Chemistry-
General
Easy
Question
The hydrogen bond is an electrostatic attractive force between covalently bonded hydrogen atom of one molecule and an electronegative atom like (F, 0, N) of other molecule. Hydrogen bond is nearly an electrostatic attractive force and not a normal chemical bond. It is very weak (2-10kcal/mol) as compared to a covalent bond (strength 50-100kcal/mol). In intramolecular hydrogen bonding, the two or more than two molecules of the same or different substances are linked to form polymeric aggregate. Intermolecular hydrogen bonding increases the boiling point of the compound and also its solubility in water. Intramolecular hydrogen bonding occurs within two atoms of the same molecule. Intramolecular hydrogen bonding is also called chelation, since it. involves· . ring formation. Intramolecular hydrogen bonding decreases the boiling point of the compound and also its solubility in water. Which of the following compounds is (are) stablised by intramolecular hydrogen bonding?
The correct answer is:
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The correct decreasing order of stability of I, II and III carbocations is
I) 
II) 
III) 
The correct decreasing order of stability of I, II and III carbocations is
I)
II)
III)
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Two molecules indicated below are capable to intramolecular H-bonding. Which is likely to form more stable hydrogen bonds?
I) 
II) 
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I)
II)
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C
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Number of
and 
bonds in C6H5COOH is:
Number of and bonds in C6H5COOH is:
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Consider the following compounds:
A) chloroethene
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C) buta-l,3-diene
D) 1,3,5-hexatriene
All the carbon atoms are Sp2 -hybridized in:
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A) chloroethene
B) benzene
C) buta-l,3-diene
D) 1,3,5-hexatriene
All the carbon atoms are Sp2 -hybridized in:
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In the compound 
the 
bond is of the type:
In the compound the bond is of the type:
Chemistry-General
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Anthracene is purified by:
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Steam distillation is applied to those organic compounds which are steam volatile and:
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Latest technique for purification, isolation and separation of organic compounds is:
Latest technique for purification, isolation and separation of organic compounds is:
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i) toluene
ii) m-dichloro benzene
iii) o-dichloro benzene
iv) p-dichloro benzene
Chemistry-General
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The maximum possible number of hydrogen bonds, a water molecule can form is:
The maximum possible number of hydrogen bonds, a water molecule can form is:
Chemistry-General
