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Thursday 10 April 2014

Class 6 Ch 1 Knowing Our Numbers Exercise 1.1 Answers

In Class 6 NCERT Maths book, the first chapter is Knowing Our Numbers. The questions in the exercises of this chapter are fairly easy, but still, some of them are tricky. So in order to help all the students out there in Class 6, I am posting all the answers for Chapter 1, Knowing Our Numbers in NCERT Maths book.

Class 6 Ch 1 Knowing Our Numbers Exercise 1.1 Answers

Exercise 1.1

1. Fill in the blanks:

(a). 1 lakh = 10 ten thousand.

(b). 1 million = 10 hundred thousand.

(c). 1 crore = 10 ten lakh.

(d). 1 crore = 10 million.

(e). 1 million = 10 lakh.

2. Place commas correctly and write the numerals:

(a). Seventy three lakh seventy five thousand three hundred seven. 73,75,307

(b). Nine crore five lakh forty one. 9,05,00,041

(c). Seven crore fifty two lakh twenty one thousand three hundred two. 7,52,21,302

(d). Fifty eight million four hundred twenty three thousand two hundred two. 58,423,202

(e). Twenty three lakh thirty thousand ten. 23,30,010

3. Insert commas suitably and write the names according to Indian System of Numeration:

(a) 87595762

Part 1: 8,75,95,762

Part 2: Eight crore seventy five lakh ninety five thousand seven hundred sixty two

(b) 8546283

Part 1: 85,46,283

Part 2: Eighty five lakh forty six thousand two hundred eighty three

(c) 99900046 

Part 1: 9,99,00,046

Part 2: Nine crore ninety nine lakh forty six

(d) 98432701

Part 1: 9,84,32,701

Part 2: Nine crore eighty four lakh thirty two thousand seven hundred one

4. Insert commas suitably and write the names according to International System of Numeration:

(a) 78921092 

Part 1: 78,921,092

Part 2: Seventy eight million nine hundred twenty one thousand ninety two

(b) 7452283

Part 1: 7,452,283

Part 2: Seven million four hundred fifty two thousand two hundred eighty three

(c) 99985102 

Part 1: 99,985,102

Part 2: Ninety nine million nine hundred eighty five thousand one hundred two

(d) 48049831

Part 1: 48, 049,831

Part 2: Forty eight million forty nine thousand eight hundred thirty one

Hope you found the answers of the Maths NCERT Chapter 1 for Class 6 useful but if you need any help, leave a comment, we would be happy to help you out!
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Wednesday 12 March 2014

Class 9 Democracy in the Contemporary World Revision Notes

These are the revision notes for class 9 Social Studies Democracy in the Contemporary World, which is a chapter of the Civics book. Please go through them, and you can also download them as a PDF from the link at the end.

During the early 1970s, Chile had a democratically elected government under President Salvador Allende.
The government was liberal towards the workers and the poor people of Chile. Various welfare policies were adopted by the government for emancipating the poor such as milk for the children, distribution of land to landless farmers, and restricting the entry of foreign companies.

Military Coup of 1973

  • A military coup led by General Augusto Pinochet.
  • The President’s house was bombed by the military and Allende died in it.
  • General Augusto Pinochet became the President of Chile and ruled it for the next 17 years. The military government mercilessly killed thousands who supported Allende.


Restoration of Democracy in Chile
Military General Pinochet’s dictatorship came to an end in 1988 after a referendum.
The army’s role in the Chilean government was eradicated and a democratically elected government was formed.
In 2006, Chile got its first women President– Michelle Bachelet

Democracy in Poland

Poland was under the United Workers Party in the 1980s. No other party was allowed to take part in the political process of the country. The state of employment was bad in Poland. The workers could not form their independent trade unions.

A strike was organised by the workers of the Lenin shipyard on 14th August 1980 in Gdansk. It was led by Lech Walesa.

The main demands of the workers were –

  1. Right to form trade unions.
  2. Release of political prisoners.
  3. Removal of censorship on press.


The government had to concede the demands of the workers and a 21- point agreement called the Gdansk Agreement was signed. Workers, under the leadership of Lech Walesa, formed the first independent trade
union of Poland, ‘Solidarity’. Solidarity won the 1990 elections and came to power in Poland. Lech Walesa became the President of Poland.

Features of Democracy

Only the leaders elected by the people can rule the country.
Freedom to organize, freedom to protest and freedom of expression are the rights guaranteed to people.

