Monday, 20 April 2020

Freedom Struggle I. The Revolt of 1857

Freedom Struggle

I. The Revolt of 1857

1. The Revolt of 1857 is an important landmark in the history of India which
occurred during the governer-generalship of Lord canning.

2. Causes of the Revolt : The revolt of 1857 was a combination of political,
economic, socio-religious and military causes.

3. Political : Nana Sahib was refused pension, as he was the adopted son of
peshwa Baji Rao II. Avadh was annexed in 1856, on charges of
maladministration Satara, Jhansi, Nagpur and Sambhalpur were annexed owing
to Doctrine of Lapse.

4. Economic : Heavy taxation, forcibly evictions, discriminatory tariff policy
against Indian products and destruction of traditional handicrafts that hit peasants
and artisans.

5. Socio religious : British social reforms (abolition of sati, 1829; legalisation of
widow remarriage, 1856 etc.) hurted the sentiments of orthodox and conservative
People.

6. Military : Discrimination with Indian soldiers.

3. Immediate cause : The introduction of Enfield rifles whose cartidges were
said to have a greased cover made of beef and pork sparked off the revolt.

4. The Beginning and Spread of the Revolt : On March 29, 1857, an Indian
sepoy of 34 Native Infantry, Mangal Pandey, killed two British officers-Hugeson
and Baugh-on parade at Barrackpore (near Calcutta). The Indian soldiers
present, refused to obey orders to arrest Mangal Pandey. However, he was later
on arrested, put to and hanged.

5. The mutiny really started at Merrut on 10th May 1857. The occasion was the
punishment of some sepoys for their refusal to use the greased cartridges. The
soldiers alongwith other groups of civilians, went on a rampage shouting 'Maro
Firangi ko'. They broke open jails, murdered Europeans, burnt their houses and  marched to Delhi after sunset.

6. The appearance of the marching soldiers next morning (i.e. 11th May) in Delhi
was a signal to the local soldiers, who in turn revolted, seized the city andp roclaimed the 82-year old Bahadur Shah 'Zafar', as Shahenshah-i-Hindustan
(i.e. Emperor of India).

7. Within a month of the capture of Delhi, the revolt spread to the different parts
of India (esp. all over the North India, Central India and Western India). South
remained quite and Punjab and Bengal were only marginally affected.

Note :

1. Bahadur Shah II: was Deported to Rangoon, where he died in 1862. His sons
were dead; Nana Sahib (original name–Dhundhu Pant), Begum Hazrat Mahal
and Khan Bahadur Khan : Escaped to Nepal; Tantiya Tope (Original name —
Ramchandra Pandurang) : was captured and executed on 15th April, 1859; Rani
Laxmi Bai : Died in the battle-field; Kuer Singh : was wounded and died on 26
April, 1858.

2. Sir Huge Rose described Laxmi Bai as 'the best and bravest military leader of
the rebel'.

3. Other Important Leaders : Khan Bahadur Khan (Bareilly), Maulavi
Ahmadullah (Faizabad), Azimullah Khan (Fatehpur), Devi Singh (Mathura),
Kadam Singh (Merrut) etc.

4. English authority re-established in India during July-Dec. 1858.
Causes of Failure : The Revolt of 1857 was an unsuccessful but heroic effort to
eliminate foreign rule. The main causes

were : 1. Disunity of Indians and poor
organisation 2. Lack of complete nationalism-Scindias, Holkars, Nizam and
others actively helped the British 3. Lack of coordination between sepoys,
peasants, zamindars and other classes 4. Many had different motives for
participating in the revolt.
Significance : The important element in the revolt lay in Hindu-Muslim unity.
People exhibited patriotic sentiment without any touch of communal feelings. It
no doubt began as a mutiny of soldiers, but soon turned into a revolt against
British rule in general.






Sunday, 19 April 2020

CBSE 10th Board Exam 2020: Chapter wise Important Sanskrit Objective Questions

CBSE 10th Board Exam 2020: Chapter wise Important Sanskrit Objective Questions

Central Board of Secondary Education 

(CBSE) has announced a major modification in the Class 10 exam pattern from 2020.

