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1.

Answer thefollowing questions.(i) Why are resourcesdistributed unequally over the Earth?(ii) What is resourceconservation?(iii) Why are humanresources important? (iv) What issustainable development?

Answer»

Answer the
following questions.


(i) Why are resources
distributed unequally over the Earth?



(ii) What is resource
conservation?



(iii) Why are human
resources important?



(iv) What is
sustainable development?

2.

Which part of the map represents an international boundary?

Answer»

Which part of the map represents an international boundary?

3.

What's contour ploughing and contour barriers in detail please?

Answer»

What's contour ploughing and contour barriers in detail please?

4.

Question 10 Consider the list of terms given below: (i) Tsunami (ii) Landslides (iii) Floods (iv) Lightning Earthquakes can cause (a) (i), (ii) and (iii) (b) (ii) and (iv) (c) (ii), (iii) and (iv) (d) (iii) and (iv)

Answer»

Question 10

Consider the list of terms given below:
(i) Tsunami
(ii) Landslides
(iii) Floods
(iv) Lightning
Earthquakes can cause
(a) (i), (ii) and (iii)
(b) (ii) and (iv)
(c) (ii), (iii) and (iv)
(d) (iii) and (iv)

5.

Q21. Consider the following statements related to Natural Rubber production in India. 1. India is world’s third largest natural rubber producer after Indonesia and Brazil. 2. Sikkim is the biggest producer of the rubber in India. 3. The most important condition for the growth of rubber tree is low temperature. Which of the above statement(s) is/are correct?

Answer»

Q21. Consider the following statements related to Natural Rubber production in India.

1. India is world’s third largest natural rubber producer after Indonesia and Brazil.

2. Sikkim is the biggest producer of the rubber in India.

3. The most important condition for the growth of rubber tree is low temperature.

Which of the above statement(s) is/are correct?


6.

Would it function any differently if the diversity was much less?

Answer» Would it function any differently if the diversity was much less?
7.

(क) तूफ़ान क्या होता है? बादलों को तूफ़ानी क्यों कहा गया है?(ख) साल के किन-किन महीनों में ज़्यादा बादल छाते हैं?(ग) कविता में 'काले' बादलों की बात की गई है। क्या बादल सचमुच काले होते हैं।(घ) कक्षा में बातचीत करो और बताओ की बादल किन-किन रंगों के होते हैं।

Answer»

(क) तूफ़ान क्या होता है? बादलों को तूफ़ानी क्यों कहा गया है?



(ख) साल के किन-किन महीनों में ज़्यादा बादल छाते हैं?



(ग) कविता में 'काले' बादलों की बात की गई है। क्या बादल सचमुच काले होते हैं।



(घ) कक्षा में बातचीत करो और बताओ की बादल किन-किन रंगों के होते हैं।

8.

The method of irrigation in which water reaches the root zone of the plants drop by drop is:

Answer»

The method of irrigation in which water reaches the root zone of the plants drop by drop is:


9.

Group-I lists tool/instrument while Group-II lists the method of surveying. Match the tool/instrument with the corresponding method of surveying. Group-I Group-II P. Alidade1. Chain SurveyQ. Arrow2. LevellingR. Bubble tube3. Plane table surveyingS. Stadia hair4. Theodolite surveying

Answer» Group-I lists tool/instrument while Group-II lists the method of surveying. Match the tool/instrument with the corresponding method of surveying.

Group-I
Group-II






















P. Alidade1. Chain Survey
Q. Arrow2. Levelling
R. Bubble tube3. Plane table surveying
S. Stadia hair4. Theodolite surveying


10.

सभी ने कहा, "हमारे महाराज कर्ण जैसे ही दानी हैं।" पता करो कि–(क) कर्ण कौन थे?(ख) कर्ण जैसे दानी का क्या मतलब है?(ग) दान क्या होता है?(घ) किन-किन कारणों से लोग दान करते हैं?

Answer»

सभी ने कहा, "हमारे महाराज कर्ण जैसे ही दानी हैं।" पता करो कि–



(क) कर्ण कौन थे?



