the required materials such as utensils, spoon, spoon, stirrer, gas and a glass bottle with lid. Then, wash the mushroom to remove foreign materials thoroughly. After that, cut the mushrooms into small pieces. Then, light the gas and heat the pieces of mushroom in a clean steel utensil with continuous stirring for 2 to 3 minutes. Remove it from the heat and sieve the mushroom thoroughly. Then, fry it in the required quantity of oil till it is brown. Mix the fried mushroom spices with required quantity of vinegar when it becomes cool. Now, the mushroom pickle is ready; check it out; tasty!

First, collect all the required materials such as utensils, spoon, spoon, stirrer, gas and a glass bottle with lid. Then, wash the mushroom to remove foreign materials thoroughly. After that, cut the mushrooms into small pieces. Then, light the gas .....

10. What is translation?

If each point of a plane figure on a surface is moved along the same direction and same distance then the transformations is called .....

11. 0.9m3 of iron is hammered into plates whose area is 60 cm2 and thickness 0.75 cm each. If each plate be sold for Rs. 40, find the total price.

Solution: Given, Volume of the iron (Vi) = 0.9 m3 Area of each plate (Ap) = 60 cm2                                        = 60/10000 .....

12. Convert the following decimal into fraction:

0.1

0.1 = .....

13. A man who is 2m tall stands at a distance of 4m from the lamp post and it is observed that his shadow is 4m long. Find the height of the lamp post.

Let EC be the man and AB be the tower. We know, ∡EDC = ∡AEF (A)  [Corresponding angles are equal] Now, In triangle ECD, tan ∡EDC = EC/CD = 2/4 = 1/2 Hence, tan ∡AEF = tan ∡EDC = 1/2 But,  tan ∡EDC = AF/EF or, 1/2 = .....

14. Why are there different types of forests in the three physical regions of Nepal?
 

Nepal is a country having geographical diversities. The differences in landform along with altitude and slope of the land are few of the things that have resulted in the different types of forests. The .....

15. Name the largest bird of prey in the world.

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16.
A vertical flagstaff ab is divided by point c in the ratio 3:2from it's top. If parts ac and bc subtend equal angle at a point on the ground of 20m from the foot of the flagstaff. Find the height of flagstaff.

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17. One pole is double than the other which is at a distance of 200m. The angle of elevation of their tops from midway between their bases is found to be complementary. Find the height of the taller pole.

Let AB and DE are the two poles with height x and 2x. C be the point of the observation, which is mid-point of AD. Let , ∡ACB = θ, then ∡DEC = 90o - θ. In right-angled triangle ABC,  Tanθ = x/100 .....

18. Write clearly any four administrative functions of the UN Secretary General.

Any four administrative functions of the UN Secretary General are: a.  He keeps records of all UN activities and prepares agenda to be discussed in General Assembly. b.  He coordinates, implements and supervises the programs, policies and .....

19. Find the square root of 196.

196 = 2 × 2 × 7 × 7         = 22 × 72  ∴ √ 196 = √ (22 × 72)                = 2 × 7          .....

20. The angle of depression of the top and bottom of a pole from the top of a house 36m high is found to be 30° and 60° respectively. Find the height of the pole.

Here, AB be the height of the pole. In right-angled triangle BCE,  tan60o = CE/BC or, BC = 36/√3 = 12√3m In right-angled triangle ADE, tan30o = ED / AD or, ED = 1/√3 x 12√3m = 12m. Thus, the height of .....

21. A screen is kept at the one corner of a rectangular cricket ground of 60m×20√3m at a certain height where the angle of elevation of it from the opposite corner is 30°, find the height of the screen from the ground.

Here, AB be the height of screen which is  kept at the one corner of a rectangular cricket ground of 60m×20√3m. In right-angled triangle ACD, AD = √{CD2 + .....

22. Name any five:
 
Means of transportation
  
          
          
           
       

Means of .....

23. Write any three:
 
Birds that can fly    Birds that cannot fly
   
   
   

Birds that can fly    Birds that cannot .....

24. Define unitary method.

The unitary method is a technique which is used for solving a problem by finding the value of a single unit and then finding the necessary value by multiplying the single unit .....

25. The population of our country is two crore thirty six lakh fifty seven thousand eight hundred ninety one. Express it in figure and re-write the number name in International number system.

Given population of our country, Two crore thirty six lakh fifty seven thousand eight hundred ninety one. = 2, 36, 57, 891 Writing this number in International number system, 23, 657, 891 = Twenty three million six hundred fifty seven thousand .....

26. Find the prime factors of the following number?

128

The prime factor of 128  = 2 × 64                                         = 2 × 2 × 32           .....

27. Write any five:
 
Insects
 
 
 
 
 

.....