Most Important Period in the Expansion of Democracy

1975-2000 is the most important period in the expansion of democracy. It experienced various events like the transition to democracy, challenges facing democracy, military coups that destroyed democracies in various countries and reestablishment of democracy through popular revolts and movements. Many countries of Latin America and erstwhile Soviet Union attained democracy during this period.

Democracy at the Global Level

Democracy at the global level is practiced through the international institutions established with the consent of various countries. The United Nations Organisation (UNO) was established after the end of the Second World War in 1945 with the objective of promoting international peace and solidarity. The present membership of the UNO stands at 194. Each country has got equal representation in the UNO and decisions are taken by majority votes, thus promoting democratic ideals. UN General Assembly acts as the legislative body of the UNO and comprise of all 192 member nations.

UN Security Council is the executive of the UNO and is responsible for maintaining international peace and security. It consists of fifteen member nations. However, only five are permanent members of the Security Council. These five nations namely the U.S., the U.K., France, China and Russia have the veto power of annulling any decision taken collectively by all other members.

The finances of the UNO are taken care of by the International Monetary Fund (IMF). It has 185 nations as its members. UNO represents a democratic system. However, there are certain loopholes that defy the democratic ideals. The rich and the powerful countries have an unfair advantage with respect to the functioning of the UNO.

Democracy Promotion
Powerful countries such as the United States of America and the United Kingdom have taken-up the task of promoting democracy at the global level. These powerful countries directly interfere in the matters of non-democratic countries for setting up democracy. Armed attacks on these non-democratic countries have also been used by countries such as the USA. Saddam Hussein’s rule in Iraq was opposed by countries like Britain and the United States as it was not a democratic regime.

Download Democracy in Contemporary World Revision Notes

These were the Democracy in the Contemporary World pdf revision notes for class 9 for the civics course. Download Civics Chapter 1 revision notes, Democracy in the Contemporary World revision notes.
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Friday 7 March 2014

Open Text Book Assessment OTBA Social Studies Class 9 Sample Paper and Study Material

CBSE has introduced the Open Text Book Assessment OTBA into the curriculum of the Class 9 syllabus. Now it is an integral part of the whole paper, and it is worth 10 marks. The following are the sample questions which will help you ace the Open Text Book Assessment OTBA Social Studies exam. Please note that these answers and study material is designed to help students but you can only score high marks if you work hard.

A Tale From the Hills - History

1. In what ways can a natural disaster cause damage?

Answer: A natural disaster causes massive damage in multiple ways. Apart from causing harm to the environment, it destroys lives and public and private properties. Thus, a disaster hampers a state and its people on economic, social, ecological and psychological grounds.

2. What does it mean to live in a city?

Answer: Living in a city means living in high-rise buildings, shopping in malls and eating in food outlets. One is always in the midst of a fast-moving crowd. Cities offer exposure to people from different states, speaking different languages, eating different food and following different traditions. At the same time, living in a city makes one sacrifice the pleasure of living amidst nature.

3. What is your take on the healthcare facilities in rural areas of our country?

Answer: In India, healthcare facilities are not up to mark, especially in rural areas. Every year, a large number of people lose their lives due to non-availability of doctors and other medical convinience in villages. Besides, the limited medical help available in these parts of the country either lacks in quality or is not affordable.

Health is wealth. Therefore, healthcare should be a primary concern and our government should properly plan its health policies and schemes. It should work towards providing proper medical care in the villages. Apart from this, it is equally important to educate the rural public about the importance of maintaining good health.

4. Describe in one line the scene at rehabilitation camps after any natural disaster.

Answer: After any natural disaster, the rehabilitation camps are full of chaos, panic and fear.

5. Do you think promotion of tourism also holds some disadvantages? Given reasons.

Answer: Yes, one of the major disadvantages of promotion of tourism is environmental destruction. To cater to the increasing influx of tourists, unchecked and unplanned development of roads, hotels, shops, restaurants, resorts is carried out. Most of these are built upon forest lands leading to the encroachment of natural boundaries.

6. Why do you think a wedding in a village is a huge affair for the whole village?

Answer: Villages are usually small and people living there know each other quite well. Besides, most villagers are warm by nature. They share the joys and sorrows of others as their own. Unlike in cities, vilages have limited means of reacreation and amusement. Hence, all celebrations in villages, such as weddings, become grand and huge affairs.

