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Liquefiable gases

Posted by Jithesh Jith 8 years, 4 months ago

CBSE > Class 12 > Chemistry

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Why should we take the value of 'z' is 1 in case of cesium chloride?

Posted by Manjeet Khichi 8 years, 4 months ago

CBSE > Class 12 > Chemistry

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What kind of reactions will they ask

Posted by Anushri Kachhwaha 8 years, 4 months ago

CBSE > Class 12 > Chemistry

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If NaCl is doped with 10 to the power -4 mol % og Strontium Chloride, the concentration of cation vacancies will be -

Posted by Vaibhav Joshi 8 years, 4 months ago

CBSE > Class 12 > Chemistry

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Conversion butan-1-ol to butanoic acid

Posted by Amit Kumar 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Tanmay Joshu 8 years, 4 months ago

Carring out reaction in presence of alkaline KMnO4 and H3O^+

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How many resonating structures are possible for anilinium ion ? give reason for that.

Posted by Abhishek Jat 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Dr. Kamlapati Bhatt 8 years, 4 months ago

The following represents resonating structures of anilnium ion :

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Ethanol to but-1-yne conversion

Posted by Abhay Kumar Mishra 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Dr. Kamlapati Bhatt 8 years, 4 months ago

Step 1 . Treat ethanol with thionyl chloride SOCl₂ to get chloroethane

Step 2. Chloroethane when reacted with sdium acetylide forms but- 1-yne ,

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Why selenium do not form monooxide

Posted by Sachin Sharma 8 years, 4 months ago

CBSE > Class 12 > Chemistry

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Preapartion of grignard reagent

Posted by Ayush Namdev 8 years, 4 months ago

CBSE > Class 12 > Chemistry

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What is molecularity of a reaction??

Posted by Akash Saini 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Aakanksha Jawla 8 years, 4 months ago

Number of atoms ,ions or molecules in a species that must collide with one another result in chemical reaction . Only for elementary reaction.

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What is cross aldol

Posted by Anshul Kotiyal 8 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Mansi Kaushal 8 years, 4 months ago

When 2 different aldehydes or ketones or 1 aldehyde and 1 ketone react with dilute NaOH, 2 self products and 2 cross products are formed called cross aldol condensation.

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Vivek Saini 8 years, 4 months ago

Ask questions from biology

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How Cl gas is produced from bleaching powder

Posted by Pratishta Sheelavant 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Dr. Kamlapati Bhatt 8 years, 4 months ago

Bleaching powder when reacts with dilute acids all the chlorine present in it is liberated as Cl₂ gas ,

CaOCl₂ + H₂SO₄-------------> CaSO₄ + Cl₂ + H₂O

Calcium oxychloride dilute sulphuric acid

(Bleaching powder)

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is colloid a state

Posted by Pooja Ps 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Trisha Tyagi 8 years, 4 months ago

colloid is a heterogenous mixture of dispersed phase and dispersion medium

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Why aluminium is used for making cooking utensils

Posted by Rancho Baba 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Angad Kumar 8 years, 4 months ago

Aluminium is a good conductor of heat.Thats why it is extensively used for making cooking utensils. ... Aluminum will form a layer of protective oxide that prevents further reaction.

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Give reason alcohol act as a weak base

Posted by Jyoti Ghanghas 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Angad Kumar 8 years, 4 months ago

The oxegen atom of the hydroxyl group has two lone pairs of electrons. Therefore Alcohols accept a proton from strong mineral acid to form oxonium ions. Hence act as a weak bases .

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Basic Difference between compound and mixture

Posted by Tanmay Joshu 4 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 4 years, 9 months ago

Basis	Compound	Mixture
Definition	A compound is the substances that are formed by combining two are more chemical elements.	A mixture is a substance created from two or more matter that can be separate with the help of physical methods.
Nature	Compound substances are always homogeneous in nature.	Nature of Mixture substances can either be homogeneous or heterogeneous.
Examples	Water (H₂O), Sodium Chloride (NaCl), Sodium Bicarbonate (NaHCO₃), salt, sugar, and baking soda are some of the examples of compound substance.	A mixture of oil and water, sand and soil, sulphur and iron filings, smoke and fog (smog) etc are some examples.
Types	Compounds are of three types i.e. covalent compounds, a metallic compound, and ionic compounds. Moreover, compounds can also be classified as organic or inorganic compounds based on the presence of the carbon atom.	There are two main types of mixture i.e. homogeneous and heterogeneous.
Substance category	Mainly pure water is part of the compound.	Mixtures fall under impure water.
Separation of constitution	The only methods that can be separate constituents of compounds are chemical and electrochemical (like extraction).	The constituents of a mixture can easily be separated by physical (like filtration) method.
Composition	The ratio of the elements in compounds is always fixed. They contain only one type of molecule. Also, the elements chemically combined.	Whereas, a mixture can have a variable composition of substance in forming but the ratio is not fixed nor they are combined via chemical bonds.
Representation	A compound is represented using its chemical formula.	A mixture cannot be represented by using formula.
Properties	In a compound, the properties are peculiar to itself as the constituents of a compound lose their original properties	The constituents of a mixture do not lose their property. So, the mixture properties are generally a sum of the properties of its constituents.
New substance	When two or more constituents are chemically combined, they together formed a new substance.	No new substance is formed in mixtures and its properties depend upon the properties of its constituents.
Melting and boiling point	The melting and boiling point of a compound is defined.	No melting and boiling point is defined in a mixture.
Mass ratio	A compound is depending upon specific ratio.	Mixtures have a variable mass ratio depending upon the number of ingredients.

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What are michells

Posted by Darshan Pradhan 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Malkeet Singh 8 years, 4 months ago

Miscells are aggregated particles formed during cleanging action of soap

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How name reaction should be learn in easy way ....

Posted by Navneet Singh 8 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Mansi Kaushal 8 years, 4 months ago

Rather than learning them all together just take any 1 reaction and learn it by heart maybe just 1 reaction per day but it should be learnt in such a way that if any question comes from it from anywhere you are able to answer it without any confusion. It should not be like learning all but not completely and getting confused in the paper or when someone asks you about that. ☺

2Thank You

Naved Hussain Ansari 8 years, 4 months ago

make a notebook of name reaction so that u can easily learn them nd used in any conversions also

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How to remember p block

Posted by Kannu Raina 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Mansi Kaushal 8 years, 4 months ago

Best way is that you just read it some days prior to the exam if it's for boards you can do the 10 years sample papers and if it's for NEET then just do it some days before the final day so that you are able to retain some of its part in your mind

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What is neucleophilic substitution

Posted by Manisha Poonia 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Amit Yadav 8 years, 4 months ago

The reacn in which a nucleophile attacks on reactant called nucleophilic substitution reacn

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Transition metals and their compound generally exhibit a paramagnetic behavior? Why

Posted by Osama Wali 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Dr. Kamlapati Bhatt 8 years, 4 months ago

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Transition metals and their compound generally exhibit a paramagnetic behavior.give reason?

Posted by Osama Wali 8 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Rashi Bari 8 years, 4 months ago

Because they have unpaired electron in d orbital (either in their ground state or excited state)

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Deepak Jangra 8 years, 4 months ago

They show paramagnetism because they have unpaired electron

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State the following raoult's law in its general form in reference to solution

Posted by Nandini Sharma 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Kritika Trehan 8 years, 4 months ago

In its most general form, this law states that the vapor pressure above an ideal solution is given by the sum of the products of the vapor pressure of each component and its mole fraction.

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Which of the following on reduction with LiAl4 gives ethylalcohol ( C2H5oH )

Posted by Pankaj Aditya 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Kajal Bhardwaj 8 years, 4 months ago

Carbonyl gp Parent has to be unsaturated

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Anyone have tricks to solve conversionso in organic

Posted by Kajal Bhardwaj 8 years, 4 months ago

CBSE > Class 12 > Chemistry

3 answers

Mansi Kaushal 8 years, 4 months ago

My pleasure ??

1Thank You

Kajal Bhardwaj 8 years, 4 months ago

Thanks mansi kaushal

1Thank You

Mansi Kaushal 8 years, 4 months ago

No just look at the reactant and product and observe the changes. Then just find out the reagents required to put those changes. If you learn whole context by heart then conversions are not at all difficult.

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How will convert benzyl chloride to benzyl alcohol?

Posted by Ajeet Yadav 8 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Nidhi Pandey 8 years, 4 months ago

By reacting it with NaOH the Na+ will take out cl- in the form of NaCl and OH- will attack on Benzyl ccarbocatio this process is known as Nucleophilic substitution rxn

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Why transition elements first decrease and then start increase in size

Posted by Saiqa Sheikh 8 years, 4 months ago

CBSE > Class 12 > Chemistry

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What is overpotential

Posted by Annu Chodapureddi 8 years, 4 months ago

CBSE > Class 12 > Chemistry

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Explain cleansing action of saop?

Posted by Akash Goryan 8 years, 4 months ago

CBSE > Class 12 > Chemistry

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What is inter pair effect

Posted by Manmohan Ghotra 8 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Manvendra Pratap Singh 8 years, 4 months ago

In inert pair effect the inner S shell electrons does not participate in bonding because energy to unpair s electrons is higher than the energy removed by bonding

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Priyam Sahu 8 years, 4 months ago

Inert part effect in which inner s shell electron does not participate in it

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