|
In a experiment to study the properties of ethanoic acid, a student takes about 3 mL of ethanoic acid in a dry test tube
|
|
1
|
797
|
March 30, 2019
|
|
State the reason why carbon can neither form C4+ cations nor C4- anions but forms covalent compounds:
|
|
1
|
11859
|
March 30, 2019
|
|
List in tabular form three physical and two chemical properties on the basis of which ethanol and ethanoic acid can be differentiated
|
|
1
|
1761
|
March 30, 2019
|
|
Name the functional group of organic compounds that can be hydrogenated with the help of suitable examples
|
|
1
|
1767
|
March 30, 2019
|
|
What happens when (Write chemical equation in each case) 1. ethanol is burnt in air?
|
|
1
|
1190
|
March 30, 2019
|
|
Distinguish between esterification and saponification reactions with the help of the chemical equations for each. State one use of each
|
|
1
|
1415
|
March 30, 2019
|
|
(a) Give a chemical test to distinguish between saturated and unsaturated hydrocarbons
|
|
1
|
1842
|
March 30, 2019
|
|
When ethanol reacts with ethanoic acid in the presence of Cone H2SO4, a substance with fruity smell is produced, answer the following:
|
|
1
|
656
|
March 30, 2019
|
|
Write the molecular formula of the following compounds and draw their electromdot structures:
|
|
1
|
933
|
March 30, 2019
|
|
What is meant by functional group in carbon compounds? Write in tabular form the structural formula and the functional group present in the following compounds
|
|
1
|
2497
|
March 30, 2019
|
|
Draw the electron-dot structure for ethyne.' A mixture of ethyne and oxygen is burnt for welding
|
|
1
|
1996
|
March 30, 2019
|
|
When you add sodium hydrogen carbonate to acetic acid in a test tube, a gas liberates immediately with a brisk effervescence
|
|
1
|
760
|
March 30, 2019
|
|
What is meant by homologous series of carbon compounds? Classify the following carbon compounds into two homologous series and name them
|
|
1
|
1687
|
March 30, 2019
|
|
List two observations which you make when you add a pinch of sodium hydrogen carbonate to acetic acid in a test tube
|
|
1
|
734
|
March 30, 2019
|
|
Write the name and structural formula of the compound obtained when ethanol is heated at 443k with excess of cone. H2SO4
|
|
1
|
703
|
March 30, 2019
|
|
What is meant by isomers? Draw the structure of two isomers of butane C4H10. Explain why we cannot have isomers of first three members of alkane series
|
|
1
|
4077
|
March 30, 2019
|
|
What is the difference between the molecules of soaps and detergents, chemically? Explain the cleansing action of soaps
|
|
1
|
5964
|
March 30, 2019
|
|
With the help of an example, explain the process of hydrogenation
|
|
1
|
1073
|
March 30, 2019
|
|
Write the respective chemical equations to show what happens when: (i) Methane is burned in presence of oxygen?
|
|
1
|
801
|
March 30, 2019
|
|
Write the chemical equations to show what happens when
|
|
1
|
638
|
March 30, 2019
|
|
What is meant by homologous series of carbon compounds? Write the general formula of (i) alkenes, and (ii) alkynes
|
|
1
|
1594
|
March 30, 2019
|
|
Define the term ‘structural’ isomerism’. Explain why propane cannot exhibit this property. Draw the structure of possible isomers of butane, C4H10
|
|
1
|
917
|
March 30, 2019
|
|
Elements forming ionic compounds attain noble gas configuration by either gaining or losing electrons from their outermost shells
|
|
1
|
715
|
March 30, 2019
|
|
Write the name and general formula of a chain of hydrocarbons in which, an addition reaction with hydrogen can take place
|
|
1
|
1353
|
March 30, 2019
|
|
State the meaning of functional group in a carbon compound. Write the functional group and strufcture present in
|
|
1
|
670
|
March 30, 2019
|
|
(a) Differentiate between alkanes and alkenes. Name and draw the structure of one member of each
|
|
1
|
2338
|
March 30, 2019
|
|
Name the oxidizing agent used for the conversion of ethanol to ethanoic acid. Distinguish between ethanol and ethanoic acid on the basis of
|
|
1
|
873
|
March 30, 2019
|
|
Complete the following equations:
|
|
1
|
581
|
March 30, 2019
|
|
Explain isomerism, state any four characteristics of isomers. Draw the structure of possible isomers of butane, C4H10
|
|
1
|
13685
|
March 30, 2019
|
|
1. What is a homologous series of substances?
|
|
1
|
1729
|
March 30, 2019
|