7. What do you understand by natural calamity. Give examples. Also, mention the major reasons behind such calamities.

Answer: The term 'natural calamity' refers to any major natural disaster, unfortunate occurrence or phenomenon that results mainly from the natural processes occurring on or inside the Earth. Such calamities may also be a result of human activities that lead to environmental degradation. Examples of natural calamities include floods, earthquakes, volcanic eruptions, etc.

Migration - Geography

1. Use the following information to answer the next questions. Identify and explain the migration law that is being depicted in the above picture. (3 marks)


Answer: Zipf’s Inverse Distance Law is being depicted in the given picture. According to the law, as the distance from the home country to the host country increases, the number of migrants fall and vice versa. You may explain how with the increase in the distance from Town A to other towns, the number of migrants decreases.

2. List and explain the obstacles that hinder the free flow of people from one place to another.

Answer: Physical boundaries and barriers play important roles in the free flow of people, as it might not be possible for all people to cross physical barriers like mountains and oceans. Several legal formalities are involved in the process of migration like visa requirements, work permit requirements, etc. Every country or city has its own political as well as social aspects. Thus, the adaption to these aspects might add to the cost of migration.

3. Shyam, a native of a village in Lucknow, went to the town for elementary education. After completing elementary education, he shifted to the city to pursue secondary education. Later, he moved to Kanpur to complete his higher education and accepted a job there and settled there.

Draw a chart showing the pattern of migration reflected here. On the basis of this chart, identify the type of migration depicted in the given case. Do you think there should be restrictions on these types of movements? Comment with appropriate reasons. (4 marks)



Answer: The type of migration depicted in the given case is step migration. Explain step migration and elaborate on whether there should be restrictions on such movements or not.

4. List any two factors that lead to return migration in India. (2 marks)

Answer: Political factors - Whenever a war breaks out, individuals often come back to their hometowns to be with their families during the unstable situations.
• Economic factors- When an individual gets a better job opportunity in the homeland, he/she decides to come back.
• In addition to this, the individuals are also emotionally attached with their families and therefore, would like to stay with their relatives and friend if they have an opportunity to earn higher income there.
• Moreover, if unemployment increases in the area where the individual has migrated to, he/ she might decide to back to the home town and start its own business.
• Environmental factors - Floods, earthquakes or other natural calamities often force an individual to come back to his/her place of origin.

5. Use the following information to answer the next questions.

‘Brain drain (as depicted in the above picture) poses a serious threat to India’. Give appropriate reasons to justify your answer. (4 marks)




Answer: Yes/No. Build up arguments on the basis of the statement.  Arguments against the statement (No, brain drain does not pose a serious threat to India.) Migration leads to an increase in the income of migrants. These migrants often send part of their incomes (in the form of remittances) to their families in India, thus providing foreign exchange to India. Migrants acquire better skills and technical know-how that can be beneficial to India in case the migrants come back and take up jobs here. Arguments in favour of the statement (Yes, brain drain does pose a serious threat to India.) It leads to the loss of skilled labour force from India such as scientists, engineers, doctors, etc. This loss in skilled labour leads to a decrease in the income of the country as a large number of skilled people migrate. Lack of skilled professionals affects the ability of the companies to undertake research and development. As a result, they continue to produce goods using old and inefficient technologies. This, in turn, leads to a decline in the output of the country. Increase in the number of unskilled workers leads to lesser opportunities for growth for the country. Students often migrate abroad to take advantage of the highly integrated method of teaching. Later, they settle down there only.

6. List various push and pull factors that influence an individual’s decision to migrate. Also, build up a short story to show how any one of the factors works in real life. (4 marks)

Answer: Push factors:
  • Political instability in the homeland
  • Wars
  • Natural calamities like floods, earthquakes, drought, etc.
  • High unemployment
  • Pull factors
  • Better job opportunities 
  • High income
  • Family bonding
  • Marriage
Now, frame a short story. Choose a factor around which you story will be based. In case you choose drought as your push factor, build up your story around it. For example: Ram, a farmer in Shaolapur village of Hisar, used to live happily with his family. Two years back, the village faced a very severe drought. The severity of the drought resulted in an acute shortage of food for the villagers. The villagers started migrating from the village with their families, leaving their ancestral property behind. But Ram was reluctant to leave his village, as he had deep emotional attachment with his village. Soon the conditions became worse, with no food to eat, no water to drink and no chances of any relief. This forced Ram to migrate to the nearby town. For some days, Ram and his family took shelter on the roadsides. He and his wife had to work as laborers at a construction site there. You can expand the story by telling how Ram went back to the village when the conditions there became better, thus, including the role of the pull factor, which is family bonding.

