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Conductivity of silicon increases in doping it with phosphorus explain

Posted by Kannappan Sam 7 years, 9 months ago

2 answers

H K 7 years, 9 months ago

Due to rise in electron density across the depletion layer the barrier potential across the semiconductor's p n junction increases and hence conductivity of semiconductors increase

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Go Pika 7 years, 9 months ago

Mobile electron increase for conduction

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ANSWER

How to convert methylamine to ethylamime......? With steps .

Posted by Akshita Gupta 7 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Om Gupta 7 years, 9 months ago

Yaar book me dekh le

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ANSWER

How to convert methylamine to ethylamime......? With steps .

Posted by Akshita Gupta 7 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is electrophile

Posted by Gaurav Kumar Singh 7 years, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Akhilesh Sitole 7 years, 9 months ago

electrophile is electron loving species

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Go Pika 7 years, 9 months ago

Single positive charge it has.

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ANSWER

Rate constant of a first order reaction is 2.3×10^-4(tow point three into ten power minus four).calculate the time taken for the completion of 2/3(two -third ) of the reaction??????? ? Pls answer fast

Posted by Shaista Shaista 7 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

what is annealing process

Posted by Rishabh Singh 7 years, 9 months ago

CBSE > Class 12 > Chemistry

9 answers

Go Pika 7 years, 9 months ago

I expected. Annealing in biology means what I've answered. Thats a process in polymerase chain reaction. Where multiple copies if gene of interest is synthetised invitro

0Thank You

.Ismat .Jamil 7 years, 9 months ago

Yes,I m a pcm student ,this is a bit explained in chemistry, bt the term 'annealing' is not coined there ,this is mentioned in abc+ chemistry

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Go Pika 7 years, 9 months ago

If you don't know what's primer then you must be a pcm student. The question was regarding biology(I took it so) .this chemistry stuff is new to me. Hope this is not in ncert

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.Ismat .Jamil 7 years, 9 months ago

But,I have understand annealing in chemistry as mentioned in my answer

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.Ismat .Jamil 7 years, 9 months ago

I don't know what is primer

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.Ismat .Jamil 7 years, 9 months ago

Annealing is a slow process of conversion of amorphous solid into crystalline solid by heating then slowly cooling of substance e.g. some glass object (amorphous) from ancient civilization are found to become milky(crystalline) in appearance I.e. due to heating in day & cooling at night (annealing)

1Thank You

Go Pika 7 years, 9 months ago

What}? You got what I said? You checked}?

1Thank You

Go Pika 7 years, 9 months ago

Annealing means joining the primers to the dna after that unzipping proses

1Thank You

Go Pika 7 years, 9 months ago

Hope you know primers

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Structure of lattice point or lattice site

Posted by Kalas Sahu 7 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

How can we identify that given compond is polar or non polar

Posted by Ankit Agrawal 7 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Distinguish between chloro form and trichloromethane

Posted by Rakshana Senthil 7 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Pranav Rastogi 7 years, 9 months ago

Both are same

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Distinguish between chloro benzene and benzyl chlorine

Posted by Rakshana Senthil 7 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Pranav Rastogi 7 years, 9 months ago

Chorobenzene is an aryl chloride while benzylchloride is an alkyl hallide.

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ANSWER

Distinguish between chloroform benzene and bromochlorine

Posted by Rakshana Senthil 7 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Is lecture in hindi? Translate

Posted by Khalid Mustafa 7 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Go Pika 7 years, 9 months ago

No USAGE'my teacher gave an 1/2 hour lecture of honesty today' . Hindi: भाषण. I think that's right. Something related to speech

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ANSWER

Sodium chloride is hard but sodium metal is soft.Why?

Posted by Kalas Sahu 7 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Ayush Piyush 7 years, 9 months ago

Coz NaCl is a crystal lattice structure ... According to property of solid state crystal is denser and hard

2Thank You

ANSWER

Copper is malleable and ductile. Why?

Posted by Kalas Sahu 7 years, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Rakshit Yadav 7 years, 9 months ago

As it is a metal

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Ayush Piyush 7 years, 9 months ago

Because copper is a metal ... And metals have significant property of malleability and ductility

1Thank You

ANSWER

Ionic solids are hard and brittle. Why?

Posted by Kalas Sahu 7 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Rakshit Yadav 7 years, 9 months ago

Due to strong force on attraction

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ANSWER

Define isotrophy.

