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151.

Question 11 (iii)State whether the following statements are True/False.Tremors on the earth can also be caused by the eruption of a volcano.

Answer»

Question 11 (iii)



State whether the following statements are True/False.

Tremors on the earth can also be caused by the eruption of a volcano.



152.

What is air pollution? Name some of the causes for air pollution.

Answer» What is air pollution? Name some of the causes for air pollution.
153.

What is wrong in the given sequence? The grey gloomy looming clouds

Answer»

What is wrong in the given sequence?

The grey gloomy looming clouds


154.

What are the different types of minerals?

Answer» What are the different types of minerals?
155.

• मैं काली हूँ। मीठा गाना गाती हूँ। ................ • मैं हरा हूँ। लाला मेरी चोंच है। हरी मिर्च खाता हूँ। ................. • सूप जैसे कान हैं। मोटे-मोटे पाँव हैं, लंबे-लंबे दाँत हैं। ................. • सिर पर ताज है। दुम पर पैसा है। बादल देखकर नाचता हूँ। ................. • घरों में आता हूँ। सारी चीज़ें कुतर जाता हूँ। .................

Answer»

























मैं काली हूँ। मीठा गाना गाती हूँ।



................



मैं हरा हूँ। लाला मेरी चोंच है। हरी मिर्च खाता हूँ।



.................



सूप जैसे कान हैं। मोटे-मोटे पाँव हैं, लंबे-लंबे दाँत हैं।



.................



सिर पर ताज है। दुम पर पैसा है। बादल देखकर नाचता हूँ।



.................



घरों में आता हूँ। सारी चीज़ें कुतर जाता हूँ।



.................




156.

Explain if metals truly lose their lustre with time.

Answer» Explain if metals truly lose their lustre with time.
157.

Answer the following questions.(a) What is meant by ‘disasters’?(b) What are the types of disasters?(c) What is meant by ‘disaster management’?(d) Which are the main components of disaster management?

Answer» Answer the following questions.

(a) What is meant by ‘disasters’?

(b) What are the types of disasters?

(c) What is meant by ‘disaster management’?

(d) Which are the main components of disaster management?
158.

Bangaluru in Karnataka is referred to as the Silicon Valley of India, as it is the hub of IT-based industries. Which factor has helped Bengaluru achieve this status?

Answer»

Bangaluru in Karnataka is referred to as the Silicon Valley of India, as it is the hub of IT-based industries. Which factor has helped Bengaluru achieve this status?

159.

Wolverine is mascot of which country?

Answer»

Wolverine is mascot of which country?


160.

20.Variation of screening effect across the period and down the group and the cause producing this variation

Answer» 20.Variation of screening effect across the period and down the group and the cause producing this variation
161.

500 men took dip in a tank which is 80 m long, 50 m broad. What is the rise in water level if the average displacement of water by a man is 4 m³.

Answer» 500 men took dip in a tank which is 80 m long, 50 m broad. What is the rise in water level if the average displacement of water by a man is 4 m³.
162.

'यासुकी-चान के लिए पेड़ पर चढ़ने का यह..........अंतिम मौका था।'-इस अधूरे वाक्य को पूरा कीजिए और लिखकर बताइए कि लेखिका ने ऐसा क्यों लिखा होगा?

Answer»

'यासुकी-चान के लिए पेड़ पर चढ़ने का यह..........अंतिम मौका था।'-इस अधूरे वाक्य को पूरा कीजिए और लिखकर बताइए कि लेखिका ने ऐसा क्यों लिखा होगा?

163.

कुछ पुरातन पंथी लोग स्त्रियों की शिक्षा के विरोधी थे। द्विवेदी जी ने क्या-क्या तर्क देकर स्त्री-शिक्षा का समर्थन किया?

Answer»

कुछ
पुरातन
पंथी
लोग
स्त्रियों
की
शिक्षा
के
विरोधी
थे।
द्विवेदी
जी
ने
क्या
-क्या
तर्क
देकर
स्त्री
-शिक्षा
का
समर्थन
किया
?