 CBSE plans to introduce more MCQs in the board exams. As per the new exam pattern, at least 25% of the Class 10 Hindi B question paper is expected to contain MCQs.

While students might perceive it as unchallenging or feel relaxed thinking they don’t need to write descriptive answers, cracking these still requires a lot of hard work and practice. 

Answering these questions correctly requires a lot of critical thinking. CBSE Board Class 10 Sanskrit Objective Questions will help the students with this.

Download Chapter wise 
Sanskrit Objective Questions

Free Download

ChapterDownload
1. अपठित गद्यांशClick Here
2. पत्र लेखनClick Here
3. चित्र वर्णनClick Here
4. अनुच्छेद लेखनClick Here
5. विलोम तथा पर्यायClick Here
6. संस्कृत अनुवादClick Here
7. सन्धिClick Here
8. समासःClick Here
9. प्रत्ययाःClick Here
10. वाच्य परिवर्तनम्Click Here
11. समयलेखनम्Click Here
12. अव्ययपदानिClick Here
13. अशुद्धि संशोधनम्Click Here
14. शुचिपर्यावरणम्Click Here
15. बुद्धिर्बलवती सदाClick Here
16. व्यायामः सदा पथ्यःClick Here
17. शिशुलालनम्Click Here
18. जननी तुल्यवत्सलाClick Here
19. सुभाषितानिClick Here
20. सौहार्दै प्रकृतेः शोभाClick Here
21. विचित्रः साक्षीClick Here
22. सूक्तयःClick Here
23. प्राणेभ्योऽपि प्रियः सुहृत्Click Here

Chemicals


Attributes of Living things
click to collapse contents

  1. They are composed of cells. Cells consist of a membrane around the outside, a nucleus containing DNA, and the cytoplasm.
  2. Growth
  3. Reproduction
    Sexual reproduction: the offspring vary from the parents
    Asexual reproduction: the offspring are identical clones
  4. Respond to stimuli: for example plants respond to light, water, gravity, touch.
  5. Metabolism: all the chemical reactions in an organism. The most critical reactions are respiration and photosynthesis.
  6. Movement: for example sperm can swim, whole plants grow in particular directions, or there is cyclosis in cells.
  7. Complexity: they are made of molecules and organelles.
  8. Adaptation and evolution: populations evolve to become better adapted to their environment.

Atoms & Bonds
click to collapse contents

Element : a substance that cannot be broken down by chemical reaction eg carbon, gold. Everything in the universe is made of 92 different elements. Living things contain a maximum of 25 elements.

Important biological elements :
     Carbon      C      Oxygen        O
     Hydrogen    H      Nitrogen      N
     Calcium    Ca      Phosphorus    P
     Potassium   K      Sulfur        S

Compound - two or more elements joined by chemical bonds eg salt, water, plastic.

Atom - the smallest unit of an element.

Atomic number = Number of Protons per atom. Atomic number also equals the number of electrons.
Example : Carbon has 6 protons and 6 electrons

Atomic mass = Number of Protons + Neutrons.
Example: carbon 14 has 8 neutrons

Isotopes : atoms of the same element that differ in the number of neutrons.

Radioactive atoms : large isotopes that break apart, releasing energy. The energy is either:

Alpha particles : weak, cannot penetrate paper.

Beta particles : stronger, can penetrate paper but not metal.

Gamma rays : very strong, can penetrate metal and harm living things. Radioactive atoms can be used to: a) Track chemicals in the body b) Work out the age of fossils. Accuracy of fossil dating methods c) Track the movement of individual animals (eg butterflies). Isotopes and murder

Chemical bonds
click to collapse contents

Chemical bonds only involve electrons. Valence electrons - electrons in the outer shell ( the valence shell ) of an atom. All atoms try to fill their valence shell of electrons. Maximum number of electrons per shell :
    First shell     2
    Second shell    8
    Third shell     8
So, for example, oxygen has a total of 8 electrons. Two go in the first shell, and 6 go in the second shell.

