Reaction of alcohol, with a carboxylic acid is known as
1 Substitution Reaction
2 Addition reaction
3 Esterification
4 Hydrogenation
why is ohms law not followed in long transmisson lines
When was the first rocket launched from thumba?
What is the Nutrition ?
Soap is a mixture of sodium or potassium salts of 1 Monocarboxylic acids 2 Glycerol’s 3 Dicarboxylic acids 4 Tricarboxylic acids
The recent atomic weight scale is based on 1 1H1 2 1H2 3 6C12 4 8O16
Difference between Respiration and Photosynthesis ?
Bleaching powder is made from 1 Sulphur dioxide and gypsum 2 Chlorine and charcoal 3 Soda ash and lilme 4 Lime and chlorine
difference between typewriter and computer?
In fireworks, the green flame is produced because of 1 Mercury 2 Sodium 3 Potassium 4 Barium
What is the speed of arihant?
Two or more forms of a chemical element having different physical properties but rising to identical chemical compounds are called 1 Allotropes 2 Isotopes 3 Isomers 4 Isotones
the basic approach to science was established by: