Monday, 23 December 2013

CBSE Class 10th Science | Chapter 11. The Human Eye and the Colourful World Solved Exercises

Solved Exercises | Chapter 11. The Human Eye and the Colourful World |Science | CBSE Class 10th

Question 1. The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to
(a) presbyopia.
(b) accommodation.
(c) near-sightedness.
(d) far-sightedness.

Answer. (b) accommodation.

Sunday, 1 December 2013

CBSE Class 10th Science | Chapter 10. Light – Reflection and Refraction | Solved Exercises

Solved Exercises | Chapter 10. Light – Reflection and Refraction | Science | Class 10th |CBSE

Question 1. Which one of the following materials cannot be used to make a lens?
(a) Water
(b) Glass
(c) Plastic
(d) Clay

Answer. (d) Clay

Saturday, 30 November 2013

Chapter 2. Physical Features Of India | Geography | Class 9th CBSE

Exercises |Chapter 2. Physical Features Of India | Geography | CBSE Class 9th

Question 1. Choose the right answer from the four alternatives given below:

(i) A landmass bounded by sea on three sides is referred to as

(a) Coast
(b) Island
(c) Peninsula
(d) none of the above

Answer : (c) Peninsula

Friday, 29 November 2013

Chapter 1 India : Size and Location | Geography | Class IX (9th) CBSE | Solved Exercises


Question 1. Choose the right answer from the four alternative given below:

(i) The Tropic of Cancer does not pass through.

(a) Rajasthan
(b) Chattishgarh
(c) Orrisa
(d) Tripura

Answer : (c) Orrisa

CBSE Class 10th Science | Chapter 9 : Heredity and Evolution | Solved Exercises

Solved Exercises | Chapter 9 : Heredity and Evolution | CBSE Class 10th Science

Question 1. A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as
(a) TTWW
(b) TTww
(c) TtWW
(d) TtWw

Answer. (d) TtWw

Saturday, 23 November 2013

CBSE Class 10th Science | Chapter 8 : How do Organisms Reproduce ? | Solved Exercises

Exercises | Chapter 8 : How do Organisms Reproduce? | Science |Class 10th | CBSE
Question 1. Asexual reproduction takes place through budding in
(a) amoeba.
(b) yeast.
(c) plasmodium.
(d) leishmania.

Answer. (b) yeast

Thursday, 21 November 2013

CBSE Class 10th Science | Chapter 7 : Control and Coordination | Solved Exercises

 Question 1. Which of the following is a plant hormone?
(a) Insulin
(b) Thyroxin
(c) Oestrogen
(d) Cytokinin.


Answer. (d) Cytokinin

Saturday, 9 November 2013

CBSE Class 10th Science | Chapter 6. Life Processes | Solved Exercises




Question 1. Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans?
Answer. In multi-cellular organisms like humans, various body parts have specialized in the functions they perform. All the cells with in different parts of human body need oxygen but all are not exposed to surrounding environment for intake of oxygen through diffusion. Therefore, process of diffusion is insufficient to meet the oxygen requirements of multi-cellular organisms like human

Wednesday, 16 October 2013

CBSE Class 9th Science | Chapter 12. Sound | | Solved Exercises

Question 1. What is sound and how is it produced?
Answer. Sound is a form of energy which produces a sensation of hearing in our ears.Sound is produced due to vibration of different objects and needs a material medium for its propagation. Sound travels as a longitudinal wave through a material medium by creating a series of successive compressions and rarefactions . In sound propagation, it is the energy of the sound that travels and not the particles of the medium. We can produce sound by plucking, scratching, rubbing, blowing or shaking different objects

Saturday, 5 October 2013

CBSE Class 9th | Science | Chapter 11. Work And Energy | Solved Exercises

Intext Questions | Page 148 | Chapter 11. WORK AND ENERGY| CBSE Class 9th  Science 

