Ask questions which are clear, concise and easy to understand.

Please Wait.. Editor is Loading..
What do you mean by hybridization
  • 1 answers

Yogita Ingle 9 hours ago

Hybridization is defined as the mixing of the atomic orbitals belonging to the same atom but having slightly different energies so that a redistribution of energy takes place between them resulting in the formation of new orbitals of equal energies and identical shapes. The new orbitals thus formed are known as hybrid orbitals.
Hybridization of P in PCl5 : sp3d

Kal paper hai mera chemistry ka organic ka revision notes chahiye acchi quality ke "asap"
  • 2 answers

Anisha Sharma 5 hours ago

I think you have done with your exam.... Sorry.... But my suggestion will help you for your future....

Anisha Sharma 5 hours ago

Ayushi.... Here no one can provide you notes.... You can only post your question and answers can be provided to you..... As such notes can not be provided because they can be very long.... And how can anybody type so much.. So dear... You can have them on this app or from internet... Or YouTube I had also asked for Organic chemistry notes but no one gave me answer because it's not possible..... So I am suggesting you to take help from those apps and website... According to me...... School level notes are best available at gravity circle And for iit neet level.... Physics wallah is best for sure.... I hop you will get any help from my comment.. All the best dear 😊👍
What is bond order?
  • 2 answers

Riya Sharma 21 hours ago

(no. of bond pair electron - no. of lone pair electron) / 2

Paarth Bissa 1 day ago

Bond order=no.of bond present around central atom÷no.of sigma bond
What is hookels law
  • 2 answers

Yogita Ingle 1 day, 1 hour ago

  • Robert Hooke was the scientist who gave Hooke’s law.
  • Hooke’s law states that within the elastic limit, stress developed is directly proportional to the strain produced in a body.
  • Consider a scenario where we apply external force to the body. As a result stress develops in the body due to this stress there will be a strain produced in the body which implies that there will be some deformation in the body.
  • Because of stress, strain is produced.
  • According to Hooke’s law, if strain increases the stress will increase and vice-versa.
  • The Hooke’s law is applicable to all elastic substances.
  • It does not apply to plastic deformation.

Samya Parmar 1 day, 1 hour ago

Stress is directly proportional to strain
What is Fazan's rule
  • 1 answers

Niraj Kumar 1 day, 9 hours ago

It is used to find covalent character in Ionic r/n.
What is reaction enthlpy
  • 0 answers
Why liquid diffuses slowly as compared to gases?
  • 1 answers

Suraj Krishna 2 days, 5 hours ago

Because of more rapid movement of particles in gases ..so gases diffuse quickly
Jal ka rasaynik sutra kya hota hai
  • 1 answers

Vivek Kumar 2 days, 11 hours ago

Jal ka rasaynik sutra H2O hota hai
Avogadro sankhya ka Maan kitna hota hai
  • 2 answers

Isha Chandra 2 days, 8 hours ago

6.022 × 10^23

Vivek Kumar 2 days, 11 hours ago

S2 ka electronic vinyas
Define aufbau principle .which of the following orbits are possible 1p,2s,2p,and 3f
  • 6 answers

Isha Chandra 2 days, 8 hours ago

2s and 2p are possible

Isha Chandra 2 days, 8 hours ago

A/c to aufbau principle electrons are filled in subshell a/c to increasing order of energy

Khushi Akherajot 2 days, 21 hours ago

2s then 2p are possible among them 1p and 3f does not exist..

Khushi Akherajot 2 days, 21 hours ago

According to this principle, in different subshell of an atom elctrons are filled in increasing order of their energy that is subshell of lower energy is filled first

Darshana Yadav 2 days, 22 hours ago

according to aufbau principle electron fill orbitals starting at the lowest available energy levels before the filling of higher levels....

Aman Kumar 2 days, 22 hours ago

Possible orbits is 1p.....if I m wrong then correct me....but I think its correct.
What is a ribcage?
  • 1 answers

Yogita Ingle 3 days, 1 hour ago

The rib cage is a bony and cartilaginous structure. A typical rib cage consists of 24 ribs (12 pairs), the sternum (an inverted T-shaped structure connecting the rib bones), costal cartilages and the 12 thoracic vertebrae shown in the diagram below. The first seven pairs of ribs connect directly to the sternum and are referred to as true ribs. The remaining five pairs of ribs do not connect directly to the sternum and are referred to as false ribs. The rib cage aids in the protection of the heart and lungs.

Which of the following is most acidic? 1) para fluoro phenol 2) para chloro phenol 3) para bromo phenol 4) para iodo phenol
  • 2 answers

Anjani Kumar 1 day, 1 hour ago

But fluorine applies the strongest -I effect and as we know that acidic strength is directly proportional to -I, so according to this para fluorophenol must be the most acidic one. But the answer is parachlorophenol. Help.

Yogita Ingle 3 days, 8 hours ago

The acidic strength of phenols is affected by the presence of substituents on the ring.
An electron-withdrawing group increases the acidic strength by greater dispersal of the negative charge on the phenoxide ion by inductive effect (-I) or by resonance (-R) effect.
An electron-donating group decreases the acidic strength due to (+I) or (+R) or both.
Halogens have +R and -I effects, but the -I effect is more dominant.
Therefore, all halophenols are more acidic(except p-fluorophenol) than phenol itself.
 

Chemical properties of alkyne
  • 0 answers
H3BO3 = ??
  • 1 answers

Darshana Yadav 3 days, 22 hours ago

Boric acid
Please complete the reaction B2H6 + 6HNO3 = ?
  • 1 answers

Aman Kumar 3 days, 22 hours ago

B2NO3+ 6H2....may be wrong...😐
Define P- block element
  • 3 answers

Riya Sharma 1 day, 2 hours ago

Those elements in which last electron enter in p -orbital.

Aman Kumar 3 days, 18 hours ago

P-block elements are those elements which are basically belongs to group 13 to 18....
P block element are those element which has electronshell 2 in their outermost shell
Whether halogens apply +I affect or -I affect?
  • 2 answers

Aman Kumar 3 days, 18 hours ago

-I effect......hope it helps

Rahul Singh 4 days, 1 hour ago

Yes
What is buffer solution? Explain and ita type.
  • 1 answers

Isha Chandra 4 days, 3 hours ago

Buffer soln is an aqueous solution consisting a weak acid and its conjugate base or vice versa

CBSE Study App

  • Install myCBSEguide mobile app for FREE sample papers, Test Papers, Revision Notes, Previous year question papers, NCERT solutions and MCQ tests
  • Refer myCBSEguide App to your friends and Earn upto Rs.500/-.

myCBSEguide App

Create Question Papers

  • We have 3,00,000+ questions to choose from.
  • You can print these questions papers with your own Name and Logo.

This product is best fit for schools, coaching institutes, tutors, teachers and parents who wish to create most relevant question papers as per CBSE syllabus for their students to practice and excel in exams. Creating question papers online with your own name and logo takes less than 2 minutes. Just follow few steps, customise header and footer and download the question paper in PDF format. 

Download eBooks as PDF

  • Select eBook
  • Pay online
  • Download as PDF

Download CBSE sample papers, test papers and worksheets as PDF. Buy chapter wise online MCQ tests for day to day practice.

Work from Home

  • Work from home with us
  • Create questions or review them from home

No software required, no contract to sign. Simply apply as teacher, take eligibility test and start working with us. Required desktop or laptop with internet connection