164.

Apart from jewellery, Silver is commonly used in

Answer»

Apart from jewellery, Silver is commonly used in


165.

Question 20Major source of mineral in soil is the:(a) parent rock from which soil is formed(b) plants(c) animals(d) bacteria

Answer»

Question 20

Major source of mineral in soil is the:




(a) parent rock from which soil is formed

(b) plants

(c) animals

(d) bacteria



166.

What is a sprinkler irrigation system? What are its advantages?

Answer» What is a sprinkler irrigation system? What are its advantages?
167.

Answer the following questions.(i)Which are the two main climatic factors responsible for soil formation?(ii)Write any two reasons for land degradation today.(iii)Why is land considered an important resource?(iv)Name any two steps that government has taken to conserve plants and animals.(v)Suggest three ways to conserve water.

Answer»

Answer the following questions.

(i)Which are the two main climatic factors responsible for soil formation?

(ii)Write any two reasons for land degradation today.

(iii)Why is land considered an important resource?

(iv)Name any two steps that government has taken to conserve plants and animals.

(v)Suggest three ways to conserve water.

168.

Find three or four phrases in stanzas one and two which are likely to occur in a geography lesson.

Answer»

Find three or four
phrases in stanzas one and two which are likely to occur in a
geography lesson.

169.

Describe certain sources of environmental and indoor noise pollution.

Answer» Describe certain sources of environmental and indoor noise pollution.


170.

Question 1:Name the property of metals that explains- Ringing of the bell. Making of Jewellery from Gold. Electrical wires.

Answer»

Question 1:



Name the property of metals that explains-





  1. Ringing of the bell.




  2. Making of Jewellery from Gold.




  3. Electrical wires.





171.

What is pisciculture ?

Answer» What is pisciculture ?


172.

State two uses of wood charcoal, sugar charcoal and bone charcoal each.

Answer» State two uses of wood charcoal, sugar charcoal and bone charcoal each.
173.

Which of the following products we do not get from forests?

Answer»

Which of the following products we do not get from forests?


174.

List five products we get from forests.

Answer» List five products we get from forests.
175.

Name five trees that grow in the wild (without being deliberately planted).

Answer»

Name five trees that grow in the wild (without being deliberately planted).

176.

Question 20List three sources of noise pollution in your locality.

Answer» Question 20

List three sources of noise pollution in your locality.
177.

List the effects of landslides.

Answer» List the effects of landslides.
178.

State whether the given statements are true or false. If true, write the reasons. (i) Ganga−Brahmaputra plain of India is an overpopulated region. (ii) Water availability per person in India is declining. (iii) Rows of trees planted in the coastal areas to check the wind movement is called intercropping. (iv) Human interference and changes of climate can maintain the ecosystem.

Answer»

State
whether the given statements are true or false. If true, write the
reasons.


(i)
Ganga−Brahmaputra plain of India is
an overpopulated region.



(ii)
Water availability per person in India is
declining.



(iii)
Rows of trees planted in the coastal areas
to check the wind movement is called intercropping.



(iv) Human
interference and changes of climate can maintain the ecosystem.

179.

What kind of water arrangements were made for travelers in ancient time?

Answer» What kind of water arrangements were made for travelers in ancient time?
180.

Q 14/30 10% sites of catalyst bed have adsorbed H2. On heating H2gas is evolved from sites and collected at 0.03 atm and 300 K in asmall vessel of 2.46 cm3. Number of sites available is 7.2 x 1016cm2 and surface area is 1000 cm2. The number of surface sitesoccupied per molecule of H2 is \lbrack Given: NA 6 x 1023\rbrack per

Answer» Q 14/30 10% sites of catalyst bed have adsorbed H2. On heating H2gas is evolved from sites and collected at 0.03 atm and 300 K in asmall vessel of 2.46 cm3. Number of sites available is 7.2 x 1016cm2 and surface area is 1000 cm2. The number of surface sitesoccupied per molecule of H2 is \lbrack Given: NA 6 x 1023\rbrack per
181.

