A biodegradable material or substance can be defined as a material which can be decomposed easily by bacteria or any other natural organisms and not being the part of pollution.

Biodegradable wastes are the waste materials which are and can be easily degraded by natural factors like microbes (e.g. bacteria, fungi and few other), abiotic components like temperature, UV, oxygen, etc. few examples of such wastes are kitchen wastes, food materials, and other natural wastes

Neha Singh,

Computer-In-Charge

Army Public School

Delhi.

27th Sep 2019

To,  

The Person In Charge,

Sales Department

Apple Inc.,Nehru Place,

New Delhi,

Sub: Placing an order for computers and its accessories.

Dear Sir/madam,

Our school needs computers and its accessories. We have selected your company for the order of 20 computers and its accessories. Terms and conditions regarding the order are enclosed with this letter.

List of items as below

Name of the device                   number of pieces

1. Computers                                             20  

2. Mouse pad                                            20

3. Printer                                                       1

4. Projector                                                   1  

The amount towards the goods will be paid after the delivery of items.We hope that the dispatch of the goods will be done as early as possible.

Looking forward to continue the business relations with your company in future.

Yours sincerely,

Neha Singh

An ox of a man means a very strong man. Lencho was a hard working farmer. He worked hard in the field. His faith in God, made him to write letter to God. This shows how strong & hard working Lencho was, as he was worried about his harvest, which was destroyed by hailstorm. He thought that, writing a letter to God may help him to buy seeds for his next crop, as he didn't have any more seeds for his next crop. So the author compared him to an ox. This is a literary device used called metaphor.

 The entire class is quaking in boots because the teachers will decide who will move up in the next class and who will not. The half class is making bets on the results the teachers will announce soon.

A N S W E R 
C o n v e x  mirror always forms a virtual, erect and diminished image of the object placed at any position in front of the mirror.

More employment in rural areas can be created by taking following steps:

1. Farmers should diversify agriculture and adopt horticulture, animal rearing, organic farming, pisciculture besides farming.

2. Government should take necessary steps to provide loans to farmers at cheaper rates and from formal sources of credit.

3. Creation of basic infrastructure facilities such as roads, transportation, market and banking will lead to creation of employment opportunities in rural areas.

4. Establishment and promotion of cottage and small scale industries will also increase employment opportunities in rural areas.

Biodiversity is “the variability among living organisms from all sources including terrestrial, marine and other aquatic ecosystems, and the ecological complexes of which they are part; this includes diversity within species, between species, and of ecosystems.” It is the foundation of life on Earth. Three successful approaches to protecting biodiversity are captive breeding,laws and treaties, and habitat preservation. the number of different species in an area. A species that influences the survival of many others in an ecosystem.

The agricultural sector is the largest employer in the Indian economy. It employs nearly 51% of the labour force in India. However, this sector accounts for only about 17% of India’s GDP. The relatively low contribution to GDP despite employing the largest portion of the workforce is due to the low productivity of the agricultural sector. The output of crops like rice and wheat per hectare of land is much less in India than in other countries like the USA, France or China. As a result, even the large workforce cannot produce a very high amount of farm output that can contribute more to GDP. The low productivity of Indian agriculture is, in turn, due to the following reasons. a. The average size of land holdings is very small in India. b. The absence of alternative employment alternatives like manufacturing industries in many parts of rural India causes the small farms to be over-manned disguised unemployment and low productivity of labour. c. The small farms hamper the adoption of modern technology in agriculture that can enhance productivity.

Nationalism in India - (1918 - 1930)

For locating and labelling / Identification

1. Indian National Congress Sessions: Calcutta (Sep. 1920) Nagpur (Dec. 1920) Madras (1927) Lahore (1929)
2. Important Centres of Indian National Movement (Non-cooperation and Civil Disobedience Movement)
(i) Champaran (Bihar) - Movement of Indigo Planters
(ii) Kheda (Gujrat) - Peasant Satyagraha
(iii) Ahmedabad (Gujarat) - Cotton Mill Workers Satyagraha
(iv) Amritsar (Punjab) - Jallianwala Bagh Incident
(v) Chauri Chaura (U.P.) - Calling off the Non-Cooperation Movement
(vi) Dandi (Gujarat) - Civil Disobedience Movement

We find that the child's image in the magic mirror has
1. Head bigger and hence the mirror must be a concave mirror. A concave mirror here is producing an enlarged and erect mirror.
2. The middle portion unaltered and hence the middle part of the mirror must be a plane mirror.
3. The bottom part of the mirror produces a smaller image of the legs. The image is smaller since it is produced by a convex mirror. The convex mirror produced the erect and diminished image.
 

A Concave mirror is also called a converging mirror, has a reflecting surface away from the incident light.

Plane mirror is a flat reflecting surface where angle of reflection is equal to angle of incidence.

Convex Mirror is also called the diverging mirror.

Now according to the question at the top it is concave mirror because the boy finds the image bigger it means converging image, on the middle part it is found the image is of same size so it is plane mirror and at the bottom the image becomes smaller that is the image diverges so it is convex mirror.

Gandhiji launched the Non-cooperation movement of 1921 because: 

• According to Gandhiji , the British rule was established in India with the cooperation of Indians, and had survived only because of this cooperation. So time has arrived to withdraw cooperation to the British. 
• First World War added to the misery of the Indian people. Heavy taxes, high prices, famines and epidemics made people's life miserable. 
• Rowlatt Act invited large scale protests throughout the country. 
• Jallianwala Bagh Massacre and the injustice done to Punjab made Indians angry which needed to be avenged.
• To restore the status of the ruler of Turkey. 
• To bring Swaraj or Self Rule to India. 
• Mahatma Gandhi declared that the main objectives of the non cooperation movement were : 
• To cripple the British administration and make them realize that they cannot function without the actual support of the Indians. 
• To avenge the wrong done by the Government in Punjab (Jallianwala Bagh Massacre) in a non violent way. 
• To bring about unity among the people. To inculcate a sense of nationalism. 
• To promote khadi and to attain Swaraj.