Molecule: two or more atoms joined by chemical bonds.
A) Covalent bonds are very strong. The atoms share electrons. Examples: hydrogen gas H2 , water H2O
B) Ionic bonds are also strong. One atom gives electrons to another. Eg. NaCl or Na+Cl-
C) Hydrogen bonds are weak. A hydrogen atom is attracted to a slight negative charge on a different molecule. Hydrogen bonds are important in holding together proteins.

Macromolecules : very large molecules, made of hundreds, or thousands, of atoms. Many are polymers : large molecules made of similar, small monomers joined together.

Hydrolysis : a chemical reaction that breaks polymers into monomers eg digestion Condensation synthesis : a chemical reaction that joins monomers together by removing water.

There are 4 types of macromolecule in living things : carbohydrates, lipids, proteins and nucleic acids.

1). Carbohydrates
Carbohydrates contain C , H and O. They are made of simple sugars called monosaccharides, such as glucose (C6H12O6), fructose (C6H12O6) and glyceraldehyde (C3H6O3). Monosaccharides dissolve in water.
Disaccharides consist of 2 monosaccharides joined by condensation synthesis such as maltose or brewing sugar ( 2 glucose ) and sucrose or table sugar ( glucose + fructose ).
Polysaccharides are made of many monosaccharides such as: starch ( energy storage in plants ) and cellulose ( cell walls in plants ).

2). Lipids
Lipids contain C , H , and O. Lipids do not dissolve in water. Lipids can be fats, phospholipids , waxes or steroids.
A) Fats (triglycerides). Fats are made of glycerol and 3 fatty acids. They are used for energy storage.
Saturated fats : no double bonds (only single bonds); straight molecules ; solids ; found in animals ; eg butter
Unsaturated fats : have 1 or more double bonds ; bent molecules ; liquids; in plants ; eg corn oil
Trans fats are produced during cooking, and are common in cookies, snacks and fried food. Only unsaturated fat in the diet is healthy. You should try to cut back on the saturated and trans fat, as they increase the risk of heart attack.
B) Phospholipids. Phospholipids are made of glycerol, 2 fatty acids and phosphate. Part of the molecule is hydrophobic, part is hydrophilic. Phospholipids make up most of the cell membrane.
C) Waxes. Waxes consist of a fatty acid joined to an alcohol. They are used for waterproofing in plants ( and some animals ).

3). Proteins
Proteins contain C , H , O and N. They are made of amino acids joined together. There are 20 different amino acids. The order of amino acids in a protein is important. Proteins are found in cell membranes, seeds and as enzymes.
Primary structure : the order of amino acids.
Secondary structure : the protein folds, and is held by hydrogen bonds.
Tertiary structure : covalent or ionic bonds between different side chains of the protein.

4). Nucleic acids
Nucleic acids contain C , H , O , N and P. They are made of nucleotides, ( phosphate, sugar and base )

DNA ( Deoxyribonucleic acid ) DNA has deoxyribose as the sugar. It has 4 bases :
   Adenine     Thymine
   Guanine    Cytosine
Bases pair up and join with hydrogen bonds to form a double helix (Adenine opposite thymine and guanine opposite cytosine). The code on DNA carries information the cell needs to make proteins ( the primary structure). Closely related species have similar DNA. Humans and primates. Similarly, DNA studies can show if what looks like one species is really two different species.

RNA ( ribonucleic acid )
RNA has ribose as the sugar. RNA has 4 bases : with Uracil instead of Thymine. RNA is a single strand. RNA moves from the nucleus of the cell to the cytoplasm to allow the cell to make proteins ( mRNA : messenger RNA ). New RNA drugs could be very useful, for example to prevent blood clots or treat cancer.