The density of crystallime sodium chloride is 5.85 g/cm^3.What is the edge length of the unit cell

Answer» The density of crystallime sodium chloride is 5.85 g/cm^3.What is the edge length of the unit cell
182.

what is acid rain and ozone?

Answer» what is acid rain and ozone?
183.

Complete the sentences below using some of the following words. sparsely, favourable, fallow, artificial, fertile, natural, extreme, densely When people are attracted to an area it becomes ___________ populated. Factors that influence this include _________ climate; good supplies of ____________ resources and _____________ land.

Answer»

Complete
the sentences below using some of the following words.



sparsely,
favourable,
fallow,
artificial,
fertile,
natural,
extreme,
densely



When
people are attracted to an area it becomes ___________ populated.
Factors that influence this include _________ climate; good supplies
of ____________ resources and _____________ land.

184.

Stephen requested Aristotle to teach students more about climate changeso that students can relate it with the daily environment. This climate change refers to -

Answer»

Stephen requested Aristotle to teach students more about climate changeso that students can relate it with the daily environment. This climate change refers to -


185.

The method of irrigation in which water is transported through narrow pipes to one or more central locations:

Answer»

The method of irrigation in which water is transported through narrow pipes to one or more central locations:


186.

State some measures of controlling air pollution at source.

Answer» State some measures of controlling air pollution at source.
187.

किसी भी क्रिया को संपन्न अथवा पूरा करने में जो भी संज्ञा आदि शब्द संलग्न होते हैं, वे अपनी अलग-अलग भूमिकाओं के अनुसार अलग-अलग कारकों में वाक्य में दिखाई पड़ते हैं; जैसे-“ वह हाथों से शिकार को जकड़ लेती थी।”जकड़ना क्रिया तभी संपन्न हो पाएगी जब कोई व्यक्ति (वह) जकड़नेवाला हो, कोई वस्तु (शिकार) हो जिसे जकड़ा जाए। इन भूमिकाओं की प्रकृति अलग-अलग है। व्याकरण में ये भूमिकाएँ कारकों के अलग-अलग भेदों;जैसे- कर्ता, कर्म, करण आदि से स्पष्ट होती हैं।अपनी पाठ्यपुस्तक से इस प्रकार के पाँच और उदाहरण खोजकर लिखिए और उन्हें भलीभाँति परिभाषित कीजिए।

Answer»

किसी भी क्रिया को संपन्न अथवा पूरा करने में जो भी संज्ञा आदि शब्द संलग्न होते हैं, वे अपनी अलग-अलग भूमिकाओं के अनुसार अलग-अलग कारकों में वाक्य में दिखाई पड़ते हैं; जैसे-“ वह हाथों से शिकार को जकड़ लेती थी।


जकड़ना क्रिया तभी संपन्न हो पाएगी जब कोई व्यक्ति (वह) जकड़नेवाला हो, कोई वस्तु (शिकार) हो जिसे जकड़ा जाए। इन भूमिकाओं की प्रकृति अलग-अलग है। व्याकरण में ये भूमिकाएँ कारकों के अलग-अलग भेदों;


जैसे- कर्ता, कर्म, करण आदि से स्पष्ट होती हैं।


अपनी पाठ्यपुस्तक से इस प्रकार के पाँच और उदाहरण खोजकर लिखिए और उन्हें भलीभाँति परिभाषित कीजिए।

188.

After walking some distance on a hot summer day, why do we prefer to go into the shade?

Answer» After walking some distance on a hot summer day, why do we prefer to go into the shade?
189.

How charcoal is formed?

Answer» How charcoal is formed?
190.