(ख) कर्ण जैसे दानी का क्या मतलब है?



(ग) दान क्या होता है?



(घ) किन-किन कारणों से लोग दान करते हैं?

11.

what is competetive inhabitors

Answer» what is competetive inhabitors
12.

To find the area of a polygonal region:

Answer»

To find the area of a polygonal region:


13.

Distinguish between the following (i) Agro-based and mineral-based industry (ii) Public-sector and joint-sector industry

Answer»

Distinguish
between the following


(i)
Agro-based and mineral-based industry



(ii)
Public-sector and joint-sector industry

14.

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}-->Which among the following animals doesn't yield wool?

Answer»

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}-->

Which among the following animals doesn't yield wool?

15.

The underground layer of material that allows water to move through very easily is known as ______.

Answer»

The underground layer of material that allows water to move through very easily is known as ______.


16.

Write down points without fully expanding verbs, numbering them as you do.

Answer» Write down points without fully expanding verbs, numbering them as you do.
17.

Question 7Which statement is incorrect about endangered species?(a) Their number has decreased drastically.(b) They might become extinct in the near future.(c) They pose a danger to other animals.(d) Their natural habitat needs to be protected.

Answer» Question 7

Which statement is incorrect about endangered species?



(a) Their number has decreased drastically.

(b) They might become extinct in the near future.

(c) They pose a danger to other animals.

(d) Their natural habitat needs to be protected.
18.

Find the products:.

Answer»

Find the products:



.

19.

Separating petroleum products is known as:

Answer»

Separating petroleum products is known as:


20.

Q.What is the root-mean-square speed of a CO2 (g) particle at a temperature of 250 K? (a) 1.18 cm/s b)3.76 x 10^4)cm/s. (c) 1.42 10^9 cm/s Q.At what temperature will a sample of O2 have a root mean square speed of 3.68- 104 cm/s . Assume pressure of exactly one atm. (a) 521K B)174K C)17600K D) Non

Answer» Q.What is the root-mean-square speed of a CO2 (g) particle at a temperature of 250 K? (a) 1.18 cm/s b)3.76 x 10^4)cm/s. (c) 1.42 10^9 cm/s Q.At what temperature will a sample of O2 have a root mean square speed of 3.68- 104 cm/s . Assume pressure of exactly one atm. (a) 521K B)174K C)17600K D) Non
21.

49.When solid is insoluble then also Hydration energy is released?

Answer» 49.When solid is insoluble then also Hydration energy is released?
22.

What is sericulture?

Answer»


What is sericulture?



23.

Treeless terrestrial biome of cold climate is

Answer»

Treeless terrestrial biome of cold climate is


24.

Question 4 (d)Coal can be drawn into wires. (True/False)

Answer» Question 4 (d)

Coal can be drawn into wires. (True/False)

25.

mountain roads are generally made winding upwards than going straight up GIVE REASON WHY

Answer» mountain roads are generally made winding upwards than going straight up GIVE REASON WHY
26.

In which sector industries are owned and operated by individuals or a group of individuals?

Answer»

In which sector industries are owned and operated by individuals or a group of individuals?


27.

To which category does the iron and steel industry belong to:

Answer»

To which category does the iron and steel industry belong to:


28.

What is Cartasian

Answer» What is Cartasian
29.

Pick the odd one out.

Answer»

Pick the odd one out.

30.

Write any two difficulties faced by people living at high altitudes.

Answer» Write any two difficulties faced by people living at high altitudes.
31.

Answer the following questions. (i) What is agriculture? (ii) Name the factors influencing agriculture. (iii) What is shifting cultivation? What are its disadvantages? (iv) What is plantation agriculture? (v) Name the fibre crops and name the climatic conditions required for their growth.

Answer»

Answer the
following questions.


(i)
What is agriculture?



(ii)
Name the factors influencing agriculture.



(iii)
What is shifting cultivation? What are its
disadvantages?



(iv)
What is plantation agriculture?



(v)
Name the fibre crops and name the climatic conditions required for
their growth.

32.

How can we control water pollution

Answer» How can we control water pollution
33.

