Welcome to Smartindia Student's Blog
IMPORTANT DATES IN SEPTEMBER
| 1 September | Nutrition Week 1-7 |
| 2 September | Coconut Day |
| 4 September | Minority Welfare Day |
| 5 September | Teacher's Day |
| 7 September | Forgiveness Day |
| 8 September | International Literacy Day (UNESCO) |
| World Literacy Day | |
| 10 September | Haryana Statehood Day |
| Punjab Statehood Day | |
| 13 September | World Flowers Day |
| 14 September | Hindi Day, World First Aid Day |
| 15 September | Engineers Day |
| International Day of Democracy | |
| 16 September | World Ozone Day |
| 18 September | International Day of Peace |
| 21 September | Biosphere Day |
| World Alzheimer's Day | |
| 22 September | Girl Child Week 22-26, Rose Day (Welfare of cancer patients) |
| 24 September | Girl Child Day |
| World Heart Day | |
| 25 September | Social Justice Day |
| 26 September | CSIR Foundation Day, Day of the Deaf |
| 27 September | World Tourism Day |
| 28 September | Gunners Day |
IMPORTANT DATES IN AUGUST
| 1 July | Architecture Day |
| Doctor's Day | |
| International Jokes Day | |
| Vana Mahotsav Week 1-7 | |
| 2 July | World Sports Journalists Day |
| 4 July | American Independence Day |
| 6 July | World Zonnosis Day |
| 7 July | International day of Co-Operatives |
| 11 July | World Population Day |
| 20 July | Man Walks on the Moon |
| 26 July | Kargil Victory Day |
August |
go to the top |
| 1 August | World Breast-feeding Week |
| 3 August | Hiroshima Day |
| Liberation Day | |
| 6 August | Hiroshima Day |
| 8 August | World Senior Citizen's Day |
| 9 August | August Kranti Divas |
| International day of Solidarity with the strugleof Women in South Africa | |
| International day of the world'sIndigenous People | |
| Nagasaki Day | |
| Quit India Movement Day | |
| 10 August | Dengue Prevention Day |
| 12 August | International Youth Day |
| Librarians Day | |
| 13 August | Left Hander's Day |
| 14 August | Pakistan's Independence Day |
| 15 August | India's Independence Day |
| West Bengal Day | |
| 18 August | Day of the World's Indigenous People |
| 19 August | World Photography Day |
| 20 August | Sadbhavna Divas |
| World Mosquito Day | |
| 24 August | Kolkata's Birth Day |
| Sanskrit Day | |
| 26 August | Women's Equality Day |
| 29 August | National Sports Day |
| Sports Day (Dhyanchand's birthday) | |
| Telugu Language Day | |
| 30 August | Small Industry Day |
IMPORTANT DATES IN JULY
| 1 July | Architecture Day |
| Doctor's Day | |
| International Jokes Day | |
| Vana Mahotsav Week 1-7 | |
| 2 July | World Sports Journalists Day |
| 4 July | American Independence Day |
| 6 July | World Zonnosis Day |
| 7 July | International day of Co-Operatives |
| 11 July | World Population Day |
| 20 July | Man Walks on the Moon |
| 26 July | Kargil Victory Day |
August |
go to the top |
| 1 August | World Breast-feeding Week |
| 3 August | Hiroshima Day |
| Liberation Day | |
| 6 August | Hiroshima Day |
| 8 August | World Senior Citizen's Day |
| 9 August | August Kranti Divas |
| International day of Solidarity with the strugleof Women in South Africa | |
| International day of the world'sIndigenous People | |
| Nagasaki Day | |
| Quit India Movement Day | |
| 10 August | Dengue Prevention Day |
| 12 August | International Youth Day |
| Librarians Day | |
| 13 August | Left Hander's Day |
| 14 August | Pakistan's Independence Day |
| 15 August | India's Independence Day |
| West Bengal Day | |
| 18 August | Day of the World's Indigenous People |
| 19 August | World Photography Day |
| 20 August | Sadbhavna Divas |
| World Mosquito Day | |
| 24 August | Kolkata's Birth Day |
| Sanskrit Day | |
| 26 August | Women's Equality Day |
| 29 August | National Sports Day |
| Sports Day (Dhyanchand's birthday) | |
| Telugu Language Day | |
| 30 August | Small Industry Day |
IMPORTANT DATES IN JUNE
| 1 June | International Children's Day, World Milk Day |
| 3 June | World Naturist Day |
| 4 June | International Day for Innocent Children, Victims of Aggression |
| 5 June | World Environment Day |
| 14 June | World Blood Donere Day |
| 21 June | Hugging Day |
| World Music Day | |
| 23 June | International Olympic Day |
| 26 June | International Anti - Drugs Day |
| International Day against Drug Abuse and illicit Trafficking | |
| 27 June | World Diabetes Day |
