WE ARE FRIEND

Monday, 15 December 2014

ভালোবাসা

যারা ভালোবাসা কে শ্রদ্ধা করে
তারা কখনো সত্যিকারের
ভালোবাসা পায় না !!!
আর
যারা মনে করে ভালোবাসা হচ্ছে
টাইম পাস
তারা সত্যিকারের ভালোবাসা পায়,
সেটা তারা শ্রদ্ধা করেনা,

Sunday, 9 November 2014

karon ta ki sotti kore bool too .................bangali ak laphe engrez babu hohe galo.......age cupi cupi lovers zone e kiss korto akhon rastai
ki je din aslo .................hai upor oula mai tuni 1000 bosor baste dou....amer onek dakher baki ache
my suggestion please go to following place and do this ..please

http://www.newlatesttips.info/…/lovers-zo

ne-in-kolkata-goo…/

kiss Jadavpur University
kiss Jadavpur University
kiss in Jadavpur University
kiss at Jadavpur University
kiss+Jadavpur+University

kiss kiss

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much love
nayu

WE ARE FRIEND
Mudassar Husain

Thursday, 7 August 2014

Flame test

Description: Small amounts of different salts are burned in the flame of a Bunsen burner. Sodium burns orange, potassium - purple/blue, barium - green, and lithium – red

Concept: When an element is burned, the electrons will be excited. Then as these electrons fall back from one energy level to another, they will emit photons of light. These photons will have different colors depending on the element and its discrete energy levels. That is, different wavelengths of light (colors) will be emitted when the electrons of different elements go down the step(s) between their energy level(s). Each element will have its own set of steps, therefore each will have its own color.

Procedure:

Dip the wire loop of a glass rod into the water/con.HCI

Use this wet loop to pick up some salt.

Hold the salt in the flame and burn to show color.

Do the same for all salts, being sure to use a different glass rod-with-wire loop

for each salt. Also be careful not to drop any salt onto the Bunsen burner.

Clean-up: Be sure to turn the gas off if you use a Bunsen burner. In rm. 122 you will need to have Alice open the cupboard to get to the gas valve. Wash wire loops well to

ensure all salt is removed. Clean off any salt that might have dropped onto the Bunsen burner or propane torch.

Flame Test Colors

Li⁺                                        Deep red (crimson)

Na⁺                                       Yellow

K⁺                                         Violet

Ca²⁺                                      Orange-red

Sr²⁺                                      Red

Ba²⁺                                      Green

Cu²⁺                                     Blue-green

Cu¹⁺ Green

Cu²⁺ Blue

Fe Yellow to red-orange (depending on anion and charge of Fe); in
rare cases, can form complex ion with a deep blue color

Fe²⁺ yellow-green (depending on the anion)

Fe³⁺ orange-red (depending on the anion)

Co²⁺ Pink

Cr³⁺ Violet to Green

Ni²⁺ Green

Mn²⁺ Pink

Pb³⁺ blue-green (Pb²⁺ and Pb⁴⁺ are colorless)

V²⁺ violet

V³⁺ blue-green

MnO₄^- Purple (Mn w/ +7 oxidation state is purple)

CrO₄^2- Yellow

Cr₂O₇^2- Orange

Cu(NH₃)₄²⁺ Dark Blue; produced when ammonia is added to Cu²⁺ solutions

FeSCN²⁺ Red-brown, Wine-red to dark orange

CoCl₄^2- Blue (Co²⁺ with HCl will form a CoCl₄^2- complex that is blue)

Ti(H₂O)₆³⁺ Purple

me in NTTC

In my B.Ed student life me with my sir , mam , and my friends.......

Happy birthday to Apabrita Bhattacharya

happy birthday to your 19 years 0 months 0 days
or 228 months 0 days
or 991 weeks 3 days
or 6,940 days
or 166,560 hours
or 9,993,600 minutes
or 599,616,000 seconds..........................

Friday, 16 May 2014

http://www.isitdownrightnow.com/

"Is It Down Right Now" monitors the status of your favorite web sites and checks whether they are down or not. Check a website status easily by using the below test tool. Just enter the url and a fresh site status test will be perfomed on the domain name in real time using our online website checker tool. For detailed information, check response time graph and user comments.

Enter a domain below to check whether it is down or not...

Photo Pack: Schools

http://schools.surfaidinternational.org/photopacks/schools

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