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Write the structure of 3-bromo-2-methy-propene

Posted by Ganapati Deganatti 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Give reason : NaCl exhibits schottky defect and not frenkel defect

Posted by Ganapati Deganatti 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Yogita Ingle 6 years, 3 months ago

In NaCl, the cation (Na ⁺ ) and anion (Cl⁻) are of almost similar sizes. The defect shown by these cations and anions is Schottky defect. Whereas Frenkel defect is generally found in ionic crystals where anion is much larger in size then that the cation.

ANSWER

Give reason: NaCl exhibits schottky defect and not frenkel defect

Posted by Ganapati Deganatti 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 6 years, 3 months ago

In NaCl, the cation (Na + ) and anion (Cl− ) are of almost similar sizes. The defect shown by these cations and anions is Schottky defect. Whereas Frenkel defect is generally found in ionic crystals where anion is much larger in size then that the cation.

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Reaction with reasons I Chlorination of benzene in presence of u light 2 Chloro benzene is subjected to hydrolysis

Posted by K K 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is the principle of zone refining?

Posted by M!Ń! ?? 6 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Augustya Chaturvedi 6 years, 3 months ago

Zone Refining-Impurities are more soluble in molten/liquid state rather than solid state.

Deeya Singh 6 years, 3 months ago

This method is based on the principle that impurities are more soluble in the molten state of metal (the melt) than in the solid state.

ANSWER

Acompound A C2H6Oon reaction with pcc gives B ,B which on treatment with dil alkali gives C.On heating C gives D .B on reduction with acidified kmno4 forms a monobasic carboxylic acid deduce ABCAND D

Posted by Chandani Ranpura 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

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Which of the following is isoelectronic pair option fast ICL to cielo 2 second BR O2 minus b r f 2 + third cl2o to brf 4th c n - 3 -

Posted by Archana Kumari 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Calculate the freezing point of a solution containing 0.5g KCl (Molar mass = 74.5 g/mol) dissolved in 100g of water, assuming KCl to be 92% ionized. Kf of water = 1.86K kg/mol.

Posted by Sejal Uniyal 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What are hydrogen peroxide

Posted by Jaklena Roy 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 6 years, 3 months ago

Hydrogen peroxide, (H₂O₂), a colourless liquid usually produced as aqueous solutions of various strengths, used principally for bleaching cotton and other textiles and wood pulp, in the manufacture of other chemicals, as a rocket propellant, and for cosmetic and medicinal purposes.

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Concentrated nitric acid used in laboratory work is 68% nitric acid by mass in aqueous solution. What should be the molarity of such a sample of the acid if the density of the solution is 1.504gml-1 ?

Posted by Goswami Anjali 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Gaurav Seth 6 years, 3 months ago

Concentrated nitric acid used in laboratory work is 68% nitric acid by mass in an aqueous solution. This means that 68 g of nitric acid is dissolved in 100 g of the solution.

Molar mass of nitric acid (HNO₃) = 1 × 1 + 1 × 14 + 3 × 16 = 63 g mol^{- 1}

Then, number of moles of HNO₃= 68 / 63 mol

= 1.08 mol

Also density = 1.504g/mL^-1 (given)

Therefore from the formula density = mass / volume,we get

Volume of solution = 1000/1.504 = 66.49 mL

Therefore molarity of nitric acid = (1.08/66.49) x 1000 = 16.24 M

ANSWER

What is adsorption and absorption

Posted by Navneet . 6 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Augustya Chaturvedi 6 years, 3 months ago

Adsorption - the accumulation of molecular species at the surface rather than in a bulk is termed as adsorption. Absorption the phenomenon of absorbing the substance present on the surface is called absorption.

Gursharn Kaur 6 years, 3 months ago

Observation is a process of movement of a molecules from higher concentration to lower concentration in which the concentration of molecules is same in bulk as well as on the surface where is adsorption is a process in which there is inflow of molecules from low concentration to high concentration in which the concentration of the molecules is different on the surface and in bulk

ANSWER

Whta type of isomerism shown by complex. [Co(NH3)5Cl]So4

Posted by M!Ń! ?? 6 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Cool Dude Pandey 6 years, 3 months ago

Cis geometrical and ionisation

Lavanya ❤️? 6 years, 3 months ago

Linkage isomerism

ANSWER

Tollen's Test ?

Posted by Rahul_ Ry(ʘ‿ʘ) 6 years, 3 months ago

CBSE > Class 12 > Chemistry

3 answers

Nisha Kaushik 6 years, 3 months ago

2[Ag(NH3)2]+OH-

M!Ń! ?? 6 years, 3 months ago

Tollens' Reagent is a chemical reagent used to determine the presence of aldehyde, aromatic aldehyde, and alpha-hydroxy ketone functional groups. The reagent consists of a solution of silver nitrate, ammonia and some sodium hydroxide. It was named after its discoverer, the German chemist Bernhard Tollens.

Xyz Yzx 6 years, 3 months ago

Reaction of aldehyde with ammonical silver nitrate to give carboxylate ion

ANSWER

What is markonikov rule?

Posted by Rahul Kumar 6 years, 3 months ago

CBSE > Class 12 > Chemistry

5 answers

Augustya Chaturvedi 6 years, 3 months ago

Negative part of the addendum gets attached to the carbon containg less no of hydrogen atom

Gursharn Kaur 6 years, 3 months ago

According to this rule the negative part of the substance joins to the carbon containing the least number of hydrogen attached to the IT and the positive path gets attached to the the carbon containing more number of hydrogen atom

Baby Rani 6 years, 3 months ago

Markonikov rule is applied for unsymmetrical alkene in which halogen atom is attached to that carbon which contain less no. of hydrogen atom

Rock Star Unique Boy 6 years, 3 months ago

The halogen atom is added to that carbon which have less number of hydrogen atom and hydrogen atom is added to that carbon which have more number of hydrogen.

Ujjwal Moral 6 years, 3 months ago

According to markonikov rule the negative part of incoming compound will be attached to the carbon with less no of hydrogen atom or more substituted carbon

ANSWER

Assume a temperature of 25degree celsius, total pressure of 1atm & mole fraction of nitrogen in air of 0.78(KH) for nitrogen =8.42 X10raise to - 7M/mm Hgl

Posted by Josna Mary Thomas Thomas 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

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What is the solution?????

Posted by Crystal Khan 6 years, 3 months ago

CBSE > Class 12 > Chemistry

5 answers

Gursharn Kaur 6 years, 3 months ago

A solution is Homogenous or more substances which are known as components. The component which is present in large amount is called solvent and the component which is present in small quantities that's called solute

Sejal Uniyal 6 years, 3 months ago

A solution is a homogenous mixture of two or more substances.

Anshuman Kumar 6 years, 3 months ago

Mixture of solute and solvent is called solution

Ujjwal Moral 6 years, 3 months ago

It is a homogenous mixture of two or more compounds

4Thank You

Sandeep Tyagi Sandeep Tyagi 6 years, 3 months ago

When solute and solvent added it makes solution

ANSWER

All hydrides except water posses reducing property?why?

Posted by Raman Brar 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Ujjwal Moral 6 years, 3 months ago

Due to H bonding

ANSWER

How many marks will Contain from the exercise questions of NCERT only from whole syllabus

Posted by Raj Aryan 6 years, 3 months ago

CBSE > Class 12 > Chemistry

1 answers

Shalini Roy 6 years, 3 months ago

unit 1-14 marks, unit 2- 18 marks, unit 3-14 marks , unit 4-10 marks , unit 5 -14 marks

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Syllabus for chemistry according to this app is not correct so please help me by providing correct syllabus

Posted by Sonia Verma 6 years, 3 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why KMno4 doesn't react with acidified conc. H2So4

Posted by M!Ń! ?? 6 years, 3 months ago

CBSE > Class 12 > Chemistry

3 answers

Deeya Singh 6 years, 3 months ago

Potassium permanganate and sulfuric acid react to produce some ozone, which has a high oxidizing power and rapidly oxidizes the alcohol, causing it to combust.

M!Ń! ?? 6 years, 3 months ago

Kyu krta h ye b bta do ??

Div¥@N$Hi P@M@® 6 years, 3 months ago

Kisne kaha nii krta........ Krta h react... Ye too.... ???