Horticulture is the branch of agriculture that includes: Select the correct code

Answer»

Horticulture is the branch of agriculture that includes:

Select the correct code


34.

संदर्भ सहित व्याख्या कीजिए-(क) औरै भाँति कुंजन ................. छबि छ्वै गए।(ख) तौ लौं चलित ......... बनै नहीं।(ग) कहैं पद्माकर .............. लगत है।

Answer» संदर्भ सहित व्याख्या कीजिए-

(क) औरै भाँति कुंजन ................. छबि छ्वै गए।

(ख) तौ लौं चलित ......... बनै नहीं।

(ग) कहैं पद्माकर .............. लगत है।
35.

Mercury does not have an atmosphere. What effect does this have on the temperature of its surface?

Answer» Mercury does not have an atmosphere. What effect does this have on the temperature of its surface?
36.

What kinds of work or jobs do people not want to do? Why? So, who does this kind of work? Why do people do this kind of work that others do not want to do?

Answer»

  • What kinds of work or jobs do people not want to do? Why?


  • So, who does this kind of work? Why do people do this kind of work that others do not want to do?



37.

Question 30Non-metals are usually poor conductors of heat and electricity. They are non-lustrous; non-sonorous; non-malleable and are coloured.(a) Name a lustrous non-metal.(b) Name a non-metal which exists as a liquid at room temperature.(c) The allotropic form of a non-metal is a good conductor of electricity. Name the allotrope.(d) Name a non-metal which is known to form the largest number of compounds.(e) Name a non-metal other than carbon which shows allotropy.(f) Name a non-metal which is required for combustion.

Answer» Question 30

Non-metals are usually poor conductors of heat and electricity. They are non-lustrous; non-sonorous; non-malleable and are coloured.

(a) Name a lustrous non-metal.

(b) Name a non-metal which exists as a liquid at room temperature.

(c) The allotropic form of a non-metal is a good conductor of electricity. Name the allotrope.

(d) Name a non-metal which is known to form the largest number of compounds.

(e) Name a non-metal other than carbon which shows allotropy.

(f) Name a non-metal which is required for combustion.
38.

What is levelling effect. Explain in detail

Answer» What is levelling effect. Explain in detail
39.

Statements: The Cabinet of State X took certain steps to tackle the milk glut in the state as the cooperatives and government dairies failed to use the available milk. - A news report. Conclusions: I. The milk production of State X is more than its need. II. The Government and co-operative dairies in State X are not equipped in terms of resources and technology to handle such excess milk.

Answer»

Statements: The Cabinet of State X took certain steps to tackle the milk glut in the state as the cooperatives and government dairies failed to use the available milk. - A news report.

Conclusions:

I. The milk production of State X is more than its need.

II. The Government and co-operative dairies in State X are not equipped in terms of resources and technology to handle such excess milk.


40.

What is the difference between enthalpy of formation and lattice energy?

Answer» What is the difference between enthalpy of formation and lattice energy?
41.

Which of the following statements are examples of “the logic of geography”?(i) There are cities where there are rivers.(ii) Cities appear as they are not from six miles above the ground.(iii) It is easy to understand why valleys are populated.(iv) It is difficult to understand why humans hate and kill one another.(v) The earth is round,and it has more sea than land.

Answer»

Which of the following statements are examples of “the logic of geography”?

(i) There are cities where there are rivers.

(ii) Cities appear as they are not from six miles above the ground.

(iii) It is easy to understand why valleys are populated.

(iv) It is difficult to understand why humans hate and kill one another.

(v) The earth is round,and it has more sea than land.

42.

Identify the safety device from the following images:

Answer»

Identify the safety device from the following images:

43.

___ refers to the source of energy, which are in use from long time and can be stored.

Answer» ___ refers to the source of energy, which are in use from long time and can be stored.
44.

What is forest conservation act

Answer» What is forest conservation act
45.

