Home
FREE Trial
Login
Search Result
19
Record(s) found!
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Importance and Snapshot of Organic Chemistry - Study ref# 683
Introduction: The element carbon has unique property called catenation due to which it forms covalent bonds with other carbon atoms. It also forms covalent bonds with atoms of other elements like hydrogen, oxygen, nitrogen, Sulphur, ph...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Importance and Snapshot of Organic Chemistry - Study ref# 684
Following sections must be covered to understand Organic Chemistry: 1. General Introduction 2. Tetravalence of Carbon : Shapes of Organic Compounds 3. Structural Representations of Organic Compounds 4. Classification of Organic ...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Target Setup for Organic Chemistry - Study ref# 685
Student requires to achieve the following milestones to get better grip over Organic Chemistry. The milestones / targets are as follows:-Starting Point: Days 0Test TypeAppear on TestTarget TestsScorePractice Test000%Chapter Test000%Su...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5353
Which of the two :
or is expected to be more stable and why? Hint – Stability of a carbanion increases in the presence of electron withdrawing group but decreases in the presence of el...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5354
Explain why alkyl groups act as electron donors when attached to a π-system? Answer: Due to hyperconjungation, alkyl groups act as electron donors when attached to a π – system as shown below. ...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5355
What are electrophiles and nucleophiles ? Explain with examples. Answer: 1.Electrophiles The neutral or positively charged species with deficiency of electrons and capability of accepting a pair of electrons (Lewis acid) are called electrop...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5356
Classify the following reactions in one of the reaction type studied in this unit. (a) (b) (c) (d) Hints- (a) A nucleophile
is substituted by other nucleophile (b)...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5357
Give a brief description of the principles of the following technique taking an example in each case: Crystallisation Answer: Crytallisation It involves conversion of an impure compound into its pure crystals. It is based on the...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5358
Give a brief description of the principles of the following technique taking an example in each case: Distillation Answer: Distillation It involves the process of heating a liquid to convert it into the vapours and condensing the vapours...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5359
Give a brief description of the principles of the following technique taking an example in each case: Chromatography Answer: Chromatography It is a technique for the separation , purification and identification of the constituents of ...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5360
Describe the method, which can be used to separate two compounds with different solubilities in a solvent S. Answer: Two compounds with different solubilities in a solvent S can be separated by fractional crystallization. When a hot saturated s...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5361
What is the difference between distillation , distillation under reduced pressure and steam distillation ? Hints- Discuss on the basis of boiling points of different substances. Answer: Distillation involves the process of heating a liquid ...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5362
Explain the principle of paper chromatography. Answer: Paper chromatography is a type of partition chromatography. It is based on the principle of partition, i.e., it is based upon continuous differential partitioning or distribution of the var...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5363
Why is nitric acid added to sodium extract before adding silver nitrate for testing halogens ? Answer: Sodium extract is boiled with nitric acid to decomposed and , if present.
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5364
Explain the reason for the fusion of an organic compound with metallic sodium for testing nitrogen, sulphur and halogens. Answer: Nitrogen, Sulphur and halogens are present in an organic compound in covalent form so their detection is not easy....
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5365
Name a suitable technique of separation of the components from a mixture of calcium sulphate and camphor. Hints – Camphor is a sublimate with is not. A sublimate from a non-sublimate is separated by sublimation. Answer: A mixture ...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5366
0.3780 g of an organic chloro compound gave 0.5740g of silver chloride in Carius estimation. Calculate the percentage of chlorine present in the compound. Answer: The mass of the organic compound taken = 0.3780 g Mass of formed = 0.5740...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5367
Show the polarization of carbon-magnesium bond in the following structure. Answer: Carbon is more electronegative than magnesium therefore ,Mg acquires a partial positive charge and carbon acquires a partial negative charge. ...
read more
JEE-Main - Grade 11 - Chemistry - Organic Chemistry - Some Basic Principles and Techniques - Study ref# 5368
Why does act as an electrophile? Answer: Three highly electronegative oxygen atoms are attached to sulphur atom. It makes sulphur atom electron deficient. Further, due to resonance, sulphur acquires positive charge. Both these factors, mak...
read more
Search
Check your desired chapters availability
Select Course
JEE Main
NEET
Type your query
Search
Sample Test
New Student? Sign Up
Log In