Incorrect URL accessed!!!!

ANSWER

All the distinguish test in organic

Posted by Anand Jha 5 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Highest freezing point

Posted by Arpit Pandey 5 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Ovais Dar 5 years, 4 months ago

Lowest freezing point of H2O is 0°C But u asked for the highest freezing point i think its just a lame question.

ANSWER

Can i get all the reasoning questions of organic

Posted by Maahi Anand 5 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why are alkyl hallides called the synthetic tool in the hands of chemist

Posted by Gungun Bansal 5 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Devil ? 5 years, 4 months ago

Because alkyl halides r used in making a lot of other compounds ..

ANSWER

If 0.5 M methyl iodide reacts with 1 M NaOH to form methanol at the rate of 0.05 M/s. What would be the rate if 0.1 M methyl iodide reacts with 2 M NaOH to form methanol?

Posted by Harshita Garg 5 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Harshita Garg 5 years, 4 months ago

Shaista ye wla question sayid limiting reagent se hoga..but answer match nhi hua..if you have tried?

Shaista Shaista 5 years, 4 months ago

Someone pls answer this question

ANSWER

What is the potential of hydrogen electrode in contact with a solution whose pH is 10 ?

Posted by Aryan Choudhary ?? 5 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Aryan Choudhary ?? 5 years, 4 months ago

Thnx Meghna ji

Meghna Thapar 5 years, 4 months ago

p H = 10

Using formula [H⁺] = 10^-pH

So [H⁺] = 10^-10M

Electrode reaction will be

H⁺ + e^- → ½ H₂

Use the formula

Value of E⁰ = 0

E_cell = E⁰ - 0.0591 log[H₂]

1 [H⁺]

E_cell = - 0.0591 log( 1/10^-10)

E_cell = - 0.0591 ( 10) = -0.591 V

ANSWER

What is Dow's process??

Posted by Nisha Yadav 5 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Yogita Ingle 5 years, 4 months ago

Dow’s process is a method to prepare phenol. The reactant chlorobenzene is heated with aqueous sodium hydroxide at temperature 623K and 300atm to get sodium phenoxide ion. Then in the next step sodium phenoxide ion is treated with Dilute HCl which gives the final product as phenol.

Prince Maurya 5 years, 4 months ago

Preparation of chlorobenzene using phenol and the reagent used is NaOH

ANSWER

What is Kolbe's reaction??

Posted by Anirudh Shukla 5 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Gaurav Srivastav Gs 5 years, 4 months ago

Kolbe's reaction- Phenol+NaOH gives Sodium phenoxide and this phenoxide with CO2 under acidification process we get "Orthohydroxybenzoic acid (Salicylic acid)" This acid our final product.

Yogita Ingle 5 years, 4 months ago

Kolbe reaction, also known as Kolbe Schmitt Reaction is a type of addition reaction named after Hermann Kolbe and Rudolf Schmitt. When phenol is treated with sodium hydroxide, phenoxide ion is generated. The phenoxide ion generated is more reactive than phenol towards electrophilic aromatic substitution reaction. Hence, it undergoes electrophilic substitution reaction with carbon dioxide, which is a weak electrophile. Ortho-hydroxybenzoic acid (salicylic acid) is formed as the primary product. This reaction is popularly known as Kolbe’s reaction.
An example of the Kolbe reaction (Kolbe Schmitt Reaction) is given below:

Kolbe’s Reaction – Treating phenol with sodium hydroxide generates phenoxide ion

ANSWER

What is nature of oxidation

Posted by Sandeep Ojha 5 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Dishant Gujar 5 years, 4 months ago

Addition of oxygen and removal of electron

ANSWER

Why do we study order of reaction?

Posted by Anisha Kabsuri 5 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Sandeep Ojha 5 years, 4 months ago

Because we know that some reaction are shown in physical life so you know this about

ANSWER

Why bond angle in NH4+ ions is higher than in NH3

Posted by Riya Babu 5 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 5 years, 4 months ago

Bond angles in ammonia and ammonium ion.
The bond angles in ammonium ion, NH₄⁺ are the theoretical tetrahedral bond angles of approximately 109.5 degrees. The ammonium ion is completely symmetrical.
The bond angles in the asymmetrical ammonia molecule are less than 109.5 degrees, they are about 107 degrees. This is due to the repulsion of the bonding pairs and the lone pair.

ANSWER

bromoethane to propan-2 one

Posted by Aryan Verma 5 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Pf3 is known but nf5 is not why

Posted by Riya Babu 5 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Devil ? 5 years, 4 months ago

Because nitrogen has no vacant d orbital

ANSWER

Ferromagnetic substance

Posted by Shailendra Singh 5 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Vansh Prajapati 5 years, 4 months ago

Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets. ... Only a few substances are ferromagnetic. The common ones are iron, cobalt, nickel and most of their alloys, and some compounds of rare earth metals.

ANSWER

Is logarithm table are available in board exams and in compitition level?