There are two types of fertilisers F1 and F2. F1 consists of 10% nitrogen and 6% phosphoric acid, F2 consists of 5% nitrogen and 10% phosphoric acid. After testing the soil conditions, a farmer finds that she needs at least 14 kg of nitrogen and 14 kg of phosphoric acid for her crop. If F1 costs Rs 6/kg and F2 costs Rs 5/kg, then the minimum cost of mixture which will produce the required nutrients is

Answer» There are two types of fertilisers F1 and F2. F1 consists of 10% nitrogen and 6% phosphoric acid, F2 consists of 5% nitrogen and 10% phosphoric acid. After testing the soil conditions, a farmer finds that she needs at least 14 kg of nitrogen and 14 kg of phosphoric acid for her crop. If F1 costs Rs 6/kg and F2 costs Rs 5/kg, then the minimum cost of mixture which will produce the required nutrients is
46.

Give some effects of global warming.

Answer» Give some effects of global warming.
47.

Biogas is formed by the action of ___ on the domestic waste in the absence of oxygen.

Answer»

Biogas is formed by the action of ___ on the domestic waste in the absence of oxygen.



48.

Which among the following represents correct sequential order w.r.t. levels of ecological organisation?Options: 1)Organisms -> population -> biological community- > ecosystem-> landscape-> biome -> biosphere 2)Organisms -> landscape -> ecosystem -> biosphere 3)Organisms -> ecosystem -> community -> biome - > biosphere 4)Organisms -> population -> landscape -> ecosystem -> community -> biome biosphere

Answer» Which among the following represents correct sequential order w.r.t. levels of ecological organisation?
Options:
1)Organisms -> population -> biological community- > ecosystem-> landscape-> biome -> biosphere
2)Organisms -> landscape -> ecosystem -> biosphere
3)Organisms -> ecosystem -> community -> biome - > biosphere
4)Organisms -> population -> landscape -> ecosystem -> community -> biome biosphere
49.

आप अपने पारिवारिक रिश्तों-संबंधों के बारे में एक निबंध लिखिए।

Answer» आप अपने पारिवारिक रिश्तों-संबंधों के बारे में एक निबंध लिखिए।
50.

"माँ खिलखिलाकर हँस दीं।" इस वाक्य में 'खिलखिलाकर' शब्द बता रहा है कि माँ कैसे हँसी थीं। इसी प्रकार नीचे दिए गए रेखांकित शब्दों पर भी ध्यान दो। इन शब्दों से एक-एक वाक्य बनाओ। (क) पिताजी ने झिड़ककर कहा, "तू खड़ा क्या देख रहा है?" (ख) "आज दरवाज़े बंद रखो," उन्होंने हुक्म दिया। (ग) "देखो जी, चिड़ियों को मत निकालो," माँ ने अबकी बार गंभीरता से कहा। (घ) "किसी को सचमुच बाहर निकालना हो, तो उसका घर तोड़ देना चाहिए," उन्होंने गुस्से में कहा। तुम इनसे मिलते-जुलते कुछ और शब्द सोचो और उनका प्रयोग करते हुए कुछ वाक्य बनाओ। संकेत –धीरे से, ज़ोर से, अटकते हुए, हकलाते हुए, फुसफुसाते हुए आदि।

Answer»

"माँ खिलखिलाकर हँस दीं।" इस वाक्य में 'खिलखिलाकर' शब्द बता रहा है कि माँ कैसे हँसी थीं। इसी प्रकार नीचे दिए गए रेखांकित शब्दों पर भी ध्यान दो। इन शब्दों से एक-एक वाक्य बनाओ।


(क) पिताजी ने झिड़ककर कहा, "तू खड़ा क्या देख रहा है?"


(ख) "आज दरवाज़े बंद रखो," उन्होंने हुक्म दिया।


(ग) "देखो जी, चिड़ियों को मत निकालो," माँ ने अबकी बार गंभीरता से कहा।


(घ) "किसी को सचमुच बाहर निकालना हो, तो उसका घर तोड़ देना चाहिए," उन्होंने गुस्से में कहा।


तुम इनसे मिलते-जुलते कुछ और शब्द सोचो और उनका प्रयोग करते हुए कुछ वाक्य बनाओ।


संकेत –धीरे से, ज़ोर से, अटकते हुए, हकलाते हुए, फुसफुसाते हुए आदि।