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  • 2 answers

Janvi Dubey 7 years ago

NCERT is best ever book for these exams only you have to do is to have clear understanding of the concept ☺️
Solonomus for organic......and jd lee for inorganic...
  • 1 answers

Yogita Ingle 7 years ago

Aryl halides are the compounds that contain halogen atom directly attached to the benzene ring. They have general formula ArX.

  • 1 answers
Please complete the question.
  • 5 answers

Aj Jain 7 years ago

Pradeep's Is best for board exam And solid state is deleted

Aman Kumar 7 years ago

What happen...if u have any more doubt...then ask...we will try to solve ?

Priya # 7 years ago

What about solid state??!!!

Aman Kumar 7 years ago

Solid state may be deleted....???...not surely

Aman Kumar 7 years ago

Modern ABC is useful ...I think.....
  • 3 answers

Kaushik Singh 7 years ago

Solute neans the substance which is present in less amount . Solvent is the substance which is present in more amount . Eg water 100 ml and sugar 10 g Sugar is solute & water is solvent . In case of syrup 60% sugar. & 40% water Sugar is solute because ( a solvent is the component whose phase is same as that of phase of solution

Tushar Kumar 7 years ago

*solute and solvent forms a solution *Solute present in less quantity and solvent present in more quantity

Aman Kumar 7 years ago

Solute means the substance.....and solvent means water
  • 1 answers

Sivan Karthick 7 years ago

molality=mol per lit =4/23+16+1÷1/2 =8÷40 =1÷5 =0.5 mol per lit molality=0.5mol per lit
  • 1 answers

Yogita Ingle 7 years ago

The intermolecular force of attraction make the particles of solid closely packed and force them to only oscillate at their fixed positions. These give solids a definite volume. he particles of solids are close packed and can only oscillate about their fixed positions. These properties make solids rigid.

  • 1 answers

Yogita Ingle 7 years ago

  • Packing faction or Packing efficiency is the percentage of total space filled by the particles.

  • Both  hcp & ccp though different in form are equally efficient. They occupy the maximum possible space which is about 74% of the available volume. Hence they are called closest packing.

  • Packing Efficiency ={tex} \frac{Volume\ occupied\ by\ all\ the\ spheres\ in \ unit\ cell}{Total\ volume\ of\ the\ unit\ cell}\times 100{/tex}
  • 1 answers

Yogita Ingle 7 years ago

Raoult’s law

  • Raoult’s law establishes a quantitative relationship between the partial vapour pressure and mole fraction of a solution.
  • This law is only for liquid-liquid solution.
  • The law states that for a solution of volatile liquids, the partial vapour pressure (p) of each component in the solution is directly proportional to its mole fraction (x).
  • Mathematically, p ∝ x

            Or p = p 0

Where p0 is the vapour pressure of pure component at the same temperature.

  • 1 answers

Raghu Marvania 7 years ago

Only ncert is best for board
  • 5 answers

???. Pragati 7 years ago

Yes Aman u r right modern abc is best for both chemistry and physics....but I have taken "All in one"for chemistry...it also seems good

Aman Kumar 7 years ago

It may help u

Aman Kumar 7 years ago

Modern ABC

Ananya Bhardwaj 7 years ago

Okay...any other

Asif Khan 7 years ago

Arihant
  • 1 answers

Harsh Kaushik 7 years ago

no it is remove from the syllabus
  • 3 answers

Hritik Kumar 7 years ago

Yes

Amisha Agasti 7 years ago

Yes
Yessssss.... it is must .... 80 % of board exams are from NCERT ....
  • 2 answers

Kapri Sub 7 years ago

Ok thanx
Solid state is not included in Class 12 bord exam....but ray optics is again added
  • 1 answers

Gaurav Seth 7 years ago

Henry's law only applies for sufficiently dilute solutions.The range of concentrations in which it applies becomes narrower the more the system diverges from ideal behavior.
It also applies simply for solutions where the solvent does not react chemically with the gas being dissolved.A common example of a gas that does react with the solvent is carbon dioxide,which forms carbonic acid(H2CO3)to a certain degree with water.

  • 1 answers
a) Molarity is 1.6M ( b )molality is 0.6 (c) normality is 3.2 (d) mole fraction of sod. Carbonate is 0.15 and for water is 0.85
  • 1 answers

Yogita Ingle 7 years ago

Initial pH = 1, i.e. [H+] = 0.1 mole/litre
New pH = 2, i.e. [H+] = 0.01 mole/litre
In case of dilution: M1V1= M2V2
0.1 ×1 =0.01 × V2
V2= 10 litre.
Volume of water added = 9 litre.

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