Tuesday, 29 November 2011

Friday, 25 November 2011

CBSE Class 10th Science | Chapter 1. Chemical Reactions And Equations | Solved Exercises

Question 1. Which of the statements about the reaction below are incorrect?
2PbO(s) + C(s) → 2Pb(s) + CO2(g)

(a) Lead is getting reduced.
(b) Carbon dioxide is getting oxidised.
(c) Carbon is getting oxidised.
(d) Lead oxide is getting reduced.
(i) (a) and (b)
(ii) (a) and (c)
(iii) (a), (b) and (c)
(iv) all
Answer.(i) (a) and (b).

Sunday, 20 November 2011

CBSE Class VII (7th) Geography -Chapter 10. Life in the Deserts -Solved Exercises

Intext Question
Page No. 73
Question 1. Scientists have actually found skeletons of fish in Sahara desert. What could have happened?
Answer. Earlier Shara must have been a green and fertile region. But excessive and intensive use of land for cultivation, large-scale deforestation, excessive pollution of land, air, and water, and soil erosion could have led to the conversion of land into a desert. Gradually the green flourishing region must have converted into yellow barren land.

Saturday, 19 November 2011

CBSE Class VII (7th) Geography -Chapter 9. Life in the Temperate Grasslands -Solved Exercises

Intext Question
Page No.68
Question 1. List names of places where you have observed grass growing, e.g, lawns, cricket field, between cracks of a side walk etc.
Answer. Road side, ground, grazing lands, farms.

Question 2. Velds lie in the Southern hemisphere.When it is summers in velds, what season would it be in the pairies?
Answer. When it is summers in velds, it would be winters in the pairies.

Friday, 18 November 2011

CBSE Class VII (7th) Geography -Chapter 8. Human Environment : Interactions -TheTropical and the Subtropical Region-Solved Exercises

Intext Question.

Page No.60.

Question 1. River Brahmputra is known by different names in different places.Find the other names of the river.
Answer. Tsangpo (in Tibet),Siang,Dihang,Jamuna(in Bangaladesh) are the other names of the river Brahmputra.

 Solved Exercises 
 CBSE Class VII (7th) Geography -Chapter 8. Human Environment : Interactions -The Tropical and the Subtropical Region

Tuesday, 15 November 2011

CBSE Class VII (7th) Geography -Chapter 7. Human Environment-Settlement, Transport and Communication.-Solved Exercises

Intext Questions : Chapter 7.Human Environment-Settlement, Transport and Communication

Page No. 49
Question. Where do you find dwelling made of ice? Who makes them and what are they called.?
Answer. Dwelling made of ice are found in the Polar Regions. Eskimo make them and they are called igloos.

Page No. 49
Thing To Do
Question. List the different modes of transport used by the students of your class while coming to school
Answer. Transport used by the students of our class while coming to school :

Monday, 14 November 2011

CBSE Class VII (7th) Geography -Chapter 6. Natural Vegetation and Wild Life -Solved Exercises

Question 1. Answer the following questions.
Q(i).Which are the two factors on which the growth of vegetation mostly depends?
Answer.Two factors on which the growth of vegetation depend are : (i) temperature and (ii) moisture.

Q(ii). Which are the three broad categories of natural vegetation?
Answer.

Sunday, 13 November 2011

CBSE Class VI ( 6th) Mathematics Chapter 2. Whole Numbers : Exercise 2.1

Question 1. Write the next three natural numbers after 10999.
Answer:
Three natural numbers after 10999

(1) 10999+1=11000

(2) 11000+1=11001

(3) 11001+1=11002





Saturday, 12 November 2011

CBSE Class VII (7th) Geography -Chapter 5. Water - Solved Exercises

Question 1.Answer the following questions.
Q(i).What is precipitation?
Answer. Precipitation in the deposition of moisture from the atmosphere onto the earth's surface.This may be in form of rain,hail,frost,fog,sleet or snow.

Q(ii).What is water cycle?
Answer..The process by which water continually changes its form and circulates between oceans, atmosphere and land is known as the water cycle.

Thursday, 10 November 2011

CBSE Class VII (7th) Geography -Chapter 4. Air - Solved Exercises

Question1.Answer the following questions.
Q(i).What is atmosphere?
Answer.A huge blanket of air by which our earth is surrounded is called atmosphere.
The atmosphere have following layers :
(a) Troposphere.
(b)Stratosphere
(c) Mesosphere
(d) Thermosphere
(e) Exosphere

Wednesday, 9 November 2011

CBSE Class VII (7th) Geography -Chapter 3. Our Changing Earth -Solved Exercises

Question1.Answer the following questions.
Q(i).Why do the plates move?
Answer.The plates move due to endogenic forces in the interior of the earth.

CBSE Class VII (7th) Geography -Chapter 2. Inside Our Earth

Question1. Answer the following questions.
Q(i). What are the three layers of the earth?
Answer.Crust, Mantle and Core are the three layers of the earth
Three Layers of the Earth

Tuesday, 8 November 2011

CBSE Class VII (7th) Geography -Chapter 1. Environment - Solved Exercises

Question 1. Answer the following questions.
Q(i) . what is an ecosystem?
Answer. The system formed by the interaction between living organisms themselves and between living and their surroundings is called an ecosystem.
Ecosystem

Thursday, 3 November 2011

CBSE Class VI ( 6th) Mathematics Chapter 1 : Knowing our Numbers -Try These (Extra Solved Questions and Examples with in Chapter)

Try these : (Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 2

Q. Can you instantly find the greatest and the smallest numbers in each row?
1.382, 4972, 18, 59785, 750Ans. 59785 is the greatest and 18 is the smallest.
2.1473, 89423, 100, 5000, 310.Ans. 89423 is the greatest and 100 is the smallest.
3.1834, 75284, 111, 2333, 450Ans.75284 is the greatest and 111 is the smallest.
4.2853, 7691, 9999, 12002, 124Ans. 12002 is the greatest and 124 is the smallest.