|
In a experiment to study the properties of ethanoic acid, a student takes about 3 mL of ethanoic acid in a dry test tube
|
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1
|
539
|
March 30, 2019
|
|
State the reason why carbon can neither form C4+ cations nor C4- anions but forms covalent compounds:
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1
|
5656
|
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
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1
|
699
|
March 30, 2019
|
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Name the functional group of organic compounds that can be hydrogenated with the help of suitable examples
|
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1
|
787
|
March 30, 2019
|
|
What happens when (Write chemical equation in each case) 1. ethanol is burnt in air?
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1
|
625
|
March 30, 2019
|
|
Distinguish between esterification and saponification reactions with the help of the chemical equations for each. State one use of each
|
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1
|
849
|
March 30, 2019
|
|
(a) Give a chemical test to distinguish between saturated and unsaturated hydrocarbons
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1
|
1196
|
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:
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|
1
|
407
|
March 30, 2019
|
|
Write the molecular formula of the following compounds and draw their electromdot structures:
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1
|
374
|
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
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|
1
|
621
|
March 30, 2019
|
|
Draw the electron-dot structure for ethyne.' A mixture of ethyne and oxygen is burnt for welding
|
|
1
|
543
|
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
|
505
|
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
|
703
|
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
|
448
|
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
|
444
|
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
|
1052
|
March 30, 2019
|
|
What is the difference between the molecules of soaps and detergents, chemically? Explain the cleansing action of soaps
|
|
1
|
2167
|
March 30, 2019
|
|
With the help of an example, explain the process of hydrogenation
|
|
1
|
622
|
March 30, 2019
|
|
Write the respective chemical equations to show what happens when: (i) Methane is burned in presence of oxygen?
|
|
1
|
421
|
March 30, 2019
|
|
Write the chemical equations to show what happens when
|
|
1
|
355
|
March 30, 2019
|
|
What is meant by homologous series of carbon compounds? Write the general formula of (i) alkenes, and (ii) alkynes
|
|
1
|
543
|
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
|
464
|
March 30, 2019
|
|
Elements forming ionic compounds attain noble gas configuration by either gaining or losing electrons from their outermost shells
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|
1
|
396
|
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
|
734
|
March 30, 2019
|
|
State the meaning of functional group in a carbon compound. Write the functional group and strufcture present in
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|
1
|
395
|
March 30, 2019
|
|
(a) Differentiate between alkanes and alkenes. Name and draw the structure of one member of each
|
|
1
|
1007
|
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
|
548
|
March 30, 2019
|
|
Complete the following equations:
|
|
1
|
321
|
March 30, 2019
|
|
Explain isomerism, state any four characteristics of isomers. Draw the structure of possible isomers of butane, C4H10
|
|
1
|
5209
|
March 30, 2019
|
|
1. What is a homologous series of substances?
|
|
1
|
681
|
March 30, 2019
|