IMPORTANT DATES IN MARCH
MARCH
3 March
National Defence Day
4 March
National Security Day
8 March
International Women's Day
Mothers Day
9 March
CISF Raising Day
12 March
Mauritius Day; Central Industrial Security Force Day
13 March
No Smoking Day
15 March
World Consumer Rights Day, World Disabled Day
16 March
National Vaccination Day
17 March
St. Patricks Day
18 March
Ordnance Factories Day (India)
19 March
World Disabled Day
21 March
World Forestry Day
International Day for th eElimination of Racial Discrimination
22 March
World Water Day
23 March
World Meteorological Day
24 March
World TB Day
26 March
Bangladesh Liberation Day
27 March
World Stage Artists Day
31 March
Financial Year Ending
IMPORTANT DATES IN FEBRUARY
FEBRUARY
| 2 February | National day of Srilanka |
| World Wetlands Day | |
| 5 February | Kashmir Day (Organized by Pakistan) |
| 13 February | Sarojini Naidu's Birth Anniversary |
| 14 February | St. Valentine's Day |
| 24 February | Central Excise Day |
| 28 February | National Science Day |
IMPORTANT DATES IN JANUARY
JANUARY
1 January
New Year Day
Road Safety Week
Army Medical Corps Establishment Day
8 January
African National Congress Foundation Day
9 January
NRI Day
11 January
APSRTC Establishment Day
Death anniversary of Lai Bahadur Shastri
12 January
National Youth Day (Birth day of Swami Vivekanand)
15 January
Army Day
21 January
Manipur Day
Meghalaya Day
Tripura Day
23 January
Desh Prem Divas
Netaji Subhash Chandra Bose's birth anniversary
25 January
Himachal Pradesh Day
National Tourism Day
26 January
Indian Republic Day
Jammu & Kashmir Day
International Customs Day
28 January
Birth anniversary of Lala Lajpat Rai
30 January
Martyr's Day, Mahatma Gandhi's Martyrdom Day
World Leprosy Eradication Day
Sarvodaya Day
IMPORTANT DATES IN DECEMBER
DECEMBER
| 1 November | Andhra Pradesh Formation Day |
| Haryana, Karnataka, Kerala, Madhya Pradesh, Punjab States Formation Day | |
| 5 November | International Week of Science and Peace (5-11) |
| 7 November | Infant Protection Day; World Cancer Awareness Day |
| 9 November | Legal Services Day |
| Pravasiya Bharatiya Divas/Legal Services Day | |
| Uttaranchal State Formation Day | |
| 10 November | Forest Martyrs Day |
| Transport Day | |
| 11 November | Armistice Day |
| Education Day | |
| 12 November | National Broadcasting Day |
| 14 November | Children's Day, World Diabetics day |
| Cooperative Week | |
| National Book Week | |
| National Land Resources Conservation Week (14-20) | |
| National Library Week | |
| Universal Children's Day | |
| World Diabetes Day | |
| 15 November | Jharkhand State Formation Day |
| New Born Week (15-21) | |
| Thanks Giving Day | |
| 16 November | International Day for Tolerance |
| National Press Day | |
| Pharmacy Week (16-22) | |
| 17 November | Guru Nanak Dev's Birth Anniversary |
| National Epilepsy Day | |
| 18 November | Territorial Army Day |
| 19 November | National Integration Day, Citizen's Day |
| World Heritage Week (19-25) | |
| 20 November | Universal Children's dAy (UN), Africa Industrilisation Day |
| 21 November | World Fisheries Day |
| World Hello Day | |
| World Television Day | |
| 25 November | International Day against Violence against Women |
| 26 November | Law Day, National Law Day |
| 29 November | international Day of Solidarity with Palestinian People |
IMPORTANT DATES IN NOVEMBER
NOVEMBER
| 1 November | Andhra Pradesh Formation Day |
| Haryana, Karnataka, Kerala, Madhya Pradesh, Punjab States Formation Day | |
| 5 November | International Week of Science and Peace (5-11) |
| 7 November | Infant Protection Day; World Cancer Awareness Day |
| 9 November | Legal Services Day |
| Pravasiya Bharatiya Divas/Legal Services Day | |
| Uttaranchal State Formation Day | |
| 10 November | Forest Martyrs Day |
| Transport Day | |
| 11 November | Armistice Day |
| Education Day | |
| 12 November | National Broadcasting Day |
| 14 November | Children's Day, World Diabetics day |
| Cooperative Week | |
| National Book Week | |
| National Land Resources Conservation Week (14-20) | |
| National Library Week | |
| Universal Children's Day | |
| World Diabetes Day | |
| 15 November | Jharkhand State Formation Day |
| New Born Week (15-21) | |
| Thanks Giving Day | |
| 16 November | International Day for Tolerance |
| National Press Day | |