Question 1. A force of 7 N acts on an object. The displacement is, say 8 m in the direction of the force. Let us take it that the force acts on the object through the displacement. What is the work done in this case ?
 Answer. Work done (W) on an object is equal to the product of magnitude of the force (F) and the distance moved by the body (s) in the direction of the applied force
Work done (W) = Force(F) × Displacement (s)
∴ W = 7 N × 8 m = 56 J

Friday, 27 September 2013

CBSE Class 10th Science | Chapter 5. Periodic Classification of Elements | Solved Exercises

Things to remember :
  • From only 30 elements known around year 1800, today we have list of 114 known elements
  • Elements are classified on the basis of similarities in their properties.
  • Döbereiner grouped the elements into triads and Newlands gave the Law of Octaves.
  • Mendeléev arranged the elements in increasing order of their atomic masses and according to their chemical properties.

Saturday, 10 August 2013

Chapter 2. Principles Of Management | Business Studies | CBSE Class XII (12th) | Questions & Answers

CONCEPT MAPPING

  • Concept: Principles of management are general guidelines which can be used under certain situations.
  • Nature:
    1. Universal applicability
    2. Formed by practice
    3. Flexible
    4. Mainly behavioural
    5. Cause and effect relationships
    6. general guidelines contingent

Wednesday, 24 July 2013

CBSE Class IX (9th) Science | Chapter 10. GRAVITATION | Solved Exercises

Question 1.How does the force of gravitation between two objects change when the distance between them is reduced to half 


Answer. According to the law of gravitation , the force of attraction between any two objects of mass m1 and m2 is proportional to the product of their masses and inversely proportional to the square of the distance 'R' between them.
As given here F =
Gm1 × m2

Saturday, 6 July 2013

CBSE Class IX (9th) Science | Chapter 9. FORCE AND LAWS OF MOTION | Solved Exercises


Question 1. An object experiences a net zero external unbalanced force. Is it possible for the object to be travelling with a non-zero velocity? If yes, state the conditions that must be placed on the magnitude and direction of the velocity. If no, provide a reason.

Answer : Yes, it possible for an object to be traveling with a non-zero velocity, if the object experiences a net zero external unbalanced force.

Saturday, 20 April 2013

Chapter 16. LIGHT | Science | CBSE Class VIII (8th) | Solved Exercises

Question 1. Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room. Explain.

Answer : We can not see objects in the dark room without the presence of light or a lighted object it self . We may see an object only when, the light from an object enters our eyes.

Sunday, 14 April 2013

Chapter 15. SOME NATURAL PHENOMENA |Science | CBSE Class VIII (8th) | Solved Exercises

Select the correct option in Questions 1 and 2.
Question 1. Which of the following cannot be charged easily by friction?

  1. (a) A plastic scale
  2. (b) A copper rod
  3. (c) An inflated balloon
  4. (d) A woolen cloth.
Answer : (b) A copper rod

Monday, 8 April 2013

Chapter 14. CHEMICAL EFFECTS OF ELECTRIC CURRENT | Science | CBSE Class VIII (8th) | Solved Exercises

Things to remember....

  1. Some liquids are good conductors of electricity and some are poor conductors.
  2. Most liquids that conduct electricity are solutions of acids, bases and salts.
  3. The passage of an electric current through a conducting liquid causes chemical reactions.
  4. The resulting effects are called chemical effects of currents.
  5. The process of depositing a layer of any desired metal on another material, by means of electricity, is called electroplating.

Friday, 5 April 2013

Chapter 13. SOUND |Science | CBSE Class VIII (8th) | Solved Exercises

Things to remember....

  1. Sound is produced by vibrating objects.
  2. In human beings, the vibration of the vocal cords produces sound.
  3. Sound travels through a medium (gas, liquid or solid). It cannot travel in vacuum.
  4. It sends the signals to the brain. This process is called hearing.
  5. The number of oscillations or vibrations per second is called the frequency of oscillation.

Chapter 12. FRICTION |Science | CBSE Class VIII (8th) | Solved Exercises

Things to remember....

  1. Friction opposes the relative motion between two surfaces in contact. It acts on both the surfaces.
  2. Friction depends on the nature of surfaces in contact.
  3. For a given pair of surfaces friction depends upon the state of smoothness of those surfaces.

Sunday, 24 March 2013

Chapter 11. Force And Pressure | Science | CBSE Class VIII (8th) | Solved Exercises


Question1. : Give two examples each of situations in which you push or pull to change the state of motion of objects.
Answer :
  1. Opening or shutting a door
  2. A cricket ball hit by a batsman  
Hitting a cricket Ball | Chapter 11. Force And Pressure |Science | CBSE Class VIII (8th)  |  Solved ExercisesChapter 11. Force And Pressure |Science | CBSE Class VIII (8th)  | Opening and Closing of a door -Solved Exercises

Friday, 22 March 2013

Chapter 10. Reaching The Age Of Adolescence | Science | CBSE Class VIII (8th) | Solved Exercises

Question 1. What is the term used for secretions of endocrine glands responsible for changes taking place in the body?
Answer :The secretions of endocrine glands responsible for changes taking place in the body is called hormones.Hormones are chemical substances, which are released by endocrine glands directly into the blood stream.. The changes which occur at onset of puberty and adolescence are controlled by hormones

Thursday, 21 March 2013

Chapter 9. REPRODUCTIION IN ANIMALS | Solved Exercises | CBSE Class VIII (8th) Science

  • Question 1. Explain the importance of reproduction in organisms.
  • Answer : The process of reproduction in organisms is essential for the continuation of theirs respective species. The reproduction in organisms is very important as it ensures the continuation of similar kinds of individuals, generation after generation.In larger context, reproduction in various species of animals and plants kingdom, forms part of ecosystem and which helps in maintaining it, by evolution chain. 
  •  

Wednesday, 20 March 2013

CBSE Class VIII (8th) Science | Chapter 8. CELL — STRUCTURE AND FUNCTIONS | Solved Lesson Exercises

Question 1. Indicate whether the following statements are True (T) or False (F).
  1. Unicellular organisms have one-celled body. (T/F)
  2. Muscle cells are branched. (T/F)
  3. The basic living unit of an organism is an organ. (T/F)
  4. Amoeba has irregular shape. (T/F)

Tuesday, 19 March 2013

CBSE Class 6th ( VI) Mathematics Chapter 12. Ratio and Proportion: Exercise 12.1 Solved

Things to remember..

When, we compared the two quantities in terms of ‘how many times’. This comparison is known as the Ratio. We denote ratio using symbol ‘:’ Consider the following example : DIsha’s weight is 15 kg and her father’s weight is 60 kg. How many times Father’s weight is of Isha’s weight? It is 4 times.
∴ The ratio of father’s weight to Disha’s weight = 60/15 = 4/1= 4:1  
1. There are 20 girls and 15 boys in a class. 
(a) What is the ratio of number of girls to the number of boys? 
(b) What is the ratio of number of girls to the total number of students in the class?
  

Sunday, 10 March 2013

Sample Question Papers for CBSE Class XII (12th) Board Exam. 2012

Sample Paper for CBSE Class X (10th) for Term I (First Term September)

Sample Paper for CBSE Class IX (9th) for Term I (First Term September)

Sample Paper for CBSE Class IX (9th) for Term II (Second Term March)

Sample Paper for CBSE Class X (10th) for Term II (Second Term March)

Thursday, 21 February 2013

Friday, 11 January 2013

CBSE Class VII (7th) History| Our Pasts-II: Chapter 10. Eighteenth Century Polictical Formationsl | Solved Exercises

               
Intext Question Page No. 139

Q 1. See chapter 4, Table 1, which group of people  
challenged Mughal authority for the longest time  in Aurangzeb's reign?  
Answer: Marthas challenged Mughal authority for the
longest time in Aurangzeb's reign.