Introduction of Botany


Introduction
click to collapse contents

  • Botany is the branch of biological science which focuses on the study of plants and plant life.
  • The word botany is derived from the Greek word "botanikos," meaning "of herbs”
  • Plants are an essential component of all ecosystems, and botany contributes significantly to the basic understanding of essential processes that affect ecosystems and natural environments
  • Plants are essential to the lives of humans, providing all food either directly or indirectly as well as breathable oxygen.
  • Botany is the scientific study of plants:
    • How plants function?
    • What they look like?
    • How they are related to each other?
    • Where they grow?
    • How people make use of plants?
    • How plants evolved?
  • Botany is considered to be one of the oldest sciences as it began with the effort of early humans to identify edible, poisonous, and medicinal plants
    • The study of botany covers plants, algae, and fungi
    • ◆ It also includes following areas:
    • ◆Growth and reproduction
    • ◆Structure
    • ◆Metabolism
    • ◆Development
    • ◆Chemical properties

The main areas of Botany
click to collapse contents

Plant anatomy: the structure of plants
Plant physiology: the function of parts of the plant
Plant taxonomy: the classification of plants
Plant ecology: the interactions of plants and other species
Genetics: the study of inheritance
Economic botany: the practical uses of plants and plant products.

Plants
click to collapse contents

The word ‘Plant’ encompasses a wide range of living organisms, all of which belong to the kingdom Plantae that
  • Produce food from sunlight and inorganic matter by the process of photosynthesis.
  • Have rigid cell walls containing cellulose.

Characteristics of Plants
click to collapse contents

· Following are the characteristics of plants:
  • Eukaryotic (true nucleus) organisms.
  • Plants are unable to move on their own, mostly being rooted in one place.
  • They synthesize their own food by the process of photosynthesis.
  • Indeterminate growth.
  • Their cells have cell walls composed mainly of cellulose.
  • Their cells contain Chlorophyll which enables plants to convert energy from the sun into food.
  • Their cells usually have large vacuoles.
  • Plants store their food as starch.

Parts of a Plant
click to collapse contents

· The parts of a plant can be divided into two groups:
  • Internal Plant Parts
  • External Plant Parts
Internal Plant Parts

· Internal plant parts composed of following parts:
  • Cells: Cells are the basic structural and physiological units of plants.
  • Tissues: Plant tissues are organized groups of similar cells that work together to perform a specific function.
External Plant Parts

· External plant parts are composed of following elements:
  • Roots: Roots typically originate from the lower portion of a plant, responsible for anchoring the plant to the ground and extracting water and minerals from the soil.
  • Stems: Stems are structures which support buds and leaves and serve as conduits for carrying water, minerals, and sugars.
  • Leaves: The principal function of leaves is to absorb the sunlight needed to manufacture plant sugars through a process called Photosynthesis.
  • Flowers: All flowers are responsible for one important function: reproduction.
  • Fruits: Fruit consists of fertilized, mature ovules (seeds), plus the ovary wall.
  • Seeds: A seed contains all of the genetic information needed to develop into an entire plant.

Explained: CBSE’s 75% attendance rule for taking Class 10, 12 exams this year

#TNCBSE Notes

Explained: CBSE’s 75% attendance rule for taking Class 10, 12 exams this year

These students are supposed to take their Class 10 and 12 Board exams, and as per rules, those who do not have at least 75 per cent attendance will not be allowed to appear for them.

The Central Board of Secondary Education (CBSE) has directed its affiliated schools to calculate the attendance of Class 10 and Class 12 students as on January 1, 2020.
These students are supposed to take their Class 10 and 12 Board exams, and as per rules, those who do not have at least 75 per cent attendance will not be allowed to appear for them.

The Board exams are set to begin on February 15, and admit cards will be issued only to the students who are eligible.

Is this a new rule that CBSE has made?
No. CBSE had earlier issued a circular on the attendance policy in August 2019.
That circular had stressed the need to create a Standard Operating Procedure (SOP) around attendance, so as to ensure the “importance of the classes and the attendance”.

“As per analysis of the result of 2019 of the students whose attendance had been condoned have performed poorly in the examination”, CBSE said. Now, in its new notice dated December 27, 2019, it has asked schools to calculate the attendance as per Rules 13 and 14 of the examination bylaws.

What are Rules 13 and 14 of the examination bylaws?

Rule 13, titled “A Regular Course of Study”, says: “No student from a School affiliated to the Board shall be eligible to take the senior School Certificate Examination conducted by the Board unless he has completed 75% of attendance counted from the opening of Class XII up to the first of the month preceding the month in which the examination commences in the internal assessment.”

