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  • 2 answers

Kiran Kumari 5 years, 3 months ago

There are seven periods in modern periodic table. As we move from left to right in a period valecy increases from 1 to 4 and then decreases to 0. When we move from left to right in a period metallic character of elements decreases and non- metallic character started to increase. As we go down in a group valecy of element remain same and atomic size start increase

Yogita Ingle 5 years, 3 months ago

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The modern periodic table has seven periods.

On moving from left to right in the periodic table, the metallic character of elements decreases, while the valency first increases from 1 to 4 and then decreases to 0 (zero). On moving down the group, the atomic size of the elements increases, but the valency remains the same.

  • 2 answers

Yogita Ingle 5 years, 3 months ago

  • The Balkan region comprised modern-day Romania, Bulgaria, Albania, Greece,Macedonia,Croatia, Bosnia-Herzegovina, Slovenia, Serbia and Montenegro, and its inhabitants were broadly called Slavs.
  • With a large area of Balkan region under the Ottoman Empire, the spread of the ideas of romantic nationalism in the Balkans together with the breaking up of the Ottoman Empire made the situation even more serious.
  •  The Ottoman Empire had not been able to become strong even after reforms and modern methods after an effort of nearly 91.00 years. Gradually, most of the European subject nationalities broke away from the Ottoman Empire’s control to declare themselves independent.
  •  The claim for independence and political rights by the Balkan people was based on nationality. They gave examples of history to prove that they had once been independent but had subsequently been subjugated by foreign powers.
  •  Thus the rebellious nationalities in the Balkans thought of their struggles as attempts to win back their long lost independence.
  •  Soon various Slavic nationalities were struggling to define their identity and independence making Balkans region one having intense conflict.
  • The internal rivalries and jealousies made the Balkan states distrust and fear each other.
  • As the Balkans had become site for big power fights, the situation became even more serious. The fights were among the European powers who fought for trade and colonies and for naval and military powers.
  • Russia, Germany, England and Austria-Hungary wanted to gain control of the Balkan region causing many wars which culminated in the First World War.

Lakshay Chhillar 5 years, 3 months ago

Balkan region was a source of tension because of the following reasons: (1) It was a region of geographical, ethnic variation comprising Romania, Bulgaria, etc:and its inhabitants were broadly known as Slavs. (2) Large part of Balkans was under the Ottoman Empire and the disintegration of which created an explosive situation. One by one its European subject nationalities broke away from its control and declared independence. (3) Balkan peoples based their claims for independence or political rights on nationality and used history to prove that they were independent but subsequently subjugated. (4) The Balkan states were fiercely jealous of each other & hoped to gain territory. (5) Matters complicated because of intense rivalry among European powers over Trade & colonies as well as naval and military might. This led to a series of wars in the region and finally the first world war. (6) Spread of the ideas of romantic nationalism.
  • 5 answers

Kunwar Dev Singh 5 years, 3 months ago

4 unit

Yogita Ingle 5 years, 3 months ago

When we are asked to calculate the distance between a point and any of the axes, we calculate the perpendicular distance between them.

Therefore, the point (-3,-4) is 3 units away from the y-axis and 4 units from the x-axis. This is because in case of either axes the co-ordinate of the other axis is zero.

Therefore the distance between the point P(-3,-4) and x-axis is 4 units.

Divanshu Rawat 5 years, 3 months ago

For x axis our point x2=-3 & y2=0 D=√[-3-(-3)]^2. + [0-(-4)]^2 =√(0)^2. + (4)^2 =√16 D=4 unit

Ansh Sharma 5 years, 3 months ago

For x axis our point x2=-3 & y2=0 D=√[-3-(-3)]^2. + [0-(-4)]^2 =√(0)^2. + (4)^2 =√16 D=4 unit

Ishan Kumar 5 years, 3 months ago

4
  • 1 answers

Sunita Devi 5 years, 3 months ago

Hi
  • 2 answers

Piyush Kumar 5 years, 1 month ago

Means

Harsh Jinwal Jinwal 5 years, 1 month ago

Cimnication skill
  • 2 answers

Secret ??? 5 years, 3 months ago

Why

Ansh Sharma 5 years, 3 months ago

Desôle , I don't think so.
  • 2 answers

Malaika Sharma 5 years, 2 months ago

?Famers' protest. ?Impact of lockdown on the environment. ?Online classes. ?Craze of fashion among teenagers. ?Its better to be alone than in bad company.

