According to law of conservation of mass,

Mass of reactants = Mass of products.

AgNO3 + NaCl = AgCl + NaNO3

xg 5.85g = 14.35g 8.5g

x 5.85 = 14.35 8.5

x. = 17.0g a n s w e r

According to law of conservation of mass,

Mass of reactants = Mass of products.

AgNO3 + NaCl = AgCl + NaNO3

xg 5.85g = 14.35g 8.5g

x 5.85 = 14.35 8.5

x. = 17.0g answer

Square root of a number is a value, which on multiplied by itself gives the original number.  Suppose, x is the square root of y, then it is represented as x=√y or we can express the same equation as x² = y. Here, ’√’   is the radical symbol used to represent the root of numbers. The positive number, when multiplied by itself, represents the square of the number. The square root of the square of a positive number gives the original number.

 पहलवान की ढोलक, कहानी फणीश्वर नाथ रेणु  जी द्वारा लिखी गयी प्रसिद्ध कहानी है .इस कहानी में लेखक ने अपने गाँव अंचल एवं संस्कृति को सजीव कर दिया है .ऐसा लगता है कि मानों हरेक पात्र वास्तविक जीवन जी रहा है . कहानी के प्रारंभ पहलवान की ढोलक के बजने से होती है .गाँव में महामारी फैली हुई है .रात में वातावरण में शान्ति है .कभी - कभी झोपड़ी से कराहने व के करने कि आवाज तथा कभी कभी बच्चों के रोने की आवाज आती थी .ऐसे समय पहलवान की ढोलक संध्या से प्रातःकाल तक एक ही गति से बजती रहती थी .यही आवाज मृत गाँव में संजीवनी शक्ति रहती थी . 

पहलवान के जीवन के बारे में फणीश्वर नाथ रेणु जी  ने बताया है कि नौ बर्ष कि आयु में ही पहलवान  के माता - पिता की मृत्यु हो गयी और उसका पालन पोषण उसकी विधवा सास द्वारा किया गया .सास पर हुए अत्याचारों को देखकर लुट्टन को बदला लेने के लिए अपने शरीर को मज़बूत बनाना शुरू कर दिया .वह गाँव में पहलवानी करने लगा .एक वह श्यामनगर के दंगल में दंगल देखने गया था .वह उसने ढोलक की आवाज को अपना गुरु मानकर शेर के बच्चे चाँद सिंह नाम के पहलवान को हराया .उसके बाद राजा ने उसे राज - पहलवान घोषित कर दिया .अब उसका पालन - पोषण राजदरबार से होने लगा .फिर उसने काले खां जैसे प्रसिद्ध पहलवान को हरा कर अपने को अजेय पहलवान घोषित कर दिया .इस प्रकार पंद्रह वर्ष बीत गए .लुट्टन अजेय बना रहा .अपने बेटों को पहलवानी की शिक्षा देने लगा .वह अपने बेटों को ढोलक के प्रताप से अजेय बनने की शिक्षा देता रहा .लेकिन राजा की मृत्यु के बाद राजकुमार विलायत से आने के बाद पहलवान के खर्चों को देखकर उसे दरबार से हटा दिया गया .विवश होकर वह अपने गाँव लौट गया .गाँव आकर वह और उसे बेटे ग्रामीण बच्चों को कुश्ती सिखाने लगा ,लेकिन ग्रामीणों में अरुचि के कारण ,पहलवान के बेटे मजदूरी करने लगे .लेकिन अकस्मात् सूखा और महामारी के कारण एक एक करके लोग मरने लगे .इस प्रकार उनके दोनों बेटे महामारी के चपेट में आ गए .वह उन्हें उठाकर नदी में बहा आया .पुत्रों  के मृत्यु  के बाद भी वह ढोलक बजाता रहा .तो लोगों के हिम्मत बढ़ी .चार पाँच दिन बाद ढोलक बजनी बंद हो गयी .सुबह लोगों ने देखा कि पहलवान की लाश चित्त पड़ी है .एक शिष्य ने कहा कि गुरु ने कहा था उसकी मौत के बाद उसके शरीर को चिता पर पेट के बल लिटाया जाए क्योंकि वह कभी चित्त नहीं हुआ और चिता सुलगाने के समय ढोल बजाते रहना .इस प्रकार पहलवान  के अंत के साथ कहानी का अंत हो जाता है .

Home science is the science of a home and it includes all the things that concern the person, home, family members and resources. Home science courses nowadays offer Dietitian and Nutrition subjects, Resource Management, Fashion or Textile Designing, Communication and Development, Psychology and child development.

A computer is an electronic device that operates according to the instructions stored in its memory. Computers are used in various fields in our daily life. Computers have taken industries and businesses to a whole new level. Some of the application areas of the computer include education, entertainment and science and engineering.
 

A n s w e r

Reaction of an alcohol with a carboxylic acid in presence of an acid to produce an ester is known as esterification reaction.

Reaction:

A process which under some conditions may take place by itself or by initiation independent of the rate is called spontaneous process.

A process which can take place by itself or has an urge or tendency to take place is called spontaneous process.

A spontaneous process is simply a process which is feasible.

The rate of the process may vary from extremely slow to extremely fast.

Examples of processes which take place by themselves :

1) Dissolution of common salt in water

2) Evaporation of water in an open vessel

A process which can neither take place by itself nor by initiation is called a non spontaneous process.