This was the study material from the Open Text Book Assessment OTBA Social Studies for class 9. Please let us know if the comments section your answers. We would be glad to check them. Also, if there is an error please feel free to comment. Good luck for your exams!
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Open Text Book Assessment OTBA English Class 9 Sample Paper 2014 with Solutions

Open Text Book Assessment was introduced by CBSE in the curriculum of Class IX from the year 2014. Open Text Book Assessment or simply OTBA aims to test the understanding of the passages by the students, and the test material will be made available to the student during the exam.

Here are the certain sample questions with complete solutions that will help you practice for your OTBA English Class 9 exams.

Information Technology And Values

1. Moral issues regarding IT- mention any 4.
Ans: Personal information is collected without the individual’s consent; certain software assesses suitability of an individual which can be misinterpreted; companies may use the personal information for their database; individual has no control over where the information is stored or who accesses it)

2. List personal data gathered by IT- any 4.
( Facebook-Clicking “Like” means info/ photo can be shared by your friends; details of websites you have visited; GPS on your travel; medical details of the individual are collected)

3. Advise friends (in any 4 ways) on using Facebook.
( Accept Friend Notification only when you know the person; do not reveal personal details to strangers; do not blindly believe everything which is transmitted through chat or messages; do not post pictures which you are not comfortable with…)

4. Uses of Twitter/ Facebook: any 4
( Social networking system which connects you to friends; platform to express your views; a glimpse into other peoples’ lives; maintain a record of important events in your life…)

5. Misuse of Twitter/ Facebook- any 2
( personal information may be shared with others without your consent; may be difficult to cope with hate messages; becomes a status symbol with number of ‘likes’ turning into a competition…)

6. Freedom of Speech vs. Inciting Public Passions (4)
( Social networking sites encourage you to express your views, pose questions to policy makers; share jokes, anecdotes. However your opinions and statements may be misinterpreted or may incite others to acts of violence)

7. Financial Transactions through Internet Banking
a. Mention any 2 advantages and 2 disadvantages
( No need to carry cash; can shop from the comfort of your home, can take care of routine bill payments, booking of cinema or airline or rail or theatre tickets easy. However, your identity can be hacked; difficult to get refund if payment has been wrongly made…)

b. How can financial companies make use of this information?
(access to details of what you bought- thus judge your financial status; may hound you with offers of discounts and sales etc; may wrongly rate your credit standing)

c. How can we regulate the use and store of this information?
( limited access of personal information to third parties; software which can be made more sophisticated so that assessment is more reliable; ability to block personal information by individual…)

English OTBA Class 9 Study Material


Here are some more questions for comprehension of the text:

  1. How and why is IT becoming an integral part of our lives today?
  2. What is ‘Breach of Privacy’?
  3. What are “ethics”? How do they become important in the IT world?
  4. *Draw a poster on the use and misuse of Technology. Suggest 4 ways to make a Net-user wary of revealing personal details to unknown people.
  5. How well are u connected on FB? How many friends have u made on FB?
  6. Who do you think are more faithful- FB friends or friends next door?
  7. Do you think -FB friends are faithful? How practical is that?
  8. Can children keep pace with the fast growing technology? Comment.
  9. How can schools teach moral values in connection with social networking?
  10. You are Sohan. Your brother is in class IX. Advise your brother to use the Internet ethically. Mention 4 points.
  11. How is learning different from simply using technology for knowledge.
  12. With reference to the statement, “Why learn anything when information is just an internet search away”. Mention the moral challenges regarding this and how can one motivate children to learn?
  13. In today’s high-tech world, how is computer a universal machine?
  14. How is IT a challenge in today’s scenario?
  15. Children should be made aware of the dangers of IT. Elaborate.
  16. Does IT affect the life of a person? Give reasons.
Comprehension Based Questions
  1. a. What was the philosophy of Socrates?
  2. b. What are the two arguments put forward regarding the change?
  3. c. Which are the types under which IT/ Application is categorized?
  4. d. What are the functions of IT?
Even More IT and Values Based Questions for English OTBA English Class 9.
  1. What are the risk factors in IT?
  2. What moral values do we need when using IT?
  3. What are the benefits of IT?
  4. How do we transfer information, little by little?
  5. Why is privacy important to an individual?
  6. What can be understood from the term “Cybernetics”?
  7. What are the implications of “Cybernetics” on our daily life?
  8. How does the computer take functional decisions, which may be incorrect?
  9. Predictions made by Computer based on Complex Logic and Mathematics might result in mistaken Classification. Comment.

