AIEEE 2014 ExaminationWarning: include(../../120_60_others.php): Failed to open stream: No such file or directory in /home/cbseguess/public_html/aieee/papers/chemistry3.php on line 20 Warning: include(): Failed opening '../../120_60_others.php' for inclusion (include_path='.:/opt/cpanel/ea-php83/root/usr/share/pear') in /home/cbseguess/public_html/aieee/papers/chemistry3.php on line 20 |
All India Engineering / Architecture Entrance Examination (AIEEE) CBSE Guess > AIEEE > AIEEE Papers > 2007 > Chemistry AIEEE 2007 Chemistry Q. 12. Presence of a nitro group in a benzene ring
Sol: −NO2 group in benzene ring shows −I and −R effect, which deactivates the ring towards electrophilic substitution but activates it towards nucleophilic substitution. Correct choice: (4) Q. 13. In which of the following ionization processes, the bond order has increased and the magnetic behaviour has changed? Sol:
Sol: The actinoids exhibit more number of oxidation states than lanthanoids because they can loose more number of electrons as the 5f orbital electrons are held less strongly than the 4f orbital electrons. Correct choice: (4) Q. 15. Equal masses of methane and oxygen are mixed in an empty container at . The fraction of the total pressure exerted by oxygen is Sol: Let the mass of methane and oxygen be x g each.
|
Warning: include(../../120_60_others.php): Failed to open stream: No such file or directory in /home/cbseguess/public_html/aieee/papers/chemistry3.php on line 71 Warning: include(): Failed opening '../../120_60_others.php' for inclusion (include_path='.:/opt/cpanel/ea-php83/root/usr/share/pear') in /home/cbseguess/public_html/aieee/papers/chemistry3.php on line 71 |