For Example

1) Flow of water up a hill

2) Flow of heat from cold body to a hot body

3) Diffusion of gas from low pressure to a high pressure

4) Dissolution of sand in water

A n s w e r
There are three main regions of commercial dairy farming:

1. The largest is North-Western Europe.
2. Second is Canada.
3. The third belt includes South Eastern Australia, New Zealand and Tasmania.

There are many reasons that are being put forward by scholars regarding the decline of the Harappan civilization,

1. climatic change, deforestation, excessive floods, the shifting and/or drying up of rivers, to overuse of the landscape. Although some of these “causes” may hold for certain settlements, but they do not explain the collapse of the entire civilisation.

2. Invasion of Aryans- It is believed by some scholars that invasion of aryan lead to the decline of Harappan civilization however this hypothesis has been refuted.

3. End of an unifying element- It is believed that a strong unifying element perhaps came to an end because we see disappearance of seals, scripts, weight etc.

Pleura is a structure that covers up the lungs. It has two layers which is been separated by the pleura cavity. Pleura cavity is also called a pleura space, which is mainly the thin and fluid-filled space present between the two pulmonary pleura. Mainly the visceral pleura receives all its blood supply from the bronchial circulation, which is also a supplier of the lungs. The visceral pleura which is responsible for covering the lungs receives the innervations from the autonomic nervous system.

No, the size of the hole in the Ozone Layer has not been changed in recent year

Formation and depletion of the ozone is  a natural process and we can not control it.

What all we can do is to reduce the uses of CFC which are responsible for ozone hole.The problem is that the Cl radical which is released from CFC is responsible for the hole and while doing so this radicle is not consumed during the reaction and gets regenerated. In this way one Cl radical can destroy millions of ozone molecule. There are already a large amount of Cl radicals  in the stratosphere which are causing regular damage to the ozone layer and hence the ozone hole is not reducing even after putting so much regulations on uses of CFC.

No, the size of the hole in the Ozone Layer has not been changed in recent year

Formation and depletion of the ozone is  a natural process and we can not control it.

What all we can do is to reduce the uses of CFC which are responsible for ozone hole.The problem is that the Cl radical which is released from CFC is responsible for the hole and while doing so this radicle is not consumed during the reaction and gets regenerated. In this way one Cl radical can destroy millions of ozone molecule. There are already a large amount of Cl radicals  in the stratosphere which are causing regular damage to the ozone layer and hence the ozone hole is not reducing even after putting so much regulations on uses of CFC.

The two main characteristics of PPC are:

1. Slopes downwards to the right: PPC slopes downwards from left to right. It is because in a situation of fuller utilisation of the given resources, production of both the goods cannot be increased simultaneously. More of commodity A can be produced only with less production of commodity B.
2. Concave to the point of origin: It is because to produce each additional unit of commodity A, more and more units of commodity B will have to be sacrificed. Opportunity cost of producing every additional unit of commodity A tends to increase in terms of the loss of production of commodity B. Production will act upon the law of increasing marginal opportunity cost.

A n s w e r ;
The different types of objects used as money before the introduction of coins are as follows:
1. Grains
2. Cattle
3. Shoes
4. Utensil
5. Food items
6. Clothes

Literal meaning

Physical = related to body
education = knowledge

Thus,

Physical Education is knowledge about the body. In this subject, we read about various activities which are necessary for development and growth of the body.

There are so many definitions about Physical education given by various experts.

According to Oberteuffer, <i>Physical Education is the sum of those experiences which comes to individual through movements.</i>

According to J.B.Nash, <i>Physical Education is that phase of the whole field of the education that deals with big muscle activities and their related responses.</i>

According to H.C. Buck, <i>Physical education is the part of general education programme, which is considered wit growth, development and education of children through the medium of big muscle activities. Physical activities are the tools. They are so selected and conducted as to influence every child's life physically, mentally, emotionally and morally.</i>

According to Charles A Bucher, <i>Physical education is an integral part of the total educational process and has as its aim the development physically, mentally, emotionally, and socially fit citizens through the medium of physical activities which have been selected with a view to realizing these outcomes.</i>

According to C.C.Cowell, <i>Physical education is the social process of change in the behavior of the human organism, originating primarily from the stimulus of social big-muscle play and related activities.</i>

According to American Association for Health, Physical Education and Recreation (AAHPER),
<i>Physical education is a way of education through physical activities which are selected and carried on with full regard to values in human growth, development, and behavior.</i>

It is true that a real friend is one who helps you in need. In the story, Sue and Johnsy were good friends and artists. Sue was always with Johnsy who was suffering from pneumonia and had lost her will to live. Johnsy believed that she would die with the falling of the last leaf on the ivy creeper. Sue tried to instil in her a desire to live a happy life. She was optimistic and always remained a constant companion to Johnsy. Sue shared it with Behrman and both of them helped Johnsy in regaining her wish to live in their own ways. Sue proves that a true friend is one who we can turn to in our times of trouble. He/She never disappoints us. Thus, the story “The Last Leaf” supports the given statement.

Yes, I do agree that The Last Leaf is a story of supreme sacrifice by an old artist. Behrman always wished to draw a masterpiece-which he did draw! In the process, he saved a precious young life also-even though he lost his life.