Hey Friends,
Team Attano runs a website which offers a collection of free videos for the students to enhance their knowledge on various topics. This is really interesting and its absolutely free. Please check this site.
URL: http://www.attanolearn.com/excel/index.jsf
Friday, December 17, 2010
Problem - A day (16/12/2010) - Chemistry
A drop of a Solution (Volume = 0.05 ml) contains 6 x 10^-7 moles of hydrogen ion concentration. If the rate of disappearance of the ion is 6 x 10^5 mol/L s, and if it takes x x 10^-8 seconds for the ion to disappear, Find the value of x. (Type: Sitter)
Answer: Vol. = 0.05 ml = 5 x 10^-5 L
Concentration of Hydrogen ion = (6 x 10^-7)/(5 x 10^-5)
= (6 x 10^-2)/5 mol / L
Rate = Conc. / Time
6 x 10^5 = (6 x 10^-2) / (5 x x x 10^-8)
On solving this equation we get x = 2
Hence the value of x is 2
Answer: Vol. = 0.05 ml = 5 x 10^-5 L
Concentration of Hydrogen ion = (6 x 10^-7)/(5 x 10^-5)
= (6 x 10^-2)/5 mol / L
Rate = Conc. / Time
6 x 10^5 = (6 x 10^-2) / (5 x x x 10^-8)
On solving this equation we get x = 2
Hence the value of x is 2
Thursday, December 16, 2010
Books Recommended for IITJEE and AIEEE preparation
There are wide range of books for IITJEE and AIEEE. But few are really extra-ordinary and help us to get a detailed knowledge of various concepts. Let me mention a Few in this Blog:
- Tata McGraw Hills - IIT Physics
- Tata McGraw Hills - IIT Chemistry
- Tata McGraw Hills - IIT Maths
- Tata McGraw Hills - Physics for AIEEE
- Tata McGraw Hills - Chemistry for AIEEE
- Tata McGraw Hills - Mathematics for AIEEE
- MTG - PCM Magazines
- H.C Verma's Concept Of Physics Vol-I and Vol-II
- Iradov's General Problems in Physics
- R.P Feynman lectures on Physics Vol-I and Vol-II
- NCERT Chemistry - XI and XII
FIITJEE - FTRE Talent Exam
Hi,
This is an announcement for students presently in V - XI std. FIITJEE - a renowned IIT coaching institute is conducting a Scholarship Exam. It mainly concentrates on Science (Physics, Chemistry, Biology) and Mathematics. This is a golden opportunity to show your talents.
Those who wish to participate in it visit the following website:
http://fiitjee-ftre.com/
Note: The last date for registration is : 23.12.2010
All the Best Friends...
This is an announcement for students presently in V - XI std. FIITJEE - a renowned IIT coaching institute is conducting a Scholarship Exam. It mainly concentrates on Science (Physics, Chemistry, Biology) and Mathematics. This is a golden opportunity to show your talents.
Those who wish to participate in it visit the following website:
http://fiitjee-ftre.com/
Note: The last date for registration is : 23.12.2010
All the Best Friends...
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