For students participating in sports at the national level organised by recognised federations, a minimum of 60 per cent of attendance is required.

Rule 14, titled “Rules for Condonation of Shortage of Attendances” states that in cases where the attendance of a pupil falls below 75 per cent, the head of the school may submit the name of the student concerned to the Board provisionally.

These rules are applicable to subjects of internal assessment as well.

“If the candidate is still short of the required percentage of attendance within three weeks of the commencement of the examination, the Head of the Institution shall report the case to the Regional Officer concerned immediately,” the rule says.

The school head can submit their recommendation to the Regional Officer for condonation of shortage of attendance if they think that the candidate deserves special consideration.

The Chairman of the CBSE can offer condonation of shortage in attendance up to 15 per cent below the prescribed requirements.
In cases where it is below 60 per cent, the Chairman can offer condonation only in “exceptional circumstances created on medical grounds”, which include the candidate suffering from diseases including cancer, AIDS, tuberculosis or similar diseases that require prolonged periods of hospitalisation.

As per the rules, “The Principal shall refer a case of shortage within the above prescribed limit of condonation to the Board, either with the recommendations or with valid reasons for not recommending the case.”

Schools need to consider attendance of students up to January 1 of the academic session, and they must, by January 7, compile all shortages in attendance along with documents required, if any.

Within 15 days of the date of receipt of the attendance list and documents, the Regional Office will communicate any deficiencies to the school (latest by January 21).

Within seven days of communication received from the Regional Office, schools will need to communicate the fulfillment of deficiency. February 7 is the last date for the CBSE to accord any approvals.

What does the CBSE circular say about exceptions?

The notice mentions five “valid” reasons for condonation of shortage of attendance including prolonged illness, loss of father/mother or some other reason that merits special attention and authorised participation in sports at the national or international level organised by recognised federations, the CBSE or the School Games Federation of India (SGFI).

List of documents needed
To pass the exams, candidates need to clear both theory and practical exams separately. For CBSE, candidates need to secure 33 per cent marks to pass.




CBSE 10th Board Exam 2020 : Chapter wise Important Hindi A Objective Questions

CBSE 10th Board Exam 2020 :

Chapter wise Important 

Hindi A Objective Questions

Central Board of Secondary 
Education (CBSE)


#TNCBSE Notes

Has announced a major modification in the Class 10 exam pattern from 2020.

CBSE plans to introduce more MCQs in the board exams. As per the new exam pattern, at least 25% of the Class 10 Hindi A question paper is expected to contain MCQs.

While students might perceive it as unchallenging or feel relaxed thinking they don’t need to write descriptive answers, cracking these still requires a lot of hard work and practice. 

Answering these questions correctly requires a lot of critical thinking. CBSE Board Class 10 Hindi A Objective Questions will help the students with this.

Download Chapter wise 
Hindi A Objective Questions

ChapterDownload
1. अपठित गद्यांशClick Here
2. अपठित काव्यांशClick Here
3. व्याकरण वाक्य भेदClick Here
4. व्याकरण वाच्यClick Here
5. व्याकरण पद परिचयClick Here
6. व्याकरण रसClick Here
7. निबंध लेखनClick Here
8. पत्र लेखनClick Here
9. विज्ञापन लेखनClick Here
10. सूरदासClick Here
11. तुलसीदासClick Here
12. सूर्यकांत त्रिपाठी निरालाClick Here
13. नागार्जुनClick Here
14. गिरिजाकुमार माथुरClick Here
15. ऋतुराजClick Here
16. मंगलेश डबरालClick Here
17. नेताजी का चश्माClick Here
18. बालगोबिन भगतClick Here
19. लखनवी अंदाज़Click Here
20. मानवीय करुणा की दिव्य चमकClick Here
21. एक कहानी यह भीClick Here
22. नौबतखाने में इबादतClick Here
23. माता का ऑचलClick Here
24. जॉर्ज पंचम के नाकClick Here
25. साना-साना हाथ जोड़ीClick Here