CBSE Class VII (7th) History-Out-Pasts-II: Chapter 9. The Making of Regional Cultures | Solved Exercises

Intext Question Page No.122

Question 1. Find out how many states have been created in the last to years.Is each of these states a region?  
Answer:The three states namely- Uttarakhand, Jharkhand and Chhattisgarh have been created in the last 
10 years, Yes, each of these state is a region.
 

CBSE Class VII (7th) History| Our Pasts-II Chapter 8. Devotional-Paths to the Divine|Solved Exercises

Intext Question Page No.105 Question 1.You can observe this process of local myths 
and legends receiving wider acceptance even today Can 
you find some examples around you.

CBSE Class VII (7th) History | Our Pasts - II Chapter 7. Tribes Nomads and Settled Communities|Solved Exercises


Intext Question Page No.92 
Question 1. On a physical map of the subcontinent, identify the areas in which tribal people may haye lived. 
Answer: [Direction: According to the book, tribes used to live in forests, hills, deserts and places different to reach. Therefore, you can search such areas on the physical map of the subcontinent and shade them.

CBSE Class VII (7th) History | Our Pasts-II:Chapter 6. Towns,Traders and Craftspersons|Solved Exercises

Intext Question Intext Question Page No.75 Question 1. What would travller visiting a medieval town expect to find? Answer: A traveler visiting a medieval town is expected to find out what 
type of a town it is _ temple town, administrative centre, commercial town
 or a port town, etc. Intext Question Page No.76 Question 1. What do you think people regarded Thanjavur as a greate town? Answer: 1. Thanjavur was the capital of Chola empire. 2. Thanjavur was a temple town, with Rajarajeshvara temple in it. 3. It gave employment to a huge number of people thus, becoming a centre 
of opportunities. Due to all these reasons. Thanjavur was regarded as a great town. Intext Question Page No.77 Question 1. Which do you think were the advantages of using this 
(lost wax) technique? Answer. The 'lost wax)' technique had the following advantage: 1. It was a quick way to make statues. 2. Wax was a reusable material. 3. Statues of any desired shape could be produced quickly through thus
 technique. 4. The Bronze statues were not at all hollow from inside. They were 
solidified 
and had long life. Intext Question Page No.78 Question 1. Make a list of towns in your district and try to classify these 
as administrative centres or as temple/pilgrim centers? Answer: Students, do it youreselves. Hint: Ask your teacher or Parents to tell you about different types of 
towns in your district. Intext Question Page No.79 Question 1. Find out more about present-day taxes on markets; who collects 
these, how are they collected and what are they used for? Answer. 1. The present-day texes on the markets are property tax, service
 tax, etc. 2. Central or State government collect these taxes through revenue 
departments. 3. The are collected in cash. 4. The money, thus, collected is used for walfare of the society. Intext Question Page No.80 Question 1. What impact do you think this would have had on the 
lives of people in towns and villages? Make a list of artisons 
livining in towns? Answer: The greate circulation of people and goods must had have 
following inpacts on the liveas of people living in towns and villages: 1. People in villages and towns must have felt that their lives have
 changed due to such a greate circulation. 2. They would have become busier than ever before. 3. Their incomes must have increased. 4. Their time for the family would have reduced and they would have 
begun giving more time to the commerical activities, such as 
circulation of goods and people. 5. The towns must have had following artisans-blacksimth, goldsimith,
 wood carver. metal worker, gardner etc. Intext Question Page No.83 Question 1. What do you think the city was fortified? Answer: Hampi was a trade as well as temple town. And temples, 
were the centres of wealth and the honour of kings. In order to 
protect the people from the attack of the enemy, the town of Hampi
 was fortified. Intext Question Page No.85 Question 1. Why did the English and the Dutch decide to establish
 settlements in Masulipatnam? Answer: 1. Masulipatnam was thse most important port of the Andhra coast. 2. It had the convenience of the place where ship can anchor. 3. It was the trade town connected to the hinterland Due to all
 such as resons, the Dutch and the English decide to establish
 settlements in Masulipatnam. Intext Question Page No.88 Q 1. You are plan a journey from Surat to west Asia in the 
seventheen century. What are the arrangements you will make? Answer: If would plan a journey from Surat to west Asia in the 
17th centuary. I would make the following arrangements: 1. I would get a confirmed reservation in one of the ships 
travelling on the rout. 2. I would send some money to west asia through hundi, ass it
 woult not be wise to carry money on a ship journey. 3. I would look for if I could do some businesses on my journey. Additional Question. Q 1. What type of town existed in the medieval period? Answer. The town existed in the medieval period were-temple towns,
 administrative centres, commercial centre or port towns. Q 2. Who was the architect of Rajarajeshvara temple in Thanjavur. Answer: Kunjaramallan Rajaraja Perunthachchan was the architect of 
Rajarajeshvara temple in Thanjavur . --------------------------------------------------- Exercises Question 1. Fill in the blanks: (a) The Rajeshvara Temple was built in _____. (b) Ajmer is associated with the Sufi saint ____. (c) Hampi was the capital of the _____ Empire. (d) The Dutch established a settlement at in Andhra Pradesh______. Answer: (a) The Rajeshvara Temple was built in Thanjavur. (b) Ajmer is associated with the Sufi saint Khwaja Muinuddin Chisti. (c) Hampi was the capital of the Vijayanagara Empire. (d) The Dutch established a settlement at in Andhra Pradesh Masulipatnam. Question 2.State wether true or false. (a) We Know the name of the architect of the Rajeshvara temple from 
an inscription (). (b) Merchanta prefferred to travel individually rather than in carvans (). (c) Kabul was a major centre for trade in elephants (). (d) Surat was an importqant trading port on the Bay of Bengal (). Answer: 
(a)We Know the name of the architect of the Rajeshvara temple from an
 inscription. (True) (b) Merchanta prefferred to travel individually rather than in carvans. (False) (c) Kabul was a major centre for trade in elephants. (False) (d) Surat was an importqant trading port on the Bay of Bengal (False) Question 3. How was water supplied to the city of Thanajavur? Answer: Thanjavur was situated near the pernninal river Kaveri.
It was from this river that was water supplied to the city.
Also the water supply from the city came from wells and tanks.  