पाठ में आए लोकभाषा के इन संवादों को समझ कर इन्हें खड़ी बोली हिंदी में ढाल कर प्रस्तुत कीजिए।(क) ई कउन बड़ी बात आय। रोटी बनाय जानित है, दाल राँघ लेइत है, साग-भाजी छँउक सकित है, आउर बाकी का रहा।(ख) हमारे मालकिन तौ रात-दिन कितबयिन माँ गड़ी रहती हैं। अब हमहूँ पढ़ै लागब तो घर-गिरिस्ती कउन देखी-सुनी।(ग) ऊ बिचारअउ तौ रात-दिन काम माँ जुकी रहती हैं, अउर तुम पचै घमती-फिरती हौ, चलौ तनिक हाथ बटाय लेउ।(घ) तब ऊ कुच्छौ करिहैं-धरिहैं ना-बस गली-गली गाउत-बजाउत फिरिहैं।(ङ) तुम पचै का का बताईययहै पचास बरिस से संग रहित हैं।(च) हम कुकुरी बिलारी न होयँ, हमार मन पुसाई तौ हम दूसरा के जाब नाहिं त तुम्हार पचै की छाती पै होरहा भूँजब और राज करब, समुझे रहौ।

Answer»
पाठ में आए लोकभाषा के इन संवादों को समझ कर इन्हें खड़ी बोली हिंदी में ढाल कर प्रस्तुत कीजिए।



(क) ई कउन बड़ी बात आय। रोटी बनाय जानित है, दाल राँघ लेइत है, साग-भाजी छँउक सकित है, आउर बाकी का रहा।



(ख) हमारे मालकिन तौ रात-दिन कितबयिन माँ गड़ी रहती हैं। अब हमहूँ पढ़ै लागब तो घर-गिरिस्ती कउन देखी-सुनी।



(ग) ऊ बिचारअउ तौ रात-दिन काम माँ जुकी रहती हैं, अउर तुम पचै घमती-फिरती हौ, चलौ तनिक हाथ बटाय लेउ।



(घ) तब ऊ कुच्छौ करिहैं-धरिहैं ना-बस गली-गली गाउत-बजाउत फिरिहैं।



(ङ) तुम पचै का का बताईययहै पचास बरिस से संग रहित हैं।



(च) हम कुकुरी बिलारी न होयँ, हमार मन पुसाई तौ हम दूसरा के जाब नाहिं त तुम्हार पचै की छाती पै होरहा भूँजब और राज करब, समुझे रहौ।
191.

___ is used to create artificial rains.

Answer»

___ is used to create artificial rains.


192.

Why does water in earthen pots during summer season????

Answer»

Why does water in earthen pots during summer season????

193.

What are the following animals called based on their food habits?

Answer»

What are the following animals called based on their food habits?

194.

50. How to find out equivalent weight of CaCO3, CaO and CO2 in the rxn CaCO3 = CaO + CO2 ? I'm not getting the n-factor part.

Answer» 50. How to find out equivalent weight of CaCO3, CaO and CO2 in the rxn CaCO3 = CaO + CO2 ? I'm not getting the n-factor part.
195.

The invention of which of the following led to the development of transport?

Answer»

The invention of which of the following led to the development of transport?


196.

The correct order of melting point is: (a) BeO > CaO > MgO (b) MgO > CaO > BeO (c) CaO > MgO > BeO (d) BeO > MgO > CaO

Answer» The correct order of melting point is: (a) BeO > CaO > MgO (b) MgO > CaO > BeO (c) CaO > MgO > BeO (d) BeO > MgO > CaO
197.

Difference Between the air pressure on the ground and Air pressure on the top of Himalayas.

Answer»

Difference Between the air pressure on the ground and Air pressure on the top of Himalayas.

198.

Explain how clouds are formed.

Answer» Explain how clouds are formed.
199.

Explain why a fountain pen leaks in aeroplane at high a altitude.

Answer»

Explain why a fountain pen leaks in aeroplane at high a altitude.

200.

Which type of minnig is least harmful to earth?

Answer»

Which type of minnig is least harmful to earth?