Ujjawal Mittal 5 years, 3 months ago

My experience in lockdown
  • 5 answers

Gourav Yadav 5 years, 3 months ago

Hi

Gourav Yadav 5 years, 3 months ago

Fbgne

Tanu Choudhary # 5 years, 3 months ago

Hi yogita thanks for your solution I have miscalculated the value of x and m

Tanu Choudhary # 5 years, 3 months ago

By using elimination method we can easily get y=5, x=1/3, m=6

Yogita Ingle 5 years, 3 months ago

Given equations are 

2x+3y=11−−−−(1)

2x−4y=−24−−−−(2)

Form (1)

2x+3y=11 

⇒2x=11−3y

⇒x=211−3y​−−−(3)

substituting  x in(2)

2x−4y=−24 

⇒2(211−3y​)−4y=−24

⇒11−3y−4y=−24

⇒11−7y=−24

⇒7y=35

⇒y=35/7

⇒y=5.

putting  y = 5 in (3) 

x=[11−3(5)​]/2

⇒x=[11−15​]/2

⇒x=−4/2

∴x=−2.

Hence x = -2 and y = 5 is the solution of the 

equation.

Now, we have to find m

y=mx+3                                  ∴m=−1

5=3(−2)+3

5−3=−2m⇒−2m=2

⇒m=−2/x=−1

  • 4 answers

Krazy Girl 5 years, 2 months ago

Nothing

Baisa Hkm ?? 5 years, 3 months ago

Ask your question

Malaika Sharma 5 years, 3 months ago

What's your question???

Sumesh ☺️☺️☺️ 5 years, 3 months ago

What
  • 1 answers

Sia ? 4 years, 9 months ago

Please ask question with complete information.

  • 2 answers

Srikar B 5 years, 3 months ago

RESISTOR 1. It is the property of a conductor to resist the flow of electric current 2.R=V/I 3.It is denoted with ohm RHEOSTAT 1. A component used to change the current with out changing the source of voltage is rheostat 2.It is a device change the resistance of a conductor

Yogita Ingle 5 years, 3 months ago

Sl. No. Differentiating Property Resistance Resistivity
1 Definition Resistance is the physical property of a substance because of which it opposes the flow of current i.e. electrons. Resistivity is the physical property of a particular substance which is having particular dimensions.
2 Proportionality Resistance is directly proportional to the length and temperature while it is inversely proportional to the cross-sectional area of the material. Resistivity is only proportional to the nature and temperature of the particular material.
3 Symbol R ρ
4 Formula R = V/I or,
R = ρ(L/A)V = Voltage, I = Current, ρ = Resistivity
ρ = (R×A)/L

 

 

R = Resistance, L= Length, A = Cross-sectional area

5 SI Units The SI unit of resistance is Ohms The SI unit of resistivity is Ohms-meter.
6 Applications The property of resistance is used in several places like heaters, fuses, sensors, etc. Electrical resistivity measurement is used as a quality control test for calcareous soil.
  • 1 answers

Kiran Kumari 5 years, 3 months ago

A=root 7 D=root 7 Hence the next A.p is root 112
  • 1 answers

Yashika B. 5 years, 3 months ago

गणित में उनका मुख्य योगदान मुख्य रूप से विश्लेषण, खेल सिद्धांत और अनंत श्रृंखला में है। उन्होंने गेम थ्योरी की प्रगति के लिए प्रेरणा देने वाले नए और उपन्यास विचारों को प्रकाश में लाकर विभिन्न गणितीय समस्याओं को हल करने के लिए गहराई से विश्लेषण किया। ऐसी उनकी गणितीय प्रतिभा थी कि उन्होंने अपने स्वयं के प्रमेयों की खोज की। इस श्रृंखला ने आज उपयोग किए जाने वाले कुछ एल्गोरिदम का आधार बनाया है। ऐसा ही एक उल्लेखनीय उदाहरण है जब उन्होंने अपने रूममेट की द्विभाजित समस्या को एक ऐसे उपन्यास के साथ हल कर दिया जिसका उत्तर निरंतर अंश के माध्यम से समस्याओं के पूरे वर्ग को हल करता है। इसके अलावा उन्होंने कुछ पूर्व की अज्ञात पहचान भी बनाईं जैसे कि हाइपरबोलिंडेंट सेक्रेटरी के लिए गुणांक को जोड़ना और पहचान प्रदान करना। रामानुजन को अपनी माता से काफी लगाव था। अपनी माँ से रामानुजन ने प्राचीन परम्पराओ और पुराणों के बारे में सीखा था। उन्होंने बहोत से धार्मिक भजनों को गाना भी सीख लिया था ताकि वे आसानी से मंदिर में कभी-कभी गा सके। ब्राह्मण होने की वजह से ये सब उनके परीवार का ही एक भाग था। कंगयां प्राइमरी स्कूल में, रामानुजन एक होनहार छात्र थे। बस 10 साल की आयु से पहले, नवंबर 1897 में, उन्होंने इंग्लिश, तमिल, भूगोल और गणित की प्राइमरी परीक्षा उत्तीर्ण की और पुरे जिले में उनका पहला स्थान आया। उसी साल, रामानुजन शहर की उच्च माध्यमिक स्कूल में गये जहा पहली बार उन्होंने गणित का अभ्यास कीया। Srinivasa Ramanujan Childhood: 11 वर्ष की आयु से ही श्रीनिवास रामानुजन / Srinivasa Ramanujan अपने ही घर पर किराये से रह रहे दो विद्यार्थियो से गणित का अभ्यास करना शुरू कीया था। बाद में उन्होंने एस.एल. लोनी द्वारा लिखित एडवांस ट्रिग्नोमेट्री का अभ्यास कीया। 13 साल की अल्पायु में ही वे उस किताब के मास्टर बन चुके थे और उन्होंने खुद कई सारे थ्योरम की खोज की। 14 वर्ष की आयु में उन्हें अपने योगदान के लिये मेरिट सर्टिफिकेट भी दिया गया और साथ ही अपनी स्कूल शिक्षा पुरी करने के लिए कई सारे अकादमिक पुरस्कार भी दिए गए और सांभर तंत्र की स्कूल में उन्हें 1200 विद्यार्थी और 35 शिक्षको के साथ प्रवेश दिया गया। गणित की परीक्षा उन्होंने दिए गए समय से आधे समय में ही पूरी कर ली थी। और उनके उत्तरो से ऐसा लग रहा था जैसे ज्योमेट्री और अनंत सीरीज से उनका घरेलु सम्बन्ध हो। रामानुजन ने 1902 में घनाकार समीकरणों को आसानी से हल करने के उपाय भी बताये और बाद में क्वार्टीक (Quartic) को हल करने की अपनी विधि बनाने में लग गए। उसी साल उन्होंने जाना की क्विन्टिक (Quintic) को रेडिकल्स (Radicals) की सहायता से हल नही किया जा सकता।
  • 0 answers
  • 2 answers

Tanuj Sanwal 5 years, 3 months ago

Traffic lights, emotions

Yogita Ingle 5 years, 3 months ago

One of the most common forms of nonverbal communication is facial expressions. Using the eyebrows, mouth, eyes and facial muscles to convey can be very effective when communicating both emotion and information. Example: Someone might raise their eyebrows and open their eyes widely if they feel surprised.

  • 5 answers

Secret ??? 5 years, 3 months ago

No it matters as our 20 marks out of 100 is in the hand of teacher

Sumesh ☺️☺️☺️ 5 years, 3 months ago

I am lavanya

Sumesh ☺️☺️☺️ 5 years, 3 months ago

It's not final exam so don't worry , only focus on your board exam ☺️

Sumesh ☺️☺️☺️ 5 years, 3 months ago

So discusting teacher she is??

Tanu Choudhary # 5 years, 3 months ago

Don't worry complain to the principal or to your parents If nothing will have changed then just focus on your final exam
Hello guys ,i m sumaila ,i read in class 10 , today i m talking about my school problem with you all my frnds of my cbse guide i use this app from last 1 year .........soo let's come to the point ,,,,,,in my school ,,,,,,there is my english teacher ,,she forced (indirectly) me to join her tution .....but i don't want to their tution ,as u all know english is not a tough subject ,,,soo that's why don't want to join their tution ......soo ,at 16 dec 2020 ,,, my english teacher ask a question to all the students in the class from ch 1 of first flight .. anyone didn't give answer of this question ,,, except me ,,,when i m goin to tell the answer of this question (the question is :-who was lencho what were his main problem?) Then ,,,,i told lencho was a farmer he live in a crest of a low hill he had a corn field .......when i told he had a "corn "field .my teacher said to me "sumaila -u r wrong ,,,,in this chapter ,,,this is not mentioned that lencho had a "corn "field then . . .i told to my teacher that mam corn field is clearly mentioned in the chapter........my teacher becomes angry on me and said that u r a student not a teacher ,,,,if u want to pass the exam what i m teaching u only learn those things ......................................... GUYS,,,tell me ,, that ,. Mai glt ni hu ab jb meri kya sabhi students ki copy mei corn crops hi likha to kya hm sb glt h ....... Iska mtlb meri mam mujhe firse force kr rhi thi (indirectly) tution ke liye ,,,,,jb mujhe ni jan tution to mei q jaun ,,,,,,meti mam mere peeche padi hui faltu mei q ki jo students unke pass tution jaate h unke acche marks ni aate or mere un students (jo unke pass tution jaate h) se jyada marks aate h vo teacher mujhse kl 29,12,2020 ko boli sumaila idher aao ,,,mane bola ,yes mam, boli ki tumne apne english ke exam kya kiya h sara paper glt koya h ,,,,,,,ab ye batao jb men jo papar kiya h vo mene ghr aakr check koya to tb sahi tha ab kya ho gya meri mam ne mujhese gusse mei bola ki "tujhe to mai baad mei bataungi 2,1,2021 ko copy dikhain jayengi tb teri copy to jaroor dikhaungi ,," meri ma ne ???? mujhese bohot hi bad language bmei baat kari jb ki meri koi glti bhi ni thi or chlo koi ni mana ki meri glti thi to mene to 3,4,5 time sorry bhi bola tha unhone it's ok yk bhi ni bola ,,,?????? ab vo teacher mere exam ki sheet mei marks less kr dengi unhone mujhe dhamki diiiii ??????????????
  • 5 answers

Aaquib Khan 5 years, 3 months ago

Sumaila,ma'am ki age kya hai batao?

Baisa Hkm ?? 5 years, 3 months ago

Plz complain to your school principal

Baisa Hkm ?? 5 years, 3 months ago

Aise teachers ko school se suspend kr dena chahiye

Baisa Hkm ?? 5 years, 3 months ago

So sad

Arpita .9 5 years, 3 months ago

Complain to your principle and try to convince your parents to believe you and take a strict action towards her
  • 0 answers
  • 2 answers

Divanshu Rawat 5 years, 3 months ago

Let x be the number of correct answers and y be the number of wrong answers. Since Jayanti answered 120 questions therefore, x+y=120 that is x=120−y..........(1)  Also, it is given that one mark is awarded for each correct answer while  1/2​ mark is deducted for every wrong answer and Jayanti got 90 marks, therefore, x−0.5y=90..........(2) Substituting the value of equation 1 in equation 2: 120−y−0.5y=90 −1.5y=−30 y=20 Therefore,  x=120−20=100 Hence, she answered 100 questions correctly.

Yogita Ingle 5 years, 3 months ago

Let x be the number of correct answers and y be the number of wrong answers.

Since Jayanti answered 120 questions therefore, x+y=120 that is x=120−y..........(1) 

Also, it is given that one mark is awarded for each correct answer while  1/2​ mark is deducted for every wrong answer and Jayanti got 90 marks, therefore,

x−0.5y=90..........(2)

Substituting the value of equation 1 in equation 2:

120−y−0.5y=90

−1.5y=−30

y=20

Therefore, 

x=120−20=100

Hence, she answered 100 questions correctly.

  • 2 answers

Vinay Garg 5 years, 3 months ago

????

Tanu Choudhary # 5 years, 3 months ago

???

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