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How me learn organic chemistry? - Computers & Internet

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Try this site is has tutorials and practice tests

http://www.chemhelper.com/

Posted on Jan 03, 2009

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What type of engine coolant do i use for a 2008 dodge grand caravan?


It calls for a HOAT type coolant...Zerex g05 is the original full chemistry in newer Ford & Daimler Chrysler vehicles. Its Hybrid Organic Acid Technology (HOAT) chemistry combines the best of conventional and organic acid-based chemistry to provide the ultimate protection against rust and corrosion. It's orange in color. Can be purchased at most auto parts retailers

Jul 15, 2014 | 2008 Dodge Grand Caravan

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IITJEE 2011 FULL SOLUTIONS


Download the full solutions of IITJEE 2011 from below given links.

IITJEE 2011 FULL SOLUTIONS PAPER 1

IITJEE 2011 FULL SOLUTIONS PAPER 2



IIT-JEE 2011 AnalysisIIT JEE 2011 was conducted on 10th April 2011 in 131 cities all over India in 1051 centres for 4,85,262 registered candidates. For the first time, JEE has announced that scanned images of the Optical Response Sheets (ORS) with the candidates' details and their responses (answers) will be displayed on the JEE website after 25th May 2011. Answer Keys to JEE 2011 questions will be displayed on the JEE website on 15th May 2011 after completing the evaluation of OMR Sheets.
There were 10 versions for IIT-JEE 2011 - 0 to 9. The order of subjects in both papers were the same - Chemistry, Mathematics and Physics but the total marks, the number of questions and types of questions in both papers were distinct from each other.
Paper-1Paper1 had 69 questions in total for 240 marks - in the order of Chemistry, Physics and Mathematics. Each subject had 23 questions and the pattern was exactly the same for all the subjects.
Chemistry
This is a moderate level paper leaning more towards easy level of difficulty. The usual weightage of Physical > Organic > Inorganic Chemistry is maintained. Most of the questions in this paper evaluate the conceptual clarity of the student.
Physics
Overall the difficulty level of the paper was moderate. Still there were a few numerical questions involving elaborate mathematical calculations making them time consuming and hence difficult. No representation of Optics in this paper. Major focus in this paper was on Mechanics (for a total marks of 31)
Mathematics
Mathematics part of the 2011 JEE paper 1 was considered easier than the paper 1 of 2010. Few questions in Integer answer type require in-depth understanding of the concepts with perseverance in solving problems. Trigonometry had a good representation in the paper; the passage on matrices required quick thinking to interpret and solve the questions. One question about '3 x 3 non-singular skew symmetric matrices' has a basic flaw since odd ordered skew symmetric matrices are always singular. Paper 1 was a moderately difficult paper.
Pattern of Paper-1:
  • Q.No.1 to 7 - Single Correct Choice Type (7 questions for 21 marks). +3 for correct answer and -1 for wrong answer
  • Q.No. 8 to 11 - Multiple Correct Choice Type (4 questions for 16 marks). +4 for correct answer with NO negatives
  • Q.No. 12 to 16 - Paragraph Type(5 questions for 15 marks). There were 2 paragraphs- one paragraph with 2 questions and the second one with 3 questions. All questions were of Single Correct Choice Type. +3 for correct answer and -1 for wrong answer
  • Q.No.17 to 23- Integer Type (7 questions for 28 marks). Answers were of single digit (ie, 0 to 9) . +4 for correct answer with NO negatives.
Instructions for the exam was given in the front sheet itself and only 2 pages were provided for rough work. Among the subjects, students felt that Mathematics was a bit tough while Chemistry was easier.
Paper-2Paper 2 had 60 questions in total - in the order of Chemistry, Physics and Mathematics. Each subject had 20 questions and as in paper 1 the pattern was exactly the same across the subjects. Questions had differential markings, each subject had 80 marks and the maximum mark for the paper was 240.
Chemistry
Paper 2 of IIT-JEE 2011 was difficult compared to paper 1. Weightage wise the Physical > Organic > Inorganic formula is maintained. Generally the nature of the questions in Physical chemistry is calculation oriented and hence the difficulty. Also complexity of Organic questions made this paper a challenging one.
Physics
Questions from certain areas which were not represented in paper 1 (gravitation, optics etc.) appeared in paper 2 thus balancing the Syllabus coverage. The difficulty level of this paper was slightly less than paper 1 especially the Integer Answer Type.
Mathematics
Paper 2 Mathematics part was tougher than the first paper - for the complexity in combining topic areas, for e.g. the matrix match had questions from 4 different areas posing a challenge for the student in the exam hall. Likewise, this paper required more calculations in solving than the first paper. Overall Mathematics part of IIT-JEE 2011 was less difficuly and less time consuming than that of 2010. The second paper was restricted to lesser number of areas, for e.g. there were no questions from Trigonometry. But this time Differential Calculus and Coordinate Geometry were well
represented.
Pattern of Paper 2:
  • Q.No.1 to 8 - Single Correct Choice Type (8 questions for 24 marks). +3 for correct answer and -1 for wrong answer
  • Q.No. 9 to 12 - Multiple Correct Choice Type (4 questions for 16 marks). +4 for correct answer with NO negatives. There was NO partical marking as well.
  • Q.No. 13 to 18 - Integer Type (6 questions for 24 marks). Answers were of single digit (ie, 0 to 9) . +4 for correct answer with NO negatives.
  • Q.No.19 & 20- Matrix Match Type (2 questions with 4 rows each - for 16 marks). There were 4 elements in the first column to be matched with 5 elements in the second column. Each row carried 2 marks. There were NO negarive marking.
Chemistry section in Paper2 was difficult compared to Paper1. Mathematics and Physics sections were only moderately difficult.
Courtesy: TIME

