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Evaluation of drinking water from various sources

Posted by Nikhil Kishore Sharma 4 years ago

CBSE > Class 12 > Chemistry

1 answers

Jaya Shree 4 years ago

These are the different types of water sources around the globe and how they each play a role in what comes out of your home's sink. Surface Water Resources. ... Groundwater Resources. ... Stormwater Resources. ... Wastewater Resources. ... Saltwater Resources. ... Ice Cap Water Resources.

ANSWER

Dislocation defect is also known as

Posted by Harsh Tiwari 4 years ago

CBSE > Class 12 > Chemistry

5 answers

Deepak Kumar 4 years ago

Frenkel defect is the correct answer

Shinchan Gaming 4 years ago

Frankel

Sanju Tanwar 4 years ago

Frenkel defect

Shreya Chatterjee 4 years ago

Frenkel defect

Nikhil Kishore Sharma 4 years ago

Frenkel defect

ANSWER

Why do solid have a definite volume?

Posted by Milan Gr 4 years ago

CBSE > Class 12 > Chemistry

4 answers

?Tamanna ?? 4 years ago

because the molecules in solid are closely packed and in fixed positions.

Diya Bhati 4 years ago

Because of small intermolecular distance they are held closer, hence greater force of attraction which results in definite volume and shape

Shinchan Gaming 4 years ago

High force of interaction between molecular

Kunal Jadhav 4 years ago

Because solid have strong intermolecular space..

ANSWER

What are antichlors

Posted by Mukkamal Maan 4 years ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Haloalkanes and haloarenes

Posted by Manjit Godara 4 years ago

CBSE > Class 12 > Chemistry

1 answers

Piyush Baghel 4 years ago

Haloalkanes and haloarenes are the hydrocarbons in which one or more hydrogen atoms have been replaced with halogen atoms. The primary difference between haloalkanes and haloarenes is that haloalkanes are derived from open-chain hydrocarbons (alkanes) whereas haloarenes are derived from aromatic hydrocarbons

ANSWER

High electronic configuration is

Posted by Piyush Baghel 4 years ago

CBSE > Class 12 > Chemistry

4 answers

Dishant Rajput 3 years, 11 months ago

Do you mean Electronegativity, If I am right then it is flourine.

Priti Choudhury 4 years ago

Oganesson (118)

Bla Re 4 years ago

Florine (-1)

Piyush Baghel 4 years ago

Flourine

ANSWER

point defect

Posted by Aashima Sharma 4 years ago

CBSE > Class 12 > Chemistry

5 answers

Nikita Choudhary 3 years, 11 months ago

Zero dimensional defect

Pratham Garg 4 years ago

When the irregularity is found near a point is called point defect

Akash Thakur 4 years ago

When the irregularity is found near a point is called point defect

Kuldeepak Chaturvedi 4 years ago

Defect at some point generally at the atom..

Sita Kumari 4 years ago

Expected MCQ for term 1 chemistry

ANSWER

Which one is explosive in following Pcl3 Mgcl2, Sbcl3, Ncl3

Posted by Hari Nishad 4 years ago

CBSE > Class 12 > Chemistry

5 answers

?Tamanna ?? 4 years ago

Ncl3

Shashank 11 4 years ago

Ncl3

Shinchan Gaming 4 years ago

Mgcl2 as it is very reactive

Anuuuu Anu 4 years ago

Ncl3,is correct answer

Piyush Baghel 4 years ago

MgCl2

ANSWER

How to prepare for organic chemistry...I don't know the basics of class 11th and there are so much reactions that I'm finding it really hard to just remember it !

Posted by Shreeya ? 4 years ago

CBSE > Class 12 > Chemistry

3 answers

Sachin Kumar 4 years ago

First of you must learn about GOC(general organic chemistry) and then starts organic reactions

Yash Rahadve 4 years ago

First start 11th organic in one shot videos on youtube then start 12th organic chemistry . For better understandings?

Aseem Mahajan 4 years ago

Learn them. Write each organic equation 4-5 times . Means take a chapter and write it 4-5 times. You will get them

ANSWER

Test for saturation

Posted by Akshat Raghuwanshi 4 years ago

CBSE > Class 12 > Chemistry

1 answers

Aseem Mahajan 4 years ago

Test for unsaturation - bromine test

ANSWER

Explain defects ? And type of defects

Posted by Azra Parveen ?? 4 years ago

CBSE > Class 12 > Chemistry

2 answers

Bla Re 4 years ago

Any irregularities arrangement of particles in crystalline site is called defect

Kuldeepak Chaturvedi 4 years ago

Dislocation of constituent particles from its original position is defect Type 1. Stoichiometry 2.non stoichiometry 3. Impurity

ANSWER

Name the compound in IUPAC
CH₃ – CH = C = C

Posted by Aseem Mahajan 4 years ago

CBSE > Class 12 > Chemistry

4 answers

Dishant Rajput 3 years, 11 months ago

Buta—1,2–dienal

?Tamanna ?? 4 years ago

pent-3-en-1-yne

Piyush Baghel 4 years ago

1 methyl propane

Aseem Mahajan 4 years ago

CH_{3 – CH = C = C = O

Please note the correction in the question}

ANSWER

How can understand stoichiometric defects ? Explain

Posted by Azra Parveen ?? 4 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Bla Re 4 years ago

Cation and anion ratio same

Lokesh Nc 4 years, 1 month ago

Find 2 possitive numbers such that x+y=60and xy`3is maximum

ANSWER

Find the oxidation state of S in H2S

Posted by Harsh Kheveriya 4 years, 1 month ago

CBSE > Class 12 > Chemistry

3 answers

Dishant Rajput 3 years, 11 months ago

—2

Azra Parveen ?? 4 years, 1 month ago

-2

Rifat ✍️ 4 years, 1 month ago

2(+1)+x=0 Thus,x=-2 so the oxidation state of sulphur is -2.