| Pharmacy Week (16-22) | |
| 17 November | Guru Nanak Dev's Birth Anniversary |
| National Epilepsy Day | |
| 18 November | Territorial Army Day |
| 19 November | National Integration Day, Citizen's Day |
| World Heritage Week (19-25) | |
| 20 November | Universal Children's dAy (UN), Africa Industrilisation Day |
| 21 November | World Fisheries Day |
| World Hello Day | |
| World Television Day | |
| 25 November | International Day against Violence against Women |
| 26 November | Law Day, National Law Day |
| 29 November | international Day of Solidarity with Palestinian People |
IMPORTANT DATES IN OCTOBER
OCTOBER
1 October
International Day for the Elderly (UN)
International Music Day
National Voluntary Blood Donation Day
2 October
Gandhi Jayanti, International Non-violence Day
Human Rights Protection Day
Prisoner's Day
World Ostony Day
World Wide Life Week (2-8)
3 October
World Nature Day, World Habitat Day
4 October
International Mental Health Health Week (4-10)
World Animal Welfare Day
World Space Week(4-10)
5 October
World Habitat Day; World Teacher's Day
6 October
World Wildlife Day
8 October
Indian Air force Day
Rapid Action Force Raising Day
9 October
National Postal Week(9-14)
World Postal Day
10 October
World Disaster Reduction Day (2nd Wednes Day)
World Mental Health Day; National Post Day
12 October
World Sight Day
13 October
World Arthritis Day
World Calamity Control Day (UN)
14 October
World Standards Day
15 October
World White Cane Day
World White cane day (guiding the blind)
16 October
World Anaesthesiologists Day
World Food Day
17 October
International Poverty Eradication Day
20 October
National Solidarity Day (China attacked India on that day)
21 October
Global Iodine Deficiency Disorders Day
Police Commemoration Day
24 October
Disarmament Week(24-30)
United Nations Day
27 October
Infantry Day
30 October
World Thrift day
31 October
Halloween Day
National Integration Day
CHEMISTRY
Chemistry, a branch of physical science, is the study of the composition, properties and change of matter. Chemistry is chiefly concerned with atoms and their interactions with other atoms - for example, the properties of the chemical bonds formed between atoms to create chemical compounds. As well as this, interactions including atoms and other phenomena - electrons and various forms of energy - are considered, such as photochemical reactions, oxidation-reduction reactions, changes in phases of matter, and separation of mixtures. Finally, properties of matter such as alloys or polymers are considered.
Chemistry is sometimes called "the central science" because it bridges other natural sciences like physics, geology and biology with each other. Chemistry is a branch of physical science but distinct from physics.
The etymology of the word chemistry has been much disputed. The genesis of chemistry can be traced to certain practices, known as alchemy, which had been practised for several millennia in various parts of the world, particularly the Middle East.
In retrospect, the definition of chemistry has changed over time, as new discoveries and theories add to the functionality of the science. The term "chemistry", in the view of noted scientist Robert Boyle in 1661, meant the subject of the material principles of mixed bodies. In 1663, "chemistry" meant a scientific art, by which one learns to dissolve bodies, and draw from them the different substances on their composition, and how to unite them again, and exalt them to a higher perfection - this definition was used by chemist Christopher Glaser.
The 1730 definition of the word "chemistry", as used by George Ernst Stahl, meant the art of resolving mixed, compound, or aggregate bodies into their principles; and of composing such bodies from those principles. In 1837, Jean-Baptiste Dumas considered the word "chemistry" to refer to the science concerned with the laws and effects of molecular forces. This definition further evolved until, in 1947, it came to mean the science of substances: their structure, their properties, and the reactions that change them into other substances - a characterization accepted by Linus Pauling. More recently, in 1998, the definition of "chemistry" was broadened to mean the study of matter and the changes it undergoes, as phrased by Professor Raymond Chang.
