GANAPATI UTSAV

From 22 August to 30 August 2009---G A N A P A T I---- U T S A V------

CHEMISTRY HISTORY--AUGUST 21

1] 1914-- Benajamin Thompson died.--British Physicist.--1] Cotributed to Thermodynamics--

--2] Determined method to measure specific heat.

--3] He related mechanical work with heat.

2] 1913-- Jean Servais Stas was born--Belgian chemist--He accuratly determine atomic weights of elements

CHEMISTRY HISTORY--AUGUST 20

1] 1936--Hideki Shirakawa was born.-Japanese chemist--Awarded Noble Prize in 2000 for discovery of conductive polymers.

2] 1917--Adolf van Baeyer died.--German organic chemist.--Awarded Noble Prize in 1905 for his work on organic dyes and hydroaromatic compounds.

3] 1779--Jons Jecob Berzelius was born--Swedish chemist--1] Created table of known elements on the basis of atomic weights.

--2] First to use chemical notation system in use today with symbols for elements and numbers to denote proportions. Today, subscript is used to denote proportion

whereas he used superscript.

--3] Credited discovery of Si, Se, Th and Ce

--4] He coined the terms--Catalysis, Polymer, Isomer and Allotrope

CHEMISTRY HISTORY--AUGUST 19

1] 1994--Linus Pauling died.--American chemist-

-- Research in chemical bonding-awarded Noble Prize in 1954.

--Awarded Noble Peace Prize in 1962.

--Introduced concept of Electronegativity.

2] 1765--Axel Fredrik Cronstedt died.--Swedish chemist - Discovered Nickel.

3] 1745--Johan Gottlieb Gahn was born--Swedish chemist-First isolated Manganese

CHEMISTRY HISTORY--AUGUST 18

1994-Richard Synge died.

He was English biochemist who shares the 1952 Nobel Prize in Chemistry with Martin for the invantion of partition chromatography.

1980- Elizabeth Shankman died.

She was Canadian pathologist who described the paths a healthy cell changes to cancerous cell.

PROUD OF INDIA

YES WE REMEMBER YOU -------"MADANLAL"

PROUD OF INDIA

MADAN LAL DHINGRA--[1883-1909]

Indian freedom fighter studying in England killed Curzon Wyllie on 1st July 1909

Dhingra fired five shots right at his face, four of which hit their target.

Dhingra was tried on 23rd July. He stated that he do not regret the killing of Curzon as he had played his role in order to set India free from the nonhuman British rule.

He was sentenced to death.After the judge's announcement---HE SAID----

"I am proud to have the honour to laying down my life for my country. But remember we shall have our time in the days to come. Poor in health and intellect, a son like myself has nothing else to offer to the mother but his own blood. And so I sacrificed the same. The only lesson required in India at present is to learn how to die, and the only way to teach it is by dying ourselves. My only Prayer to God is that I may be re-born of the same mother and I may RE-DIE in the same sacred cause till the cause is successful !!! VANDE MATARAM!!!"

------------------- AND HUNDRED YEARS BACK--------------------

----------DHINGRA WAS HANGED ON AUGUST 17, 1909----------------

------yes we remember you MADANLAL------------

TEST-54-XI-[mole concept]

Q.-6-

6 g of Mg completely reacted with dil. HCl at STP, the volume of hydrogen evolved is

[a] 22.4 lit. [b] 11.2 lit. [c] 5.6 lit. [d] 2.0 lit.

Q.-7-

The vapour density of certain gas X is 4 times that of Y. The molecular mass of X is M , the molecular mass of Y is

[a] 4 M [b] 0.5 M [c] 0.25 M [d] 0.33 M

TEST-54-XI-[mole concept]

Q.-4-

The number of moles of carbon dioxide which contain 8 g of oxygen

[a] 0.5 mol [b] 0.2 mol [c] 0.4 mol [d] 0.25 mol

Q.-5-

The number of atoms present in0.5 g-atoms of nitrogen is same as the atoms in

[a] 12 g of carbon [b] 32 g of sulphur [c] 8 g of oxygen [d] 24 g of magnesium.

VANDE MATARAM!!!

Jayostute Jayostute Shree Mahanmagale Shivaspade Shubhade

Swatantrate Bhagavati Tvamaham Yasho Yutam Vande!

Yasho Yutam Vande!!!

Hans Christian Orsted's Birthday

He was Danish Physicist and chemist who is best known for discovering that electric currents can create magnetic fields, which is an important part of electromagnetism.

In 1825 He was the first to isolate Aluminium from AlCl₃

[ 14 august 1777-9 March 1851]

AKHAND BHARAT

AKHAND BHARATACHA VIJAY ASO!!!!!

TEST--54--XII [hydroxy-]

Q1.