Posted by Bushra Khan 7 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Plz...tell me the similarities between sand and common salt ......plz

Posted by Abhay Kumar 7 years, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Ayush Piyush 7 years, 9 months ago

Both are crystals

1Thank You

Go Pika 7 years, 9 months ago

Both are very small particles. Salt is found in sea sand is found on beach.

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OH is strong or weak nuleophile

Posted by Kapil Yadav 7 years, 9 months ago

CBSE > Class 12 > Chemistry

6 answers

Kapil Yadav 7 years, 9 months ago

Maybe

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Kapil Yadav 7 years, 9 months ago

OH is strong nucleophile

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Go Pika 7 years, 9 months ago

Maybe

1Thank You

Go Pika 7 years, 9 months ago

As oxygen is more electro negative

1Thank You

Go Pika 7 years, 9 months ago

Because polarity is high

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Go Pika 7 years, 9 months ago

Strong I say

1Thank You

ANSWER

What is contact process

Posted by Pooja U 7 years, 9 months ago

CBSE > Class 12 > Chemistry

2 answers

Go Pika 7 years, 9 months ago

Sulphuric acid stuff. See under the topic suphur in our book.

0Thank You

Devraj Pahariya 7 years, 9 months ago

Theose processes which happen in contact of other are called contact process

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optically active 2- bromobutane racemises when treated with NaI

Posted by Faizan Yusuf 7 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

optically acrive 2- bromobutane racemises when treated with NaI

Posted by Faizan Yusuf 7 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Which is more perfect crystals or amorphous and why

Posted by Sffg Fghh 7 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Go Pika 7 years, 9 months ago

Crystals. Long range order.

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ANSWER

Posted by Sahil Sharma 7 years, 9 months ago

CBSE > Class 12 > Chemistry

4 answers

Go Pika 7 years, 9 months ago

0Thank You

Ritika Thakur 7 years, 9 months ago

1Thank You

Vishal Malviya 7 years, 9 months ago

8??

1Thank You

Go Pika 7 years, 9 months ago

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ANSWER

What is triple point?

Posted by Devraj Pahariya 7 years, 9 months ago

CBSE > Class 12 > Chemistry

6 answers

Go Pika 7 years, 9 months ago

#water

0Thank You

Go Pika 7 years, 9 months ago

At one time we see it's solid, liquid and gas state

1Thank You

Khushbu Mishra 7 years, 9 months ago

Triple point of water can be defined as the three state i. e. (ice, water, vapour) exists.

1Thank You

Go Pika 7 years, 9 months ago

Ice

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Amit Kumar 7 years, 9 months ago

Where all 3 states of matter co exist

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Go Pika 7 years, 9 months ago

Fusion?

1Thank You

ANSWER

How many( cr ------o) bond present in dichromateion

Posted by Krishna Kishore Kishore 7 years, 9 months ago

CBSE > Class 12 > Chemistry

4 answers

Go Pika 7 years, 9 months ago

Dichromate -- Cr2O7(2-)

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Go Pika 7 years, 9 months ago

He asked for dichromate ion. I think you said for CrO4(2-)

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Devraj Pahariya 7 years, 9 months ago

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Go Pika 7 years, 9 months ago

1Thank You

ANSWER

What about the stability of carbonium ion?

Posted by Lucky Tyagi 7 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

IF we add sugar in water and boils it at 160 degree celcius then what happens

Posted by Anshuman Saxena 7 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

all concept of carbon

Posted by Dev Raj 7 years, 9 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Define average rate and instantaneous rate graphically

Posted by Bhaskar Gogoi 7 years, 9 months ago

CBSE > Class 12 > Chemistry

1 answers

Go Pika 7 years, 9 months ago

Slop gives you average and a particular point on the line will give you intantaneois i.e rate at that instance

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Haloalkane is less reactive than haloarene.Why?

Posted by Ashutosh Kumar 7 years, 9 months ago

CBSE > Class 12 > Chemistry

4 answers

Go Pika 7 years, 9 months ago

Due to partial double bond haloarens are less reactive

0Thank You

Shashank Shekhar Dwivedi 7 years, 9 months ago

Due to double bond

1Thank You

Go Pika 7 years, 9 months ago

Generally haloalkanes are more reactive :/

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Go Pika 7 years, 9 months ago

Toward SN1?

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