03:21

Calculate the potential of hydrogen electrode in contact with a solution whose pH is 10.

48:30

Chapter 1- Chemical Reactions and Equations in One Shot| Class 10 Science NCERT Explanation

01:20

Barium Chloride Test for Sulphate Ion #chemistrypracticals #saltanalysis

17:33

Quantum Number explained by Pankaj Singh | #structureofatom

32:36

CBSE Chemistry Board Exam Paper 2024 - Solutions

14:47

SN1 and SN2 mechanism Explained in Detail with examples.

02:00

Ethylamine is soluble in water whereas aniline is not. Explain. #amine #hydrogenbond

02:02

Aniline does not undergo Friedel-Crafts reaction. Why? #amine #organicchemistry #ncertsolutions

01:52

Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide. Explain

03:46

Aniline on nitration gives a substantial amount of m-nitroaniline. Why?

03:19

pKb of aniline is more than that of methylamine. Why?

04:13

Arrange: Ethanal, Propanal, Propanone, Butanone. Benzaldehyde, p-Tolualdehyde, p-Nitrobenzaldehyde,

03:03

When 3-methylbutan-2-ol is treated with HBr, the following reaction takes place: Give a mechanism fo

04:43

What is Steric Hindrance ?

04:19

Preparation of ethers by acid dehydration of secondary or tertiary alcohols is not a suitable method

03:34

alkoxy group activates benzene ring towards electrophilic substitution & it directs the incoming su

02:28

During the preparation of esters he water or the ester should be removed as soon as it is formed.

02:09

Would you expect benzaldehyde to be more or less reactive in nucleophilic addition than propanal ?

02:52

There are two –NH2 groups in semicarbazide. However, only one is involved in the formation of semica

02:15

Cyclohexanone forms cyanohydrin in good yield but 2,2,6-trimethylcyclohexanone does not

04:27

Carboxylic acid is a stronger acid than phenol. Why?

02:47

Give reason for the higher boiling point of ethanol in comparison to methoxymethane

04:50

Explain how does –OH group attached to benzene ring activate it towards electrophilic substitution?

01:43

You are given benzene, conc. H2SO4 and NaOH. Write the equations for the preparation of phenol

03:21

Give two reactions that show acidic nature of phenol. Compare acidity of phenol with that of ethanol

03:50

Explain why is ortho nitrophenol more acidic than ortho methoxyphenol

02:10

Give the equations of reactions for the preparation of phenol from cumene.

02:24

Give the structures and IUPAC names of monohydric phenols of molecular formula, C7H8O.

01:25:53

THERMODYNAMICS in One Shot | All concepts of thermodynamics explained in 1. 25 hours

02:10

Give the equations of reactions for preparation of phenol from cumene

04:07

While separating a mixture of ortho & para nitrophenols name isomer which will be steam volatile.

02:39

Explain why propanol has higher boiling point than that of the hydrocarbon, butane.

01:38

Alcohols are comparatively more soluble in water than hydrocarbons.

04:39

Draw structures of all isomeric alcohols of molecular formula C5H12O & give their IUPAC names

01:41

p-Dichlorobenzene has higher melting point than those of o- and m-isomers. Discuss.

04:59

Primary alkyl halide C4H9Br (a) reacted with alcoholic KOH to give compound (b). Compound (b) is rea

02:49

Out of C6H5CH2Cl and C6H5CHClC6H5, which is more easily hydrolysed by aqueous KOH.

04:34

What is significance of ‘isolated gaseous atom’ & ‘ground state’ while defining ionization enthalp

03:16

First ionization enthalpy of Na is lower than that of Mg but its second is higher than that of Mg?

02:49

What is the lowest value of n for g orbital to exist?

02:21

Show that circumference of Bohr orbit for hydrogen atom is integral multiple of de Broglie waveleng

09:24

The first and the second ionization enthalpies and the electron gain enthalpy of a few elements

02:29

Why can’t electron exist inside nucleus? | Explain using Heisenberg Uncertainty Principle

03:39

The dipole moment of chlorobenzene is less than that of cyclohexyl chloride. Why?

04:31

Alkyl halides are polar still insoluble in water. Why?

02:16

Grignard reagent should be prepared under anhydrous condition. Explain

02:14

What are ambident nucleophiles ? Give Examples

02:29

A hydrocarbon C5H10 does not react with chlorine in dark but gives a single monochloro compound..

04:11

Why does NO2 group show its effect only at ortho- and para- positions and not at meta- position?

07:36

Elimination vs Substitution Reactions

03:41

Identify A, B, C, D, E, R and R1 in the following:

01:16

In the following pairs of halogen compounds, which compound undergoes faster SN 1 reaction?

03:09

Which alkyl halide from the following pairs would you expect to react more rapidly by an SN2 ..

04:25

Oxymercuration - Demercuration Reaction mechanism

03:59

Although chlorine is an electron withdrawing group, yet it is ortho-, para- directing. Why?

04:36

Arrange each set of compounds in order of increasing boiling points.(i) Bromomethane, Bromoform.

04:29

Haloalkanes react with KCN to form alkyl cyanides as main product while AgCN forms isocyanides.

04:36

Draw the structures of major monohalo products in each of the following reactions: - intext 6.5

05:38

Among the isomeric alkanes of molecular formula C5H12, identify the one that on - NCERT intext 6.4

41:22

CBSE Sample Paper Chemistry - 2023-24