on Apr 11, 2011 | Computers & Internet

1 Answer

Can anybody tell me about chemical synthisis? or a good reference website for information.


I suggest you take an introductory book on organic chemistry with a chapter or two on organic synthesis.
You also visit Wikipedia using the keyword organic synthesis.
Here is a link to a university website on the subject. I am not qualified to say if it is good or not: I would have to read myself to make an opinion.

https://www2.chemistry.msu.edu/faculty/reusch/virttxtjml/synth2.htm

Nov 06, 2013 | Computers & Internet

1 Answer

Define biology


You can find a nice definition here: http://en.wikipedia.org/wiki/Biology

According to bing's dictionary:
1. science of life: the science that deals with all forms of life, including their classification, physiology, chemistry, and interactions 2. life in one place: the forms of life in a particular environment and their behavior, development, and history "the biology of desert regions" 3. particular organism's makeup: the structure and functioning of a particular organism "the biology of the fruit fly" [ Early 19th century. Via French Biologie bios "life" ] link: http://www.bing.com/Dictionary/search?q=define+biology&qpvt=define+biology&FORM=DTPDIA

Jun 10, 2011 | Computers & Internet

1 Answer

I am trying to use this calculator to do Organic chemistry and general chemistry problems which involve very large numbers and very small numbers or various numbers to both negative and positive...


Make sure you use the (-) key in the left column above the RCL key to enter negative exponents, not the - key which subtracts.

Do get all results in decimal instead of fraction notation, press SHIFT [SETUP] 2 to select LineIO mode.

Sep 12, 2010 | Casio FX-115ES Scientific Calculator

3 Answers

I'm a medic student. Are there any medical apps for students which may assist me during my studies?


Sure. Number of apps are available. First one is MedRef-his easy-to-use medical reference application is ideal for medical students and residents. It includes normal lab values, how to write service notes, and additional reference material that is useful while on the wards and in clinic. vosts $0.99.
MCAT Prep Chemistry

Sep 06, 2010 | iPhone Apps

2 Answers

Why is it necessary study chemistry?


Hi,
Chemistry is very important although it may not be something immediately important in your life.
The knowledge you gain slowly through school and university is amazing.
Without knowing chemistry you may not know what those chemicals listed in the ingredients in your food are. You may in the future mix house hold chemicals and get something dangerous, this has happened in the past, and when it does happen you wouldn't know how to best protect yourself.
Chemistry works hand in hand with everything from biology to what your using in your house, everything including plastics (organic chemistry).

Once again the chances of you using something like hybridization is everyday life is very unlikely however the little things you learn can help immensely.
Thanks for using Fixya.
Rating the solution is highly appreciated

Jun 16, 2010 | MPS Multimedia QuickStudy Chemistry for PC

1 Answer

What is science?


science is the well organized intelligence about every thing .

Apr 28, 2010 | MPS Multimedia QuickStudy Chemistry for PC

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