Red precipitate with Fehling solution is given by

[a] CH₃OH

[b] HCHO

[c] CH₃COOH

[d] CH₃COCH₃

TEST-54-XI-[mole concept]

Q.3-

Which of the following contains maximum number of atoms?

[a] 2.0 g hydrogen

[b] 2.0 g oxygen

[c] 2.0 g nitrogen

[d] 2.0 g methane

Swine Flu

The virus has componts of pig and bird influenza viruses in it , so that humans do not have any immunity to it.That's why it has ability to cause global out-break.

TAKE CARE!!!

Can Swine flu be prevented

1] Cover your nose and mouth when coughing and sneezing with handkerchief.

2]Wash your hands regularly with soap.

3]Wear Face-mask.

4] Keep away from others.

5] Drink clear fluids.

Swine Flu

How does it spread?

The new swine flu virus is highly contagious i.e. it spreads from person to person.

Now mind well my freinds during GANPATI festival Mumbai-Pune "Chakaramani" come down to konkan. Chakaramani can spread the virus ----keep safe distance from them.

CRYING of "FAT MAN"

Another BLACK DAY in the field of nuclear CHEMISTRY.

Nagasaki in Japan was devastated when an atomic bomb, "FAT MAN" was dropped by ' usa'

80000 people were killed instantly

CHESS

Learn to play CHESS.

That helps in studying CHEMISTRY.

lord Macaulay's MUD

It is difficult to come out of MUD.

Those who TRY to come out, SINK in the MUD.

Only LOTUS (KAMAL) comes out smoothly.

Try to develop a technique like KAMAL.

BE KAMAL!!!!

WEEPING of LITTLE BOY

The nuclear weapon 'LITTLE BOY' was dropped on the city of Hiroshima,Japan on Monday 6th August 1945 by United States of America.

The bomb killed as many as 140000 people in Hiroshima.

Amongst these, 15-20% died from injuries or the combined effects of flash burns, trauma and radiation burns, compounded by illness, malnutrition and radiation sickness.Since then more have died from leukemia and solid cancers attributed to exposure to radiations released by the bomb.

"BLACL DAY IN NUCLEAR CHEMISTRY"

TEST--54--XII [Thermo-]

Q.11.-

0.2 g-eq of NaOH is neutralised by 0.1 mol of sulphuric acid, heat evolved is

[a] 23.14 kJ [b] 23.14 kcal [c] 11.47 kJ [d] 11.47 kcal

TEST--54--XI [state of matter]

Q.2.

The vapour density of pure ozone is

[a] 16 [b] 24 [c] 32 [d] 48

YASHA MANTRA-----15 F>S>6

TIP--15

MENTALITY + PRECISENESS =SUCCESS

lord Macaulay's MUD

The more that the animal trapped in the MUD struggles, more the structure of colloidal MUD is changed into sol and FASTER the ANIMAL will SINK.

TEST--54--XI [state of matter]

Q-1-

Mass of 112 ml nitrogen at STP will be

[a] 0.28 g [b] 28 g [c] 14 g [d] 0.14 g

TEST--54--XII [halo-]

Q-10

In addition of HBr to but-2-ene which of the following is true?

[a] Markownikoff's rule is observed

[b] abnormal addition takes place in presence of peroxide

[c] normal & abnormal addition give different isomers.

[d] In any case the product is same.

Formula ( MANTRA) of SUCCESS (YASHA)--TIP--14--F>S>5

TIP-14-

SPEED + REPRESENTATION = SUCCESS.

Lord Macaulay's MUD

What lord Macaulay said about INDIA in BRITISH parliament on 2nd FEB.1835

"I have travelled across the length and breadth of India and I have not seen who is a begger, who is thief,such wealth I have seen in this country,such high moral values,people of such calibre that I do not think we would ever conquer this countary unless we break the backbone of this nation which is spiritual and cultural heritage and, therefore, I propose that we replace her old and ancient education system,her culture for if the Indians think that ALL that is FOREIGN & ENGLISH is good and greater than their own, they will lose their self esteem, their native culture and they will become WHAT WE WANT THEM TRUELY DOMINATED NATION."

The above statement is available on multiple websites.

Formula ( MANTRA) of SUCCESS (YASHA)--TIP--13--F>S>4

TIP-13

PRIORITY + TIME MANAGEMENT = SUCCESS

The BLOG is for the STUDENTS and TEACHERS who LOVES CHEMISTRY

Formula of SUCCESS--TIP--12--F>S>3

HARD WORK + IMAGINATION = SUCCESS

TEST--54--

Q--9--

Only two isomeric monochloro derivatives are possible from-

[a] 2-methylpentane [b] 2,4-dimethylpentane

[c] 2-methylbutane [d] 2-methylpropane