Incorrect URL accessed!!!!

ANSWER

Which noble gas is used in filling balloons for meteorological observation?

Posted by Shubhi Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Jin Kazama 8 years, 1 month ago

He ?

Tanay Sharma 8 years, 1 month ago

Helium(He)

Yash Mishta 8 years, 1 month ago

nitrogen gas

4Thank You

ANSWER

F2 has lower bond dissociation enthalpy than cl2 why?

Posted by Shubhi Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Tanvi Singh 8 years, 1 month ago

Due to repulsion among non bonding pairs of electrons.

ANSWER

What is colliod

Posted by Navneet Veerwal 8 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Show that a first order solution

Posted by Ashim Bormon 8 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is sol

Posted by Chemistry Chemistry 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Aman Jha 8 years, 1 month ago

A sol is a type of colloid in which solid particles are suspended in a liquid. The particles in a sol are very small. The colloidal solution displays the Tyndall effect and is stable. Sols may be prepared via condensation or dispersion. Adding a dispersing agent may increase the stability of a sol. One important use of sols is in the preparation of sol-gels.

ANSWER

Polymers chapter se kisi bhi chiz ka uses important hai kya puchte hai kya board exam me ?

Posted by Trishala Vijaywargiya 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Ishu Chouhan 8 years, 1 month ago

Yes ,must study ,do not neglect anything

ANSWER

How the supersonic jet aeroplane are responsible for the depletion of ozone layer?

Posted by Shubhi Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Nikita Mishra 8 years, 1 month ago

Bcz they release nitrogen oxide which combines with ozone

ANSWER

Which form of the iron is the purest form of commercial iron.?

Posted by Shubhi Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Pankaj Sihag 8 years, 1 month ago

Wrought iron

Shashank Sen 8 years, 1 month ago

Magnetite

ANSWER

What is the role of silica in the extraction of copper?

Posted by Shubhi Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Pankaj Sihag 8 years, 1 month ago

It act as flux which slag of iron impurities as iron silicate

ANSWER

Indicate the principle behind the method used for the refining of zinc?

Posted by Shubhi Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

The presence of nitro group (-NO2) at o/p position increase the reactivity of haloarenes towards nucleophilic substitution inactive?

Posted by Shubhi Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Racemic mixture is optically inactive.?

Posted by Shubhi Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Puneet K 8 years, 1 month ago

Racemic mixture is having both dextrorotatory and leavorotatory forms and hence the net rotation of plane polarised light comes out to be zero.

Ayushi Jaiswal 8 years, 1 month ago

Because it has both dextro and levo structure hence cancel out each other net moment results out to be 0

ANSWER

Write the name of vitamin whose deficiency cause bone deformities in children?

Posted by Shubhi Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Puneet K 8 years, 1 month ago

Calciferol or vitamin D

ANSWER

how to write swart's rxn

Posted by Bakhshish Laddy 8 years, 1 month ago

CBSE > Class 12 > Chemistry

9 answers

Aisha Grewal 8 years, 1 month ago

Yar tu nam bdl l na..... Mmmmmmmwwwwwww

Aisha Grewal 8 years, 1 month ago

Bilkul vo to finklestein rxn h....... Sorry

Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 8 years, 1 month ago

R-Br + AgF ----------> RF +AgBr ............... Ye sahi hai

Mmmmmmmmmmmmmmmmmmmm Wwwwwwwwwwwwwwwwwwww 8 years, 1 month ago

Galat hai

Aisha Grewal 8 years, 1 month ago

Shi h

Jin Kazama 8 years, 1 month ago

NaX + AgI -----> NaI + AgX ?

Jin Kazama 8 years, 1 month ago

Sorry

Aisha Grewal 8 years, 1 month ago

Y ni h

Jin Kazama 8 years, 1 month ago

R-X + 2Na + X-R ----> R-R + 2NaX ?

ANSWER

Copper which crystallizes as a face – centred cubic lattice has a density of 8.93g/cm3 at 20o C. calculate the length of the unit cell.

Posted by Ruchita Jaiswal 8 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

some substance can act bothh as colloids and crystalo8ds

Posted by Niranjan Panjiyar 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Jin Kazama 8 years, 1 month ago

Depend on type of disperse medium

ANSWER

what happen orthophosphorous heated

Posted by Niranjan Panjiyar 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Akash Agarwal 8 years, 1 month ago

It undergoes disproportionation reaction to form PH3 n H3PO4

ANSWER

Limitations of Henry law

Posted by Vijeta Kanwar 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Jin Kazama 8 years, 1 month ago

this law is applicable only for sufficiently dilute solution

ANSWER

Product when ammonia is treated with ZnSO4

Posted by Mangangamba Thokchom 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Jin Kazama 8 years, 1 month ago

[Zn(NH3)4]SO4 complex comp. banega ?

ANSWER

What do u mean by solid

Posted by Shanu Choubey 8 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Mahima Kumari 8 years, 1 month ago

Packing of atoms closest to each other

Jin Kazama 8 years, 1 month ago

ठोस ?

4Thank You

ANSWER

ClF3 exists but FCl3 do not why

Posted by Lovepreet Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Jasmine Chhikara 8 years, 1 month ago

Because fluorine is more electronegative than chlorine. Hence it cannot acquire positive charge.

Atishay Jain 8 years, 1 month ago

Because cl has d subshell but F not

ANSWER

Is it important to study the classification of drugs in chemistry in every day life?

Posted by Trishala Vijaywargiya 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Jin Kazama 8 years, 1 month ago

Pad le kya pata a jaye ?

ANSWER

Di oxygen is a gas but sulphur is a solid give reason

Posted by Maloo Maloo 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Jin Kazama 8 years, 1 month ago

Weak van der walls force in oxygen and sulphur exist as F6 ya F8 so it is solid ?

ANSWER

Why is charcoal activated before use

Posted by Sumaiya Mir 8 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Pencillin is which type of antibiotic??

Posted by Himanshu Jain 8 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Balbir Singh 8 years, 1 month ago

Penicillin G is narrow spectrum antibiotic

Madiha Faraz 8 years, 1 month ago

Narrow spectrum antibiotic

ANSWER

define vant hoff factor

Posted by Rakshak Dalmia 8 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Shivansh Gupta 8 years, 1 month ago

It is the ratio of abnormal colligative property and normal colligative property

Jin Kazama 8 years, 1 month ago

i ?

ANSWER

What is d d transition

Posted by K S Asna 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Sabhya Sood 8 years, 1 month ago

Splitting of d orbitals due to the presence of a strong ligand(as per crystal field theory)

ANSWER

M dinitrobenzene + NH4HS

Posted by Pritam Chowdhury 8 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Lyophilic Sol is more stable than Lyophobic Sol?

Posted by Shubhi Singh 8 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Vineet Gupta 8 years, 1 month ago

Stabilty of lyophobic sol is only due to similar charge on particles , but in lyophillic stability is both due to presense of simmilar charge and the strong attractive forces b/w dispesed phase and dispersion medium