The main MODALS are: can, could; may, might; shall, should; will, would; must; ought to; need to; have to.

Limitations of the Mendeleev periodic table :

• Elements with large differences in properties were included in the same group. for example, hard metals like copper and silver were included along with soft metals like sodium and potassium.
• No proper position could be given to the element hydrogen. In the periodic table, the location of hydrogen is uncertain. It was put with alkali metals within 1A class, but certain hydrogen properties are close to those of halogens. So, it can also be put for halogens in the band.
• The increasing order of atomic mass was not strictly followed throughout. For example in cobalt and nickel & Tellurium and Indium.
• As isotopes are atoms of the same element having different atomic masses, they should have been given different positions while arranging them in the order of atomic mass. But this was not done.

The three dominant groups of the Habsburg empire were:

a. It included the Alpine regions – the Tyrol, Austria and the Sudetenland – as well as Bohemia, where the aristocracy was predominantly German-speaking. It also included the Italian-speaking provinces of Lombardy and Venetia.

b. In Hungary, the Magyar speaking population.

c. In Galicia, the aristocracy that spoke Polish.

Dialogue based on an imaginary event showcasing an argument between Natalya and Ivan, based on their personality traits.

Scene : Natalya enters Ivan's house furious.

Natalya : Your dogs have ruined my meadow. Why are you letting them loose?

Ivan : My dogs are in my compound. How do you know it was my dogs, and not  anybody else's, that ruined your meadow?

Natalya : It happened in the middle of the night. I heard the cows mooing when the dogs entered the meadow, and woke up.

Ivan : You should have shooed them away. Why didn't you?

Natalya : Before i came out into the meadow, they ran away. They were frightened by the cow mooing. Next time, ensure you tie your dogs to a pole before going to bed. Now, you ensure that my meadow is cleaned up.

She storms out of his house in anger.

The evolution process supported by examples from the text: 

- Dumb cow---- people’s perception of her lack of sense, stammering which kept her quiet and submissive demeanour, most of the times 

- Going to school----guidance of the teacher and education, overcame stammering- instilled confidence and a sense of self-esteem 

- Did not succumb to the greedy demands of the prospective groom and spoke out. 

Conclusion: 

This journey of Bholi’s growth clearly showcases the idea of being an individual and not being exploited by people or circumstances. Instead, evolves to being a person being proactive and contributing to the wellbeing of others around 

(which is exactly what she decides to do)

Hari Singh returns after regretting stealing money from Anil. He puts the money back in its place and goes to sleep. the next morning he wakes up late(because of his night adventure). When he wakes up in the morning, he finds that Anil had already woken up and even made some tea. He offered Hari Singh some. Then, he took out a note and gave it to Hari Singh and said that he would be paid regularly paid from them. When he touched the note, it was still wet from the rain. this means that Anil knew that Hari Singh was a thief. He still did not show any sign of anger or disgust. By this, he let Hari Singh know that he forgave him.

in both of the situations they got help from an unknown person whom they haven't even met once. the help in either of the case is slightly different.

1st :- Lencho ask God to give him 100 pesos which were given by the postmaster and employees to not shake his faith in God.

2nd :- The author was trapped in huge black storm clouds and out of nowhere a pilot in another plane rescued him out of the clouds. When he landed he wanted to thank the pilot but there wasn't any.

Pre Boards Make Students Serious for Board Exams

The only purpose of grilling session in pre-board exam is to bring out seriousness amongst the candidates. The exams are planned to offer a demo experience of the board exams.

The question paper exposes students to various types of difficulties they may face while attempting the actual answers. The exam is like a practice session to make students serious for upcoming board exams. The result of these internal exams will help you realize which subjects require more attention.

Help Track Your Performance

Pre boards are meant for evaluating your performance. Students can utilize the pre-boards to track their performance. The question paper of pre-board is a replica of board exams.

You must carefully evaluate each subject’s question paper as it will not only help in pinpointing any shortcomings in your revision, but will also further strengthen the areas where you already score well.

But you must not take any stress, even if the results are not good; to make it up for, push yourself harder each day by focusing on the topics in which you lag.

Try not to repeat your mistakes. You should revise seriously. If your pre-board marks are good, then, you should push yourself a little extra to get an excellent score.

CBSE Class 10 Sample Papers 2021 - The Central Board of Secondary Education (CBSE) has released new sample papers with the marking scheme for the upcoming Board Exam 2021. All these sample papers are prepared according to the reduced CBSE syllabus. With the release of the CBSE sample papers, preparations for the board exam will take a kick start as students can now actually prepare according to the pattern followed in the sample papers.

Click on the given link for paper:

<a data-ved="2ahUKEwjdu_eiid_tAhVZWysKHZfRC3YQFjABegQIBRAC" href="http://cbseacademic.nic.in/web_material/Curriculum20/SQP_BP_X/402_Information_Tech_SQP.pdf" ping="/url?sa=t&source=web&rct=j&url=http://cbseacademic.nic.in/web_material/Curriculum20/SQP_BP_X/402_Information_Tech_SQP.pdf&ved=2ahUKEwjdu_eiid_tAhVZWysKHZfRC3YQFjABegQIBRAC" rel="noopener" target="_blank">SQP - CBSE – DEPARTMENT OF SKILL EDUCATION</a>