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What is defution

Posted by Priya Trivedi 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

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Why higher ether are insoluble in water?

Posted by Vandana Amol 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

18g of glucose is dissolved in 1g of water at what temperature solution boils at 1.031bar kb of (water is 1.52k)

Posted by Tesmy P.X 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Can u know about the improvement xam

Posted by Rudra Pratap Singh 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why rayon is called as artificial silk while nylon also appears like silk and has flexibility?

Posted by Bhawana Bharti 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

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Aluminium metal cannot be produced by electrolysis of aqueous solution of aluminium salt

Posted by Lucky Thakur 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Value of one faraday

Posted by Lucky Thakur 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Amreen Fatma 7 years, 6 months ago

1F=96500 coulomb

ANSWER

How we can score more than 80% marks??

Posted by Neha Tanwar 7 years, 6 months ago

CBSE > Class 12 > Chemistry

4 answers

Jeetu Sharma 7 years, 6 months ago

Hard working ......!

Achal Bajpai 7 years, 6 months ago

Lot of working in fb and watshapp☺☺☺

Gud Luck ? 7 years, 6 months ago

Prepare from ncert and solve last year papers

Priyanshu Chandola 7 years, 6 months ago

By lot of practice

ANSWER

Q1.Analysis shows that nickel oxide has formula Ni.98O What fractions of nickel exist as Ni²+ and Ni³+?

Posted by Jayant Yadav 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Aisha Gupta 7 years, 6 months ago

It can be solved by considering the fraction Ni2+= x&Ni3+=98-x Now 2x+3(98-x)=200 294=x+200 X=94 98-x=4

ANSWER

0.70g of an organic compound when dissolve in 32g of acetone produced an elevation in boiling point of 0.25C .calculate molar mass of organic compound.

Posted by Mona Devi 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Why is sulphuric acid not used during the reaction of alcohol s with KI?

Posted by Lekshmi Vinod 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Shubham Sharma 7 years, 6 months ago

Because it leads to the formation of HI . Being a good reducing agent it reduces RI formed during the reaction to the respected hydrocarbon RH. TO CARRY OUT THIS REACTION WITH KI STRONG OXIDIZING AGENTS LIKE HNO3 ARE USED

ANSWER

Why O2 show paramagnetic?

Posted by Shivanshi Singh 7 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Ayushi Sambyal 7 years, 6 months ago

It is paramagnetic becoz it has 2 unpaired e-s

Shubham Sharma 7 years, 6 months ago

Due to its molecular configuration in which anti - bonding molec. Orbitals are empty ( class 11)

ANSWER

Give suitable reason , copper is malleable and ductile

Posted by Vishal Kumar 7 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Ayushi Sambyal 7 years, 6 months ago

Becoz of the base centered cubic structure ...... its atoms are uniformly arranged having less bond strength and little overlap of its atomic planes making it easier to show its ductility and maleability

Shivanshi Singh 7 years, 6 months ago

Because copper is a metal.

Vishal Kumar 7 years, 6 months ago

Answer plzzz

ANSWER

Hi friends i have a small question in chemo and that is " tell any one compound of oxygen in which oxygen should have +4 oxidation state"

Posted by Shaista Parveen 7 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Shaista Parveen 7 years, 6 months ago

Is OF4 exist rishbah sahu

Shaista Parveen 7 years, 6 months ago

I need a compund of oxygen in which oxygen has +4 oxidation state pls tell me

Rishabh Sahu 7 years, 6 months ago

No compound actually found in popular sources. Hypothetically take it to be OF4 (i don't know if it may actually exist) no other compound possible.

ANSWER

What is bond length

Posted by Md Sahil 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Kalpna B. K. 7 years, 6 months ago

Distance between the two atom bonded together

ANSWER

Is point defect and crystal defect same

Posted by Anushka Cv 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Kolbe reaction

Posted by Swati Raj 7 years, 6 months ago

CBSE > Class 12 > Chemistry

2 answers

Aisha Gupta 7 years, 6 months ago

Klobe schmitt reaction is acarboxylation chemical reaction which takes place by heating sodium phenocide with carbon dioxide under 100 atm pressure & 125 c temp in presence of sulphuric acid. For further details and reaction i suggest you to go through the reference book rather than NCERT.

Riddhi Khandalwal 7 years, 6 months ago

Hi go to 11 class

ANSWER

Which oxo-acid of phosphorus contains p-p linkage?

Posted by Kalpna B. K. 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Science of class 9 first chapter

Posted by Harshit Yadav 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is molar ratio?

Posted by Shivanshi Singh 7 years, 6 months ago

CBSE > Class 12 > Chemistry

3 answers

Shubham Sharma 7 years, 6 months ago

Substance here includes everything : atoms ,ions,molecules etc.

Shivanshi Singh 7 years, 6 months ago

Is it can also of ion?

Shubham Sharma 7 years, 6 months ago

It is the ratio of moles of two substances

ANSWER

A student wanted to draw his school building on a glass sheet, which acid he should use?

Posted by Kalpna B. K. 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Relationship between K1,K2,K3 2a=B+3 -d/dt(concentration of A)=K1(concentration of A *A) d/dt(concentration of B)=K2(concentration of A*A) d/dt(concentration of C)=K3(concentration of A*A)

Posted by Sakshi Sharma 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Muscular tissus

Posted by Tulika Pandey 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Ge doped with In is p-type semiconductor?

Posted by Wani Rao 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Kalpna B. K. 7 years, 6 months ago

Because Ge belongs to group 14 and In belongs to group 13.Therefore, an electron deficient hole is created.

ANSWER

Calculate mole fraction of ethyl alcohol and water in a solution of in which 6 gram of ethyl alcohol and 180 gram of water added with water

Posted by Rishabh Yadav 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

A dilute solution of sodium floride is electrolysed ;the products at the anode and cathode are A)F2,Na. B)F2,H2 C)O2,Na. D)O2,H2

Posted by Sriram Sharma 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Layophibic

Posted by Sachin Rastogi 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What are solids rigid ?

Posted by Ritesh Kumar 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Unmesh Yadav 7 years, 6 months ago

Because in solid there is intermolecular force if attraction and atoms are not free to move

ANSWER

In group 15 nitrogen family which element have higher boiling point

Posted by Arjundev Jayaraj 7 years, 6 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Compartments paper

Posted by Deepak Verma 7 years, 6 months ago

CBSE > Class 12 > Chemistry

1 answers

Rishabh Sahu 7 years, 6 months ago

Can't understand your query

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