Posted by Gaurav Srivastav Gs 5 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Devil ? 5 years, 4 months ago

Yr same question for boards not confirmed ?? But in competitive it is not provided

Shivam Gupta 5 years, 4 months ago

Yes

ANSWER

Why NH4+ HAS Higher bond angle than NH3 ?

Posted by Lachhmi Pandey 5 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 5 years, 4 months ago

ANSWER

An aromatic compound A on treatment with ch3cl3/koh gives two compounds b and c .Both b and c give the product d when distilled with zinc. What are a,b,c,d

Posted by Hamna Fathima 5 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Ajeet Jaiswal 5 years, 4 months ago

Hsgjshjbcsejkkncxs

ANSWER

Coordination chemistry

Posted by Swetha.G Gajendran 5 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Akanksha Kumari 5 years, 3 months ago

A coordination complex consists of a central atom or ion, which is usually metallic and is called the coordination centre, and a surrounding array of bound molecules or ions, that are in turn known as ligands or complexing agents

ANSWER

What is the unit of protein

Posted by Ashish Yadav 5 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Anirudh Shukla 5 years, 4 months ago

Amino acids

Kartika Rajput 5 years, 4 months ago

Amino acids

ANSWER

What is acid?

Posted by Navneet Kaur 5 years, 4 months ago

CBSE > Class 12 > Chemistry

4 answers

Mohit Thakur 5 years, 4 months ago

Those subtance which have ph less than 7 and contain H ions are called acids

Vansh Prajapati 5 years, 4 months ago

a liquid substance that can dissolve metal and may burn your skin or clothes. Acids have a pH value of less than 7

Anuj Giri 5 years, 4 months ago

Metal are malleable, ductile, sonorous and hard and soft, electricity conductor.

2Thank You

Navneet Kaur 5 years, 4 months ago

What is metal and non metal?

4Thank You

ANSWER

Give structure of the products you would expect wh each of the following alcohol reacts with the HCL is zncl2 HBR socl2 1 butan 1 OL tu to 2 methyl butan 2 OL

Posted by Anjana A 5 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is difference between space lattice and atom per unit cell

Posted by Aakash Pandey 5 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Does ketone react with alcohol ??

Posted by Sandhya Bhandari 5 years, 4 months ago

CBSE > Class 12 > Chemistry

3 answers

Manik Agarwal 5 years, 4 months ago

Mahendra Rathor 5 years, 4 months ago

Yes to form hemiketal

Abhay Sahu 5 years, 4 months ago

ANSWER

Potassium dicromate

Posted by Abhishek Sharma 5 years, 4 months ago

CBSE > Class 12 > Chemistry

3 answers

Manik Agarwal 5 years, 4 months ago

K2cr2o7

Lalit Jakhar 5 years, 4 months ago

K2Cr2O7

Bhawna Sangwan 5 years, 4 months ago

KCr2O7

ANSWER

Two liquid X and Y boils at 380k and 480k respectively. Which of them is more voletile liquid

Posted by Naval Kushwah 5 years, 4 months ago

CBSE > Class 12 > Chemistry

5 answers

Nitin Sharma 5 years, 4 months ago

Which has lower boiling point have greater extent of volatile

Vivek Kumar 5 years, 4 months ago

Bhawna Sangwan 5 years, 4 months ago

Kanishka Yadav 5 years, 4 months ago

X answer

Naval Kushwah 5 years, 4 months ago

Liquid X is more voletile .Because its has low boling point than liquid Y.

ANSWER

How many people's said that this statement is true Amorphous solids mein regular arrangement hota hai constituent particles (ions , molecules )ka long range order ke liye

Posted by Nikhil Negi 5 years, 4 months ago

CBSE > Class 12 > Chemistry

4 answers

Pragya Yadav 5 years, 4 months ago

Amorphous have short range order

Anuj Giri 5 years, 4 months ago

Wrong

Nitin Sharma 5 years, 4 months ago

In amorphous solids there is irregular arrangement and they are isotropic in nature, example glass

Jhanvi Saini 5 years, 4 months ago

No this statement is wrong

ANSWER

Benzoic acid is weaker than ___ but stronger than___

Posted by Nimisha N 5 years, 4 months ago

CBSE > Class 12 > Chemistry

4 answers

Mahendra Rathor 5 years, 4 months ago

Benzoic acid is stronger than methanoic acid but weaker than etanoic acid.

Vivek Kumar 5 years, 4 months ago

? than water alcohol 2-nitro phenol

Vivek Kumar 5 years, 4 months ago

Picric acid

Bhawna Sangwan 5 years, 4 months ago

Weaker than formic acid and stronger than acetic acid

2Thank You

ANSWER

What is primitive unit cell.

Posted by Manish Kumar 5 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

? Yang ? 5 years, 4 months ago

If the constituent particles of a crystal lattice are present only on the corner positions of a unit cell, it is known as primitive unit cell. Hope It Helps You?✌

Yogita Ingle 5 years, 4 months ago

Primitive Unit Cells

If the constituent particles of a crystal lattice are present only on the corner positions of a unit cell, it is known as primitive unit cell.