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Bhawna 07/01/2015 in  Class VI-VIII Tuition

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Noor replied | 12/04/2016

When an atom forms its first bond with another atom, sigma bonding occurs (yes, all the single bonds) and when the atom forms its second or third or so on bond with another atom, pi bond occurs. There is also a difference in the orientations of the two bonds, as in how they involve different orbitals.

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Navneet replied | 15/04/2016

Sigma bond
1. This bond is formed by the overlap of atomic orbitals along the internuclear axis.
2. The bond is rotationally symmetrical around the internuclear axis.
3. S as well as p orbitals can form sigma bond.
4. It is stronger than a pi bond.
5. Hybrid orbitals form sigma bond.
Pi bond
1. This bond is formed by the lateral overlap of two...  more»
Sigma bond
1. This bond is formed by the overlap of atomic orbitals along the internuclear axis.
2. The bond is rotationally symmetrical around the internuclear axis.
3. S as well as p orbitals can form sigma bond.
4. It is stronger than a pi bond.
5. Hybrid orbitals form sigma bond.
Pi bond
1. This bond is formed by the lateral overlap of two p orbitals which are mutually parallel but oriented perpendicular to the internuclear axis.
2. The bond is not rotationally symmetrical around the internuclear axis.
3. Only p orbitals can form pi bond.
4. It is weaker than sigma bond.
5. Unhybridised orbitals form pi bond. «less

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Ravi replied | 28/01/2015

Largest cell is - Ovum AND the longest is - neuron

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Sunil replied | 29/01/2015

nerve cell

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Anita 07/01/2015 in  Class VI-VIII Tuition

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Dr Ashok replied | 29/01/2015

The solvent will flow from high(hypertonic) to low(hypotonic) concentration. The fish that is used to salt water has high solutes (Salts) and the freshwater is devoid of solutes. As a result, when you place a saltwater fish in freshwater, the freshwater will move into the cells. This will cause them to swell and burst (become turgid)!!! Not a nice thing to do to a fish!

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Ravi replied | 29/01/2015

Because of the process of osmosis, whereby water diffuses from an area where it has low concentration to one where it has high concentration.
The metabolism of marine fish is different from that of freshwater fish, in that they are specifically adapted to live in waters containing a high salt content. As a result, their bodies contain less water- they have less in their bloodstream,...  more»
Because of the process of osmosis, whereby water diffuses from an area where it has low concentration to one where it has high concentration.
The metabolism of marine fish is different from that of freshwater fish, in that they are specifically adapted to live in waters containing a high salt content. As a result, their bodies contain less water- they have less in their bloodstream, and a higher content of salt in their tissues and organs.
When placed in freshwater conditions, water will naturally diffuse from it's high concentration to the area where it is of low concentration- the tissues and body of the fish. As a result, the poor animal's body tisues and organs become engorged with water, resulting in rupture, haemorrhanging and the eventual 'bursting' of the creature's body. «less

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Gyanendra replied | 13/04/2016

600 km

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Manoj Kumar replied | 28/04/2016

600 km from point A.

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Sudhansu Bhushan replied | 10/02/2015

Why is Venus the hottest planet even though Mercury is closer to the sun?

Mercury is closest to the sun, this is true. However, because of its proximity to the sun it lacks an atmosphere. Mercury's gaseous molecules reached escape velocity long ago and the atmosphere was 'burned off' leaving a vacant wasteland of rock with a similar surface to the earth's moon. There...  more»
Why is Venus the hottest planet even though Mercury is closer to the sun?

Mercury is closest to the sun, this is true. However, because of its proximity to the sun it lacks an atmosphere. Mercury's gaseous molecules reached escape velocity long ago and the atmosphere was 'burned off' leaving a vacant wasteland of rock with a similar surface to the earth's moon. There is nothing to hold in solar radiation, thus is flies out into space.

Venus Venus is a different story. Its atmosphere is primarily composed of carbon dioxide - the primary green house gas -, which acts like a one-way door. The solar heat enters, but it cannot leave. Thus, an oven is created. This is why Venus has no water.Venus once had an aqueous environment, but because of climatic changes and intense heat.... it evaporated. «less

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Subhash replied | 12/02/2016

First you learn that high mountains are closer to sun that planes of earth, but higher altitudes are colder.

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Amitabh 06/01/2015 in  Class VI-VIII Tuition

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Ravi replied | 28/01/2015

Palm trees

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Anitha replied | 23/02/2015

palm tree

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Anu 04/01/2015 in  Class VI-VIII Tuition

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Manju replied | 19/02/2015

Go to website and Register as a tutor

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Ravi replied | 28/04/2015

Register as a tutor.

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Avinash replied | 27/01/2015

you need to contact students once you have a premium membership.

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Ravi replied | 28/01/2015

contact students of different class...

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Ravi replied | 28/01/2015

Make teaching in an interactive environment in a practical manner..

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Raj Kumar replied | 02/02/2015

Be friendly.

