|
Why does carbon form compounds mainly by covalent bonding?
|
|
0
|
3579
|
October 20, 2016
|
|
What are homologous series of carbon compounds?
|
|
1
|
14860
|
October 20, 2016
|
|
Write the chemical equation representing the reaction of preparation of ethanol from ethane
|
|
0
|
2443
|
October 20, 2016
|
|
Name the product obtained when ethanol
|
|
1
|
4190
|
October 20, 2016
|
|
Give an example for esterification reaction
|
|
0
|
8540
|
October 20, 2016
|
|
Name the compound formed by heating ethanol at 443K with excess of conc. $H_{2}SO_{4}$
|
|
0
|
1860
|
October 20, 2016
|
|
A mixture of oxygen and ethyne is burnt for welding
|
|
1
|
2563
|
October 20, 2016
|
|
Name the product other than water formed on burning of ethanol in air
|
|
0
|
1552
|
October 20, 2016
|
|
Name the carboxylic acid used as a preservative
|
|
0
|
2502
|
October 20, 2016
|
|
Name the simplest hydrocarbon
|
|
0
|
839
|
October 20, 2016
|
|
How would you bring about the following conversions ? Name the process and write the reaction involved
|
|
1
|
4966
|
September 21, 2016
|
|
Look at figure and answer the following questions:
|
|
1
|
2041
|
September 21, 2016
|
|
A compound C , reacts with Na- metal to form a compound R and evolves a gas
|
|
1
|
4369
|
September 21, 2016
|
|
What are hydrocarbons ? Give examples
|
|
1
|
10049
|
September 21, 2016
|
|
What is the role of metal or reagents written on arrows in the given chemical reactions?
|
|
1
|
4882
|
September 21, 2016
|
|
Unsaturated hydrocarbons contain multiple bonds between the two C-atoms
|
|
1
|
3509
|
September 21, 2016
|
|
Catenation is the ability of an atom to form bonds with other atoms of the same element
|
|
1
|
4317
|
September 21, 2016
|
|
In electron dot structure, the valence shell electrons are represented by crosses or dots
|
|
1
|
3902
|
September 21, 2016
|
|
Carbon, Group (14) element in the Periodic Table
|
|
1
|
2511
|
September 21, 2016
|
|
Why is hard water not suitable for washing clothes with soap?
|
|
0
|
5977
|
September 21, 2016
|
|
An organic compound bums with a sooty flame
|
|
1
|
560
|
September 21, 2016
|
|
What are hydrocarbons?
|
|
1
|
676
|
September 21, 2016
|
|
What are soaps chemically?
|
|
1
|
2847
|
September 21, 2016
|
|
Identify the compounds A to E in the following reaction sequence :
|
|
1
|
6500
|
September 21, 2016
|
|
How is vinegar made?
|
|
1
|
3307
|
September 21, 2016
|
|
What is a homologous series?
|
|
0
|
1499
|
September 21, 2016
|
|
With the help of a diagram, explain cleansing action of soap
|
|
0
|
14099
|
September 21, 2016
|
|
Soaps cannot be used with hard water. Why?
|
|
1
|
3548
|
September 21, 2016
|
|
What is meant by isomers?
|
|
1
|
7185
|
September 21, 2016
|
|
What is vinegar ? State its one use
|
|
1
|
3550
|
September 21, 2016
|