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Identify the compound that on hydrogenation produces an optically active compound from the following compounds: 3-Bromopent-3-ene OR 4-Bromopent-2-ene

Posted by Arya Sharma 4 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

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Calculate the freezing point of aqueous solution 0.05m solution of Al2(So4)3 assuming it is completely ionized. [Kf= 1.86k kg/mol, Molar Mass of Al=27g/mol and S=32g/mol].

Posted by Arya Sharma 4 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

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Write IUPAC name of [Crcl2(H2O)4]^+ and explain it's hybridization.

Posted by Arya Sharma 4 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Divyanka Krishna 4 years, 3 months ago

It's Tetraaquodichloridochromium(III)ion {Whenever there is a charge outside the coordination sphere then put ion in the name} Hybridiai - octahedral Reason bonded to 4 water molecules and 2 chlorine hence 4+2= 6

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Black Panther 4 years, 4 months ago

Tetra aqua chloro chromate.

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Bond angle in ph4' is higher than in ph3

Posted by Jayant Patidar 4 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Divyanka Krishna 4 years, 3 months ago

In ph3 there is presence of lone pair which causes repulsion between bond pair and lone pair increasing the bond angle. In ph4+ bond angle is smaller due to no lone pair and repulsion between bond pair-bond pair is less than lone pair- bond pair.

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Calculate the molality of NaCl in an aqueous solution in which the mole fraction of NaCl is 0.100 ??

Posted by Priti Sangwan 4 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Ak Kumar 4 years, 4 months ago

0.34 is the ans

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Karan Gariya 4 years, 4 months ago

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Reaction of acetone to convert into chloro acetic acid

Posted by Nisha Nisha 4 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Do face centred cells create vacancy

Posted by Anjali Sharma 4 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Name the least symmetric primitive Unit cell type?

Posted by Rohan Tarafdar 4 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What are the similarities betwwen physisorption and chemisorption

Posted by Shraddha Verma 4 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Giri Prasanth 4 years, 4 months ago

1) Bothh physisorption and chemisaoption are surface phenomenon. 2) Both are directly proportional to surface area. 3) Both are exothermic.

2Thank You

Aayush Raj 4 years, 4 months ago

Physisorption Chemisorption 1. Physisorption is non- specific in nature. It involves Waal’s interaction between adsorbate and adsorbent.1. Chemisorption is highly specific in nature as it involves chemical bond formation between adsorbate and adsorbent. 2. On increasing the temperature physisorption decreases.2. On increasing the temperature chemisorption increases. 3. Physisorption is reversible in nature.3. Chemisorption is irreversible in nature. 4. In the case of physisorption, the enthalpy change is small. 4. In the case of chemisorption, the enthalpy change is high. One similarity between physisorption and chemisorption both increases with increase in surface area.

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What do you mean by tetrahedral void

Posted by Utkarsh Singh 4 years, 4 months ago

CBSE > Class 12 > Chemistry

4 answers

Shraddha Verma 4 years, 4 months ago

A void surrounded by 4 atoms

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Diksha Garg 4 years, 4 months ago

The void which is made by 2 octahedral void or 6 spheres.

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Giri Prasanth 4 years, 4 months ago

https://youtu.be/B1JzFAD1GAo I think this video help you to understand the concept more better.

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Anuradha Patwari 4 years, 4 months ago

0.225 R And R is radius of sphere

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Gold atom crystallizes in a F.C.C structure. Atomic radius of the metal is 100pm. What is the length of the side of the unit cell, how many gold atoms are present in 1cm^3 gold crystal ?

Posted by Akankshya Mishra 4 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Assertion : Albumin is a globular protein. Reason : Polypeptide chain coils around to give a straight chain.

Posted by Rajnandan Patil 4 years, 1 month ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Calculate the emf of the cell Ag(s)I Ag+ (aq, 1M)II Cu2+ (aq, 1M) I Cu(s) And predict the cell reaction. EoAg2+/Ag = +0.80V, EoCu2+/Cu = +0.34V. Predict whether this cell is feasible or not, if not write the feasible cell using these electrodes.

Posted by Sri Karpaga Vinayagam Sri Karpaga Vinayagam 4 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

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Is Ullmann reaction in syllabus for 2020-21 batch or not? If yes , then what is the page no. In NCERT .plz tell me i need this

Posted by Mr. Badmash 4 years, 4 months ago

CBSE > Class 12 > Chemistry

5 answers

Devil ? 4 years, 4 months ago

@Badmash ... Jr ab kya krna pdkr 12 isse acha 11 pdo ... For competitive exams

2Thank You

Mr. Badmash 4 years, 4 months ago

@ Devil . Kya kre tum nhi pad rhe to tumhari kami puri kr rhe h??

1Thank You

Devil ? 4 years, 4 months ago

Bhai tum abhi vi pd rhe ho kya ?☘️?

1Thank You

Yash Gupta 4 years, 4 months ago

5Thank You

Nik . 4 years, 4 months ago

Nope

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A certain sample of cuprous sulphide is found to have a composition of Cu1.92S because of incorporation of Cu2+ in the lattice.What is the ratio of Cu2+ to Cu+?

Posted by Pranjal Sharma 4 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

Posted by Aviral Shukla 4 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Atharva Verma 4 years, 4 months ago

Hii

0Thank You

Tanvi Sharma 4 years, 4 months ago

H??

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An organic compound A (CsHa) on hydration in presence of H2SO4/HgSO4 gives compound B(C3HO). Compound B gives white crystalline product D with sodium hydrogensulphite.it gives negative Tollen's test and positive iodoform test. On drastic oxidation B gives compound C along with formic acid. Identify compounds A,B and C and explain all the reactions.

Posted by Mayur Buchkul 4 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Riya Sharma 4 years, 4 months ago

Compound B ( propanone ) is a ketone therefore Fehling's test and Tollen's tests are negative.

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Assertion: presence of equal and similar charges on colloidal particles is largely responsible in providing

Posted by Dhanusri Velayutham 4 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Senthil Kumar 4 years, 3 months ago

dfg

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Assertion : the presence of equal and similar

Posted by Dhanusri Velayutham 4 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 4 years, 4 months ago

Please ask question with complete information.

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Arrange the following compounds in increasing order of their acid strength with reason Propan-1-ol, 2,4,6-trinitrophenol, 3-nitrophenol, 3,5-dinitrophenol, phenol, 4-methylphenol.???

Posted by Kirti Sharma? 4 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Arman Gupta 4 years, 4 months ago

PROPAN-1-OL <<< 4-METHYL PHENOL <<< PHENOL <<< 3-NITROPHENOL <<< 3,5-DINITROPHENOL <<< 2,4,6-TRINITROPHENOL... THIS IS BECAUSE ALCHOHOL IS ALWAYS LESS ACIDIC THAN PHENOLS... ALSO NITRO GROUP AT META POSITIONS WITHDRAWS ELECTRONS ONLY BY INDUCTIVE EFFECT AND AT PARA POSITIONS WITHDRAW ELECTRONS BY REASONANCE AS WELL AS INDUCTIVE EFFECT...FINALLY METHY GROUP IS AN ELECTRON DONATING GROUP WHICH INCREASES ELECTRON DENSITY ON OXYGEN AND THUS REDUCES THE ACIDITY...

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Calculate amount of benzoic acid needed for making 250 ml of0.15 m solution in methanol

Posted by Anshveer Singh 4 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 4 years, 4 months ago

0Thank You

ANSWER

In tetrahedral void coordination number is 4 how explain If tetrahedