Class 10 - Chemistry - Chapter - Acids and Bases - Keys Points To Remember (#class10Chemistry)(#cbsenotes)(#eduvictors)

 Acids and Bases 

Class 10 - Chemistry 

(Important Points To Remember)

⑴ Acids are the substances which taste sour, change blue litmus red, are corrosive to metals and furnish H⁺ ions in their aqueous solutions.

⑵ Bases are the substances which taste bitter, change red litmus blue, feel slippery and furnish OH⁻ ions in their aqueous solutions.

⑶ Acid-base indicators are dyes or mixtures of dyes which are used to indicate the presence of acids and bases.

⑷ Indicators are the substances that show one colour in an acidic medium and another colour in a basic medium. Litmus, phenolphthalein and methyl orange are commonly used indicators. Onion, Vanilla extract and Clove oil are olfactory indicators.

CBSE Class 8/9/10 - Mathematics - Typical Factorisation Solved Problems (#class8Maths)(#cbsenotes)(#eduvictors)

Typical Factorisation Solved Problems

Class 8/9/10 - Mathematics

Q1: Factorise x⁴ + x² + 1

Answer: x⁴ + x² + 1

= (x⁴ + 2x² + 1) - x²

Using identity (A + B)² = A² + B² + 2AB

= (x² + 1)² - x²

Using identity A² - B² = (A + B)(A - B)

= (x² + 1 + x)(x² + 1 - x) [Answer]

Class 10 Economics: Chapter 1: Development (Questions and Answers)(#cbsenotes)(#class10Economics)(#eduvictors)

Class 10 Economics: Chapter 1: Development  

Questions and Answers

Q1: What is Per Capita Income?     

Answer: It is obtained by dividing national income by the population of a country i.e. Per Capita Income = National Income / Mid Year Population

Q2: Is progress synonym to development?

Answer: Yes, development is also known as progress.

Q3: What is meant by ‘economic development’? Write the two bases of measuring economic development of a country?

Answer: Economic development is a sustained increase in real per Capita income that promotes economic welfare by reducing poverty, unemployment & inequalities in the distribution of Income. Two bases of measuring economic development are National Income & per Capita Income.

CBSE Class 10 - Biology - Life Processes - Worksheet (#cbsenotes)(#class10Biology)(#cbsenotes)

Class 10 - Biology 

Life Processes - Worksheet

Fill in the blanks

1. The organisms which synthesize their own organic food are called as ___________ .

2. __________ nutrition involves the intake of complex material prepared by other organisms

3. ____ are required for the synthesis of proteins.

4. ____ regulate the exchange of gases and loss of water vapour in plant.

CBSE Class 9/10 Hindi(B) Unseen Passage - Part -2 - कक्षा ९ / १० - हिंदी (ब)अपठित गद्यांश - २ (#class10Hindi)(#cbsenotes)(#eduvictors)

कक्षा ९ / १० - हिंदी (ब) अपठित गद्यांश - २

अपठित गद्यांश

निम्नलिखित गद्यांश को ध्यानपूर्वक पढ़कर नीचे दिए गए प्रश्नों के उत्तर दीजिए :

संसार के सभी धरम धर्मों में एक बात समान है, वह है प्रार्थना, ईश्वर भक्ति। प्रार्थना द्वारा हम अपने हदय के भाव प्रभु के सम्मुख रखते हैं और कुछ न कुछ उस शक्तिमान से माँगते हैं। जब हमें मार्ग नहीं सूझता तो हम प्रार्थना करते है। प्रार्थना का फल उत्तम हो, इसके लिए हम अपने अंदर उत्तम विचार और एकाग्र मन उत्पन्न करने होते हैं, क्योंकि विचार ही मनुष्य को पीड़ा पहुँचाते हैं या उससे मुक्त करते है। हमारे विचार ही हमे ऊँचाई तक ले जाते हैं या फिर खाई में फ़ेंक देते हैं। यह मन ही हमारे लिए दुःख लाता है और यही आनंद की ओर ले जाता है। यजुर्वेद के एक मंत्र के अनुसार यह मन सदा ही प्रबल और चंचल है। यह जड़ होते हुए भी सोते - जागते कभी भी चैन नहीं लेता। जितनी देर हम जागते रहते है, उतनी देर यह कुछ न कुछ सोचता हुआ भटकता रहता है। अव प्रश्न यह उठता है कि मन जो अत्यंत गतिशील है, उसको स्थिर और वश में कैसे किया जाए। मन को वश मे करने का यह तात्पर्य नहीं कि यह गतिहीन हो जाए और यह गतिहीन हो ही नहीं सकता। जिस प्रकार अग्नि का धर्म ऊष्ण है उस परकार चंचलता मन का धर्म है|

CBSE Class 8 - Social Science - History Chapter 9: Women Caste and Reform NCERT Questions and Answers (#class8History)(#cbsenotes)(#eduvictors)

Chapter 9: Women Caste and Reform

Class 8 - Social Science - History  

NCERT Questions and Answers

Question 1: What social ideas did the following people support? 
Rammohan Roy Dayanand Saraswati Veerasalingam Pantulu Jyotirao Phule Pandita Ramabai Periyar Mumtaz Ali Ishwarchandra Vidyasagar 

Answer:
Rammohun Roy: Supported the banning of the practice of 'Sati'

Dayanand Saraswati: Supported Widow remarriage

Veerasalingam Pantulu: Supported Widow remarriage

Jyotirao Phule: Supported equality among castes

Pandita Ramabai: Supported Women's Education, Economic Independence for women and set up widow homes

Periyar: Supported equality for untouchables.

Mumtaz Ali: Supported Women's Education

Ishwarchandra Vidyasagar: Supported Widow remarriage

CBSE Class 10 - Mathematics - Real Numbers and Polynomials - HCF and LCM related typical problems (#class10Maths)(#cbsenotes)(#eduvictors)

HCF and LCM related Typical Problems

Class 10 - Mathematics - Real Numbers and Polynomials

   
Q1: Find the HCF of  a²b⁴c³ and a³b²c⁵.

Answer:
H.C.F of  a³ and a² is a²,
H.C.F. of b² and b⁴ is b² and
H.C.F. of c⁵ and c³ is c³

∴ Required H.C.F. is a²b²c³.


Q2:  Find the HCF of 96 and 404 by prime factorisation method. Hence, find their LCM.

Class 11 - Business Studies - Forms Of Business Organisation - Sole-Proprietorship - Study Notes (#class11BusinessStudies)(#eduvictors)(#cbsenotes)

Forms Of Business Organisation -
Sole-Proprietorship

Class 11 - Business Studies - Study Notes

Sole proprietor means a form organization in which there is the only owner at business. He himself manages and is the only receipt of all profits and losses (risks).

Features of Sole-Proprietorship:

① Single ownership:
He is the sole owner of all the assets and resources of the business.

② No separate Legal Entity: 
The Business has no separate existence or entity that of the business. All the assets and liabilities of the business are that of the businessman.

③ No Legal Formalities: 
No Legal Formalities are required to start. manage and dissolve such business organization.

CBSE Class 9/10 Hindi(B) Unseen Passage - कक्षा ९ / १० - हिंदी (ब)अपठित गद्यांश (#class10Hindi)(#cbsenotes)(#eduvictors)

कक्षा ९ / १० - हिंदी (ब) अपठित गद्यांश

अपठित गद्यांश

निम्नलिखित गद्यांश को ध्यानपूर्वक पढ़कर नीचे दिए गए प्रश्नों के उत्तर दीजिए :

समस्याएँ वस्तुत: जीवन का पर्याय हैं। यदि समस्याएँ न हों, तो आदमी प्राय: अपने को निष्क्रिय समझने लगेगा। ये समस्याएँ वस्तुत: जीवन की प्रगति का मार्ग प्रशस्त करती हैं। समस्या को सुलझाते समय, उसका समाधान करते समय व्यक्ति का तत्व उभरकर आता है। धर्म, दर्शन, ज्ञान मनोविज्ञान इन्हीं प्रयत्नों की देन हैं। पुराणों में अनेक कथाएँ यह शिक्षा देती हैं कि मनुष्य जीवन की हर स्थिति में जीना सीखे व समस्या उत्पन्न होने पर उसके समाधान के उपाय सोचे। जो व्यक्ति जितना उत्तरदायित्वपूर्ण कार्य करेगा, उतना ही उसके समक्ष समस्याएँ आएँगी और उनके परिपेक्ष्य में ही उसकी महानता का निर्धारण किया जाएगा। दो महत्वपूर्ण तथ्य स्मरणीय हैं - प्रत्येक समस्या अपने साथ संघर्ष लेकर आती है। प्रत्येक संघर्ष के गर्भ में विजय निहित रहती है। समस्त ग्रंथों और महापुरुषों के अनुभवों का निष्कर्ष यह है कि संघर्ष से डरना अथवा उससे विमुख होना लौकिक व पारलौकिक सभी दृष्टियों से अहितकर है, मानव-धर्म के प्रतिकूल है और अपने विकास को अनावश्यक रूप से बाधित करना है।

(क) 'समस्याएँ वस्तुत: जीवन का पर्याय हैं' का तात्पर्य है :

CBSE Class 9 - Geography - Chapter 1 - Reasons for Calling India as Sub Continent (#cbsenotes)(#class9Geography)(#eduvictors)

Reasons for Calling India as Sub Continent 

Class 9 Geography - Chapter 1: India - Size & Location

India lies in the southern part of the Asian continent. Though India is a country it is often called a subcontinent. India is often called a subcontinent because it is a distinct landmass, not just a country.

A country which is having features of a great geographical extent, huge population, diversified geographical and socio-cultural features is called a subcontinent. Although India is not treated as a continent it has the features of a continent. It is called a subcontinent due to the following reasons:


1 Large Area: 

India has a large area of 3.28 million square kilometres, taking seventh place in the world.

2. Large Population: 

India has a population of 121 crores according to 2011 census (now approx. 128 crores), attaining a second place in the world. 

3. Diversified Physiographic divisions: 

India has diversified physiographic conditions with a variety of landforms like the Himalayas, the Indo-Gangetic plains, plateaus and coastal plains etc.

4. Climate: 

India has a distinctive monsoon type of climate. Extremes in climatic conditions like temperature, rainfall, sunshine, humidity etc can be observed.

5. Soils: 

A variety of soils like Alluvial, Black, Red, Laterite etc are found. 

6. Land of Many Religions: 

The religions like Hinduism, Islam, Christianity, Buddhism, Jainism, Sikhism etc are being practised.

7. Land of Diversity: 

It is a land of diversity having varied modes of living, culture etc. There is the Aryan culture in North India and Dravidian culture in South India.

8. Tropic of Cancer: 

The tropic of cancer runs half-way through the country. The southern half of the country lies within the tropics and experiences a tropical climate.


9. Historical Perspectives:

Indian subcontinent does not constitute only India, but it also constitutes other SAARC countries that are Pakistan, Nepal, Bhutan, Bangladesh, Sri Lanka & Maldives. This group of countries are combined together to be called Indian subcontinent as once in History, they were a part of India. 

☛See Also:

Geography - Ch1 - India - Size & Location (Q & A)
Geography - Ch1 - India - Size & Location (VSQA)