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Dr Ashok replied | 22/02/2015

Yes, it sure does! I was able to get

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Gyanendra replied | 13/04/2016

absolutely

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Jeewan 31/12/2014 in  Class VI-VIII Tuition

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Ravi replied | 28/01/2015

A gerund is a noun made from a verb adding "ing" .

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Roslin replied | 31/01/2015

When a verb acts as a noun in a sentence, it becomes a gerund. It ends in- ing and function as a noun. Praying, learning,writing.

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Jeewan 31/12/2014 in  Class VI-VIII Tuition

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Ravi replied | 27/01/2015

cockroach

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Anitha replied | 27/01/2015

cockroach

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Jeewan 31/12/2014 in  Class VI-VIII Tuition

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Ravi replied | 27/01/2015

Alpha centauri

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Dr Ashok replied | 05/02/2015

Our Closest Neighbor. The closest known planet to Earth outside of the Solar System circles Alpha Centauri B. Although its about the size of Earth, it's closer to the Sun than Mercury, making it uninhabitable.

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Annesha replied | 16/01/2015

A British accent does not necessarily imply impressive speaking. What you might prefer focussing on is the correct grammar, sentence construction and fluency. Even an Indian accent will do in that case.

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Ravi replied | 27/01/2015

Listen English movie sound in headset

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Ritu replied | 15/02/2016

the charge is nominal, and its a brand now

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Anurag replied | 28/02/2016

same to you

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Thirumangai 29/12/2014 in  Class VI-VIII Tuition

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Soniea 24/12/2014 in  Class VI-VIII Tuition

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Dr Ashok replied | 19/02/2015

Premium Membership enables you to contact students directly as well as students can contact you directly. UrbanPro has this facility

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Ravi replied | 28/04/2015

It enables you to contact students directly.

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Mamatha replied | 11/01/2015

good

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Deepak replied | 31/01/2015

Okay if I get a chance then I certainly watch your must see video.

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Rahul 24/12/2014 in  Class VI-VIII Tuition

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Ravi replied | 27/01/2015

WATCH NEWS..ENGLISH MOVIE..

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Deepak replied | 30/01/2015

If you really want to learn English properly for that you have to understand the basic structures and their various uses.Talking is conducive if you get a chance to talk with a good speaker.Reception is very important in English just try to watch different news channel of English like Ndtv or CNBC.Here you get pure neutralize accented English.If you know how to pronounce English...  more»
If you really want to learn English properly for that you have to understand the basic structures and their various uses.Talking is conducive if you get a chance to talk with a good speaker.Reception is very important in English just try to watch different news channel of English like Ndtv or CNBC.Here you get pure neutralize accented English.If you know how to pronounce English with the help of organ of speech then you will improve the speaking.if you get any new word then find its category and meaning.Focus on the use of words.Try to pen down some small paragraph or sentences.its very scientific you just write down a few questions and try to answer them in front of mirror. Also read English for sometime .if your way is perfect then within fifteen days it gives result «less

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Manu Sharma 23/12/2014 in  Class VI-VIII Tuition

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Premiertuition.com replied | 30/12/2014

Many active proteins including enzymes have been observed in human tears. Some of these proteins, including the enzymes lysozyme and amylase, are secreted by the lacrimal gland. Other enzymes found in tears are lysosomal in origin and the tissue source is not yet known.

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Ravi replied | 28/01/2015

lysozyme

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Deepak replied | 31/01/2015

Its very difficult but you can contact .

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Manju replied | 19/02/2015

Yes, you can contact students who have taken premium membership. Its visible on profile. You can find and contact them.

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Kirthika 23/12/2014 in  Class VI-VIII Tuition

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Avinash replied | 14/01/2015

Well, the answer to this question varies from branch to branch. If you have cleared in CSE/IT , then it is very less. The reason being there are very less vacancies in the PSUs for Comp. Science Grads. and the private sector generally values your performance in their interviews on the D-day(if you have fulfilled their qualification criteria). But, for core sector engineering graduates,...  more»
Well, the answer to this question varies from branch to branch. If you have cleared in CSE/IT , then it is very less. The reason being there are very less vacancies in the PSUs for Comp. Science Grads. and the private sector generally values your performance in their interviews on the D-day(if you have fulfilled their qualification criteria). But, for core sector engineering graduates, a good GATE score is really helpful to get a PSU job. Even some non- PSU core sector companies gives value to the the candidates having good GATE score. Bottom line :- for core sector engg. graduates very good score for GATE scorers. For CSE/IT, very limited scope(for rankers 1 to 100 max.). Its futile to go for GATE exam for a CSE graduate as he/she can get more package by concentrating on their core topics rather than wasting time preparing for GATE.(with personal experience). «less

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Ravi replied | 27/01/2015

GOVT. JOB IN PSU (PUBLIC SECTOR UNIT)

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Mani replied | 02/03/2016

Sargam

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Gangadhar replied | 07/04/2016

gangadhar dr

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Shilpa replied | 16/02/2015

only 9

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Virendra Kumar replied | 18/02/2015

9

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Roslin replied | 07/02/2015

Akash please send us your link.

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Chetan replied | 28/02/2016

LINK ????

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