Question 4. Who lived in "Black Towns" in cities such as Madras? 
Answer: The native trader, craftspersons, merchants and artisans used to live in the
 "Black Towns" in the cities such as Madaras. 

 Letu's Understand 
Question 5. Why do you think towns grew around temples? 
Answer: The towns grew around temples due to the following resons:  
1. Temple were often central to the economy and society.  
2. Rulers, who built temples, donated land and money to carry out elaborate rituals, 
feed pilgrims and priests and celebrate festivals.  
3. Pilgrims who flocked to the temples also made donations. 
4. Temple authorities used their wealth to finance, trade and banking.  
5. Gradually, a large number of priests, workers, artisons, traders etc. settle near the
 temple to the catter to its needs and those of th e pilgrims. In this ways, towns got 
developed around temples. 

Q 6. How importants was craftpersons for the building and maintenance of temples?  
Answer: Temples were the places to display the most sophisticated art work. Therefore,
 the craftspersons were important for the building and maintenance of temple they performed following activites: 
1. The craftspersons of Bidar were so famous for their inlay work in copper and silver that it can be called Bidri.  
2. The Panchalas or Vishwakarma community, consisting of goldsmiths, bronzesmiths, masons and carpenters, were essential to the buildin of temples. 
3. Weavers often donated maoney to temples.  