ANSWER

determine the molarity of kmno4 solution by titrating it against m/10 of oxalic acid solution

Posted by Coolz Official 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Devender Singh 4 years ago

It is practical of class 12 chemistry

ANSWER

The melting point of group 15 elements is.

Posted by Azra Parveen ?? 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Aseem Mahajan 4 years, 1 month ago

Increasee in the order:
N < P < Bi < Sb < As

ANSWER

What mean haloarenes

Posted by Richa Singh 4 years, 1 month ago

CBSE > Class 12 > Chemistry

5 answers

Azra Parveen ?? 4 years, 1 month ago

But why

Aseem Mahajan 4 years, 1 month ago

Benzoyl is nothing its benzoyal chloride.

Ankit B 4 years, 1 month ago

Halo means halogen or arene means aryl .aryl is the name for aromatic closed rings (like benzene ).which when treat when react with halogen (f,cl, br,I) form haloarene

Azra Parveen ?? 4 years, 1 month ago

Aryl halide, Ex, benzene , benzoyl etc

Sanket ... 4 years, 1 month ago

an aryl halide

ANSWER

Reducing and non reducing sugar with example

Posted by Neeraj Bora 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Tanvir Singh 😊😀😊 4 years, 1 month ago

Reducing sugar:glucose Non reducing :sucrose

ANSWER

What is the Geometry of a Matchbox

Posted by Deepak Godara 4 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Nikita Choudhary 3 years, 11 months ago

Orthorhombic

Rifat ✍️ 4 years, 1 month ago

Orthorhombic ---a,b,c sides are not equal but angle alpha, beta, gamma are all 90°

ANSWER

Which of following group 15 element doesn't show allotropy ?????? 1 - N. 2 -Bs. 3- As. 4- P.

Posted by Sakshi Dixit 4 years, 1 month ago

CBSE > Class 12 > Chemistry

5 answers

Sm . 4 years, 1 month ago

N

Pk . 4 years, 1 month ago

N

Radhika Dalal 4 years, 1 month ago

Nitrogen because it have small size and due to absence of "d" orbital .

Nikita Yadav 4 years, 1 month ago

Nitrogen

Account Deleted 4 years, 1 month ago

1-N

ANSWER

Oxide AxOy has molecular weight 288u. Atomic weight of A and O respectively are 12 and 16. The formula of compound if weight of A is by 50% is

Posted by Mr Perfect Army 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Mr Perfect Army 4 years, 1 month ago

I don't know please tell me too

ANSWER

What is Anomalous behaviour of oxygen

Posted by Sneha Ghangas 4 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Sia ? 4 years, 1 month ago

Oxygen is diatomic whereas others are polyatomic. Oxygen is a gas while others are solid. Oxygen is paramagnetic while others are diamagnetic.

Swastik . P 4 years, 1 month ago

And also Oxygen has higest ionization enthalpy and electronegativity amoung rest of its grp members

ANSWER

How can you prepare 250ML of 0.05n naoh solution

Posted by Attamchi Nengminza 4 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is unit cells and their types ?

Posted by Soniya Chauhan 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 4 years, 1 month ago

A unit cell is said to be the smallest repeating unit of the crystal lattice in the living organism, which is also said to be the building block of the crystal. There are three types of unit cells present in nature, primitive cubic, body-centered cubic, and face-centered cubic.

ANSWER

CIF3 exist but FCL3 does not.why

Posted by Anuj Rana 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 4 years, 1 month ago

Chlorine has vacant d orbitals hence it can show an oxidation state of +3. Fluorine has no d orbitals, it cannot show positive oxidation state. Size of chlorine atom is greater due to smaller size of fluorine atom it cannot accommodate three large chlorine atoms. Hence ClF₃ exists but FCl₃ does not exist.

ANSWER

What do we mean by lattice site?

Posted by Pk . 4 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Sia ? 4 years, 1 month ago

Lattice site is the position of constituent particles, atoms, molecules, or ions in a crystal lattice. Therefore, a lattice site contains a series of points that has an arrangement of a specific pattern with high symmetry.

Sm . 4 years, 1 month ago

Position of constitue atom in a crystal lattice

ANSWER

Name of the amino acid ,which has phenyl -OH group? 1.Lysine, 2.Arginine, 3.proline, 4.Tryosine

Posted by James Pradhan 4 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Preeti Dabral 4 years, 1 month ago

Tryosine

Sneha Ghangas 4 years, 1 month ago

4

ANSWER

What is meta,para & ortho- position ?

Posted by James Pradhan 4 years, 1 month ago

CBSE > Class 12 > Chemistry

2 answers

Aseem Mahajan 4 years, 1 month ago

Position in aromatic ring with respect to a substituent or group. If the substituent is numbered 1, then 2 and 6 are ortho position; 3 and 5 are meta position; 4 is para position

Simran Kumari 4 years, 1 month ago

This is the position in benzene ring and para is major product formed and ortho is minor product formed other then meta position.

ANSWER

What is the atomic number of calcium?

Posted by Sai Nath 4 years, 1 month ago

CBSE > Class 12 > Chemistry

5 answers

Nikita Sahu 4 years, 1 month ago

15

Krishan Kant 4 years, 1 month ago

20

Priyanshu Kumar 4 years, 1 month ago

Its atomic mass is 40

Simran Kumari 4 years, 1 month ago

20

James Pradhan 4 years, 1 month ago

20

ANSWER

The volume of 72 gm water vapour N.T.P is

Posted by Alok Singh 4 years, 1 month ago

CBSE > Class 12 > Chemistry

1 answers

Aseem Mahajan 4 years, 1 month ago

90 L

ANSWER

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