Downloading and keeping these OTBA sample questions doesn't mean that you will succeed. To score well in Open Text Book Assessment OTBA English Class 9 test, you must work hard. So I wish you the best of luck for your exams!
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Wednesday 25 September 2013

Maths NCERT Class 9 Rational Numbers Exercise 1.1 Answers

Here are the solutions, and answers to maths NCERT class 9 rational numbers exercise 1.1, which falls in the Chapter 1 of the book. All these answers have been check by us, and are correct. You can use these answers and solutions to check yourself.

ncert maths class 9 exercise 1.1 solutions

Maths NCERT Class 9 Exercise 1.1 Answers

Is zero a rational number ?
Answer 1: Yes. 0 etc., denominator q can also be taken as negative integer.

Find 6 rational numbers between 3 and 4.
Answer 2: There can be infinitely many rationals between numbers 3 and 4, one way is to find them is to add the two numbers, and then divide them by two. By this method we will get one number.

To find another number we can again add and divide the new number by an old number.

Find 5 rational number between 3/5 and 4/5.
Answer 3: Use the same method given in answer 2.

State true or false.
Answer 4: The following are the answers:

  1. True, since the collection of whole numbers contains all the natural numbers.
  2. False, for example – 2 is not a whole number.
  3. False, for example 1/2 is a rational number but not a whole number.
Again, if you run into any doubts, feel free to drop in a comment and we will be glad to help.
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Previous Year Question Paper Arabic 2012-2013 Class 10 CBSE

Before giving an exam, it is the best when you have practiced before. It is true that practice makes one perfect, and with these previous year question papers of Arabic of class 10, you will be able to be more or less perfect. This paper comes directly from the CBSE official website, and is the official previous year question paper of Arabic for Class X.

To download the previous year question paper of Arabic of Class 10, you can right click and select save link as. Then you can print and attempt the questions given here.



But while doing this paper a thing to be kept in mind is that recently, CBSE has changed the pattern of the papers, so the question paper of Arabic of Class 10 of this session may be different from the previous year paper.

Download Paper

You can attempt these questions, and if you manage to solve the complete paper, you can contact us, and we will help you check it, if you like.

The marking scheme has not been provided in this paper by CBSE.
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NCERT Science Class 9 Chapter 1 Matter in Our Surrounding Page 3 Solutions and Answers

Here are the solutions of the NCERT science book, page 3. These questions are part of the chapter Matter in Our Surrounding, which is the chapter 1 in the book. This chapter falls in Chemistry, and these questions are very important for exams and tests.

All these questions have been answered by us. So here are the NCERT Science Class 9 Chapter 1 Matter in Our Surrounding Page 3 Solutions and Answers.

Which of the following are matter? Chair, air, love, smell, hate, almonds, thought, cold, cold drink, smell of perfume.

Answer: Chair almond, cold drink, air, and smell of perfume are matter.
Reasoning: The smell of any substance is the gaseous form of that substance, so it is matter.



Give reasons for the following observation: The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close.

Answer: Gases diffuse at a fast rate. But, if the temperature of the gases is increased, then the rate of diffusion increases. As the rate of diffusion is directly proportional to temperature.

As with an increase in the kinetic energy the particles vibrate faster, and thus, they spread and diffuse faster. 
Thus, the smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close.

A diver is able to cut through water in a swimming pool. Which property of matter does this observation show?

Answer: The ability of a diver to cut through water in a swimming pool shows that matter is made up of particles. When the diver cuts through the water, he exerts some force, due to which the particles seprate and allow him to swim.

Another aspect used in that particles of matter attract each other, as here the diver applies some force due to which he breaks the forces of attraction between the particles.

What are the characteristics of particles of matter?

Answer:
  1. Particles of matter have spaces between them.
  2. Particles of matter are continuously moving.
  3. Particles of mater attract each other.
If you have any queries in any question, you can comment below to ask any question.
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