28. Complete the Conditional Sentence (Type III) by putting the verb into the correct form. 

1. If you had added a little lemon, the soup would have tasted excellent. (add)
2. They would have paid less if they had booked the tickets yesterday. (book)
3. If the students had collected more empty bottles, they would have had more money for their class trip. (collect)
4. Gyanu might have convinced his grandmother to see the doctor if he had talked to her. (talk)
5. She would have visited them in hospital if she had known that they were there. (know)
 

1. If you had added a little lemon, the soup would have tasted excellent.  2. They would have paid less if they had booked the tickets yesterday. 3. If the students had collected more empty bottles, they would have had more money for their .....

29. Explain the economic activities of mediterranean climatic region.

The economic activities of the people living in Mediterranean climatic region range from industries to agriculture and tourism to marine and mining. The countries that fall under Mediterranean climatic region are .....

30. Complete the Conditional Sentence (Type II) by putting the verb into the correct form. 

1. Maya could understand the text if her teacher marked the important sentences. (mark)
2. Jay would get better marks if he improved his grammar. (improve)
3. If we recycled these cans, we could reduce rubbish. (recycle)
4. If you changed your money at a bank, you would save commission. (change)
5. If it snowed during the night, I might go snowboarding the next morning. (snow)
 

1. Maya could understand the text if her teacher marked the important sentences.  2. Jay would get better marks if he improved his grammar.  3. If we recycled these cans, we could reduce rubbish.  4. If you changed your money at a .....

31. 324 students are arranged in a hall such that there are equal number of students in each row and column. Find the number of students in each row.

The number of students in each row and column are equal. So, the number of students in each row is the square root of 324. Here,  324 = 2 × 2 × 3 × 3 × 3 × 3              .....

32. Complete the Conditional Sentence (Type II) by putting the verb into the correct form. 

1. He would invite all his friends if he had a house by the beach. (invite) 
2. She would pick her friends up if they wanted to spend their holidays. (pick)
3. They would have great parties if their friends came to this place. (have) 
4. If they liked to go shopping in a big city, they would go to shopping mall. (go) 
5. If our friends' holidays were over, she would feel very lonely. (feel)
 

1. He would invite all his friends if he had a house by the beach.  2. She would pick her friends up if they wanted to spend their holidays.  3. They would have great parties if their friends came to this place.  4. If they liked to .....

33. Complete the Conditional Sentence (Type II) by putting the verb into the correct form. 

1. If they had a yacht, they would sail the seven seas.(sail) 
2. If Kishor had more time, he would learn karate. (learn)
3. If we told their father, he would be very angry. (be)
4. Kavita would spend a year in the USA if it were easier to get a green card. (spend)
5. If I lived on a lonely island, I would run around all day. (run)
 

1. If they had a yacht, they would sail the seven seas. 2. If Kishor had more time, he would learn karate.  3. If we told their father, he would be very angry.  4. Kavita would spend a year in the USA if it were easier to get a green .....

34. नमिल्ने शब्द छान :

अध्यापन, खाँदिलो, अधिकार । (प्रत्यय लागेको शब्द)

.....

35. Complete the Conditional Sentence (Type I) by putting the verb into the correct form.

1. If I listen to classical music, I can write good poems. (listen) 
2. Lisa must look after her baby brother if her father goes jogging. (go)
3. If you take the train, you should arrive in here before 8 pm. (take)
4. The girls should hurry if they haven't booked the tickets yet. (not/book)
5. If Philip does that, Sophia will scream. (do)
 

1. If I listen to classical music, I can write good poems. (listen)  2. Lisa must look after her baby brother if her father goes jogging. (go) 3. If you take the train, you should arrive in here before 8 pm. (take) 4. The girls should hurry if .....

36. Complete the Conditional Sentence (Type I) by putting the verb into the correct form.

1. His teacher will phone his parents if he texts in the lesson. (phone)
2. If she answers this question correctly, she will get an extra point. (get)
3. My sister will be angry if I turn on the music too loud. (be)
4. Your room will look much tidier if you keep your hamster in the cage. (look)
5. If we surf the Internet, we will find a lot of information about Loch Ness. (find)
 

1. His teacher will phone his parents if he texts in the lesson. (phone) 2. If she answers this question correctly, she will get an extra point. (get) 3. My sister will be angry if I turn on the music too loud. (be) 4. Your room will look much .....

37. Complete the Conditional Sentence (Type I) by putting the verb into the correct form.

1. If you repair my bike, I will help you with the Maths homework. (help)
2. It will be too hot if he travels to Greece in August. (be)
3. If Peter sits on the sofa, his sister will sit next to him. (sit)
4. The policeman will tell you the way if you ask him. (tell) 
5. If it snows in the Alps, it will rain in Munich. (rain)
 

1. If you repair my bike, I will help you with the Maths homework. (help) 2. It will be too hot if he travels to Greece in August. (be) 3. If Peter sits on the sofa, his sister will sit next to him. (sit) 4. The policeman will tell you the way if .....

