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Phosphorus trichloride contains 22. 57% of phosphorus, phosphine contain 91. 18%of phosphorus while hydrogen chloride gas contain 97.23% of chlorine.

Posted by Kirandeep Cheema 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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What is saponification reaction

Posted by Prateek Chawla 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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Why should we keep hand in running water when concentrated sulphuric acid falls on it

Posted by Nitin Kumar 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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What is ppm in mass.

Posted by Samidha Singh 7 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Jaswanth Sai 7 years, 8 months ago

PPM [MASS] = mass of a component / total volume of solution * 10 power 6

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Co2 is a gas while Si02 is solid at room temperature. Why?

Posted by Shubham Nirala 7 years, 8 months ago

CBSE > Class 11 > Chemistry

2 answers

Anjali Singh 7 years, 8 months ago

1.Because co2 contains simple molecular structure whereas sio2 has gaint molecular structure. 2.

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Abhi Kumar 7 years, 8 months ago

Its simple.

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What is the symbol of hydrogen? Is it H or H2?

Posted by Akshita P 7 years, 8 months ago

CBSE > Class 11 > Chemistry

4 answers

Shreya Gour 7 years, 8 months ago

Since it is found in form of molecule its symbol is H2

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Priyam Pandey 7 years, 8 months ago

H is element symbol H2 is molecule symbol

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Anjali Singh 7 years, 8 months ago

It's H

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Ashutosh Lamba 7 years, 8 months ago

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ncert 1.24

Posted by Aryan Gupta 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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Compartment paper

Posted by Pawan Singh 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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What is phenomenal

Posted by Kunal Singh 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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Calculate the number of electrons, proton and neutrons in 40k+

Posted by Bishal Sen 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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Bragg law

Posted by Faidal Khurdhid 7 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Prince Singh 5 years, 8 months ago

mbfgufsygdedhdjhf

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Write all the four quantum numbers for the last electron of potassium atom

Posted by Rabin Fernandez 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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Convertion of methane to methanol

Posted by Ritesh Kumar Saraswat 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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What happen when acetylene is passed over red hot tube

Posted by Nitin Kumar 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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Define ionse radii

Posted by Nitin Kumar 7 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Geet Anjali 7 years, 8 months ago

Ionic radius, rion, is the radius of an atom's ion in ionic crystals structure. Although neither atoms nor ions have sharp boundaries, they are sometimes treated as if they were hard spheres with radii such that the sum of ionic radii of the cation and anion gives the distance between the ions in a crystal lattice.

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Difference between all types of crystalline solid

Posted by Nitish Singh 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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What us meant by common ion effect

Posted by Shakib Saifu 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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Calculate molality ,molarity and molar fraction of KI if density of 20%(mass/mass)aqueos KI solution is 1.202 gram per ml. Please give the complete solution

Posted by Aaloo Chaudhary 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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Calculate the molarity of water if density is 1000g per m3.please givecthe complete solution

Posted by Aaloo Chaudhary 7 years, 8 months ago

CBSE > Class 11 > Chemistry

0 answers

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Different between chemical chang and physical chang

Posted by Sajal Sanadhaya 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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Mention one application of solubility product.

Posted by Gunjan Rai 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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A colourless crystalline compond has the following percentage composition.sulphur 24.24%,nitrogen 21.21,% ,hydrogen 6.06%,and the rest is oxygen.detrrmine the empirical formula of compound.if the molecular mass is 132 what is the molecular formula of the compound

Posted by Saurabh Sharma 5 years, 5 months ago

CBSE > Class 11 > Chemistry

1 answers

Prakriti Mazumdar 5 years, 2 months ago

answer?

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Calculate the wavelength of the second line of lyman series in hydrogen spectra

Posted by Debashis Kocho 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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What is stoichiometric

Posted by Mayank Bharti 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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How many photon are in wavelength of 4000 angstrom where 1 joule of energy is there

Posted by Shruti Gupta 7 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Yuraj Obreo 7 years, 8 months ago

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calculate the energy associated with the first orbit of He+2

Posted by Utkarsh Shukla 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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Which is best side book for chemistry?

Posted by Prakhar Kunwar Sinha 7 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Manisha Jangra 7 years, 8 months ago

Pradeep in these book is ncert as well as extra information for revesion

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Find electrons protons and neutrons in NH3

Posted by Kumkum Kashwan 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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Why does so3 act as an electrophile

Posted by Ashutosh Pandey 7 years, 8 months ago

CBSE > Class 11 > Chemistry

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AgCl is white but AgI is yellow why?

Posted by Abhijeet Jagrawat 7 years, 8 months ago

CBSE > Class 11 > Chemistry

1 answers

Adrija Pal ? 7 years, 8 months ago

AgCl is white while AgI is yellow in colour. As size of anion increases the polarisation increases and hence colour intensity of the compound increases. Hence AgCl forms white colour and AgI yellow colour.

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