Q 7.Why did people from distant lands visit surat? 
Answer. 
1. Surat was the most important medieval port on the west coast of Indian subcotinent. 
2. It was the emporium of western trade during the Mughal period. 
3. Surat was getway trade with west Asia via the Gulf of Ormuz.  
4. Surat has also been called the gate of Mecca, because masny piligrims ship gets sail from here. 
5. There were also serval retail and wholesale shop sellin cotton rtextile.  
6. Surat was famous for the textiles which gold lace brodersSurat (zati). Due to all such resons, many people from distant land visited Surat

Q 8. In what ways crafts production in cities like Calcutta different from that in cities like Thanjavur?  
Answer.
1. Craftspersons were free to be as much cerative as they could be. 1. Craftspersons had to produce what was demanded by the East India Company.
2. Craftspersons used to live near temple. They always get buyers of their products.2. The craftspersons were forced to live in the "Black Towns". The only buyer of their products was the East India Company.
3. There was no system of advances.3. There existed system of advances, which meant that they have to weave cloth which were already promised to European agents.
4. Weavers had the freesom of selling their own cloths or weaving by their own patterns.4. Weavers no longer had liberty of selling their own cloth or weaving by their own patterns
5. They didn't have to reproduce same designs.5. They had to reproduce the designs suplied to them by the company agents.

Let's Discuss  
Q 9. Compare any one of the cities described in this chapter with a town or a village with which you are familar. Do you notice any similarties differences? 
Answer.  Students do it yoyreselves. [Hint : Take up the present-day of New Delhi, The capital of India] Similarities- 
1. It is the seat of government (Parliament) 
2. Justic is Done here. (Supreme Court) 
3. Many people from distant places visit here. 
4. Many traders and powerful nobles live here. 
5. It is the commercial complex. 
6. It is cultural development centre. 
7. It provides employment opportunities, etc. 

Differences-(with Thanjavur,the capital of Cholas) 
1. It size is much larger. 
2. It has an elborate transportation system. 
3. It is expanding day by day. 
4. It also experiences unlawful activities. 
5. Migrants fill up the present-day Delhi, etc. 

 Q 10. What were the problems encountered by merchants? Do you thinkk some of these problems persist today? 
Answer. Some of the problems faced by the merchants were us under: 
1. They had to travel through forests and there was always the fear of robbers, Therefore, merchants travelled in caravans. 
2. Merchants such as Mulla Abdul Ghafur and Indian Virji Vora, who owned a large number of ships were subdued by the east Indian Company ships. Then, they have to work as the agents of the company instead of running their own bussiness. 
3. Yes, such problem do exist today. 

Let's Do 
Q 11.Find out more about the architecture of either Thanjavur or Hampi, and prepare a scrap book illustrating temples and other buildings from these cities. 
Answer. Students do it your selves [Hint: Students can search from the internet.]  

Q 12. Find out about any present-day pilgrimage centre. Why do you think people go there? What do there? Are there any shops in the area? if so, what is bought and sold there? 
Answer. Students, do it yourselvess.
 [Hint: Think of Vsishno Devi Temple of Hazratbasl Mosque in Kashmir. People go there on pilgrimage.There are shops of local merchants and traders in these pilgrimage centres. A part from selling prasad the shopd deals with shawls and other local products.]

Wednesday, 9 January 2013

CBSE Class VII (7th) History-Our Pasts-II:Chapter 5. Rulers-And-Buildings-Solved Exercises

Intext Question

Intext Question Page No.60
Question 1. What would have been the impact of a building like the Qutb Minar or observes in the thirteenth century?
 Answer. The building lke Qutb Minar would have had a huge impact such as that of Taj Mahal today, on the observes in the thirteenth century.  

CBSE Class 7th (VII) History- Our Pasts - II :Chapter 4 The Creation of an Empire The-Mughal Dynasty-Solved Exercises


In Text Question

In Text Question Page No.46
Question. Do you think this painting suggests that the Mughals claimed kingship as a birthright?
Answer. As this painting portraits the hierarchy of the Mughal emperors right from Timur to Aurangzed, it depicts tat the Mughals claimed kingship as a birthright.