38. How many members are there in your family? 

There are five members in my .....

39. The angles of a triangle are x + 100, x + 200 and x + 300. Find the value of x, also find the measurement of each angles.

Given, Angles of a triangle are;  x + 100,   x + 200   and   x + 300. x =? Then, x + 100 + x + 200 + x + 300 = 1800 (∵ The sum of interior angles of a triangle) or, 3x + 600 = 1800 or, 3x = 1800 – 600 or, 3x = 1200 or, x .....

40. Identify the type of sentence:

Declarative, Imperative, Interrogative, Exclamatory

1. We will not tolerate this. 
2. I am your friend. 
3. My sister lives in Mexico. 
4. What did you do then? 
5. Do be a bit more careful.

1. We will not tolerate this. Declarative 2. I am your friend. Declarative 3. My sister lives in Mexico. Declarative 4. What did you do then? Interrogative 5. Do be a bit more .....

41. The angle of depression of the top and bottom of a lamp post from the top of a house 60m high are found to be complementary where the distance between them is 20√3m. Find the height of the lamp post. Also, find the angles so formed.

Here, Let AB be the height of lamppost and CE be the house. In right-angle triangle BCE, Tan(90 - θ) = CE / BC or, Cotθ = 60/20√3 or, Tanθ = 1/√3...................(i) Again, in right-angled triangle .....

42. दिइएको अनुच्छेद राम्रोसँग पढी उक्त अनुच्छेदले दिन खोजेको मुख्य सन्देशलाई दुई वटा बुँदामा समेट्नुहोस् :(दृष्टांशबाट लेख्ने)

युद्ध, कोलाहल, हडताल, झैझगडा, दुर्भावना र अशान्ति आदि नभएको क्षेत्रलाई शान्ति क्षेत्र भनिन्छ । विद्या आर्जन गर्ने ठाउँलाई विद्यालय भनिन्छ । विद्यालयमा बालबालिका स्वच्छ, सफा एवम् कञ्चन मस्तिष्क लिएर जीवनपयोगी ज्ञान हाँसिल गर्न आएका हुन्छन् । विद्यालयमा अध्ययन गर्ने बालबालिकाको सुकोमल मन मस्तिष्कमाथि अशान्तिको प्रदुषण थोपर्नु कदापि राम्रो होइन । हाम्रो मुलुकमा सबैभन्दा घाइते र सबैभन्दा पीडाग्रस्त भएको क्षेत्र नै विद्यालय हो । विद्यालयलाई अशान्ति, अराजकता र अस्थिरताको तारो बनाउँदा देशको उन्नति कहिल्यै हुँदैन ।

१) युद्ध, कोलाहल, अशान्ति, दुर्भावना र हडताल आदि मुक्त क्षेत्रलाई शान्ति क्षेत्र भनिन्छ । २) .....

43. Find the third proportional to:
6, 4, 8

Here, we have been given the series of number. We have been asked to find the value of third proportional. At first let us write down given information: Given,  6, 4, 8 Let third proportional be x.  So, series will be 6, 4, x, .....

44. Which of the following are in proportion?

4, 8, 6, 12

Here, we have been given the series of numbers. We have been asked to find that whether they are in proportion or not. At first let us write down given information: Given,  4, 8, 6, 12 To be proportion, the ratio of first two numbers should be .....

45. Fill in the blank with correct plural verb:

1. Good deals of efforts ______needed.
2. Lots of crops ______destroyed by the flood.
3. Most of the students ______out of discipline.
4. His scissors ______lost.
5. The British ______a long history.
 

1. Good deals of efforts are needed. 2. Lots of crops were destroyed by the flood. 3. Most of the students are out of discipline. 4. His scissors are lost. 5. The British have a long .....

46. Fill in the blanks:

1. I ______writing a letter.
2. We _______visited the village.
3. The volunteer _______all the questions carefully.
4. The celebrities _______very different lives in private
5. The Prime Minister ______the speech in public.

1. I am writing a letter. 2. We have visited the village. 3. The volunteer answers all the questions carefully. 4. The celebrities have very different lives in private 5. The Prime Minister gives the speech in .....

47. Fill in the blanks:

1. All of the land _____ barren.
2. The cattle _____grazing in the field.
3. A flock of sheep _____grazing in the field.
4. They _____home.
5. It _____away.

1. All of the land was barren. 2. The cattle were grazing in the field. 3. A flock of sheep were grazing in the field. 4. They go home. 5. It runs .....

48. Who makes spades?
 

.....

49. The ratio of male and female teacher in a school is 5:3. If the number of female teacher is 12, find the number of male teachers. 

Here, we have been given the ratio of male and female teacher. We have been asked to find the number of male teacher. At first let us write down given information: We have,  Ratio = 5:3 Female teacher = 12 Male teacher =? Now, let us find the .....

50. List out any three tools used by a doctor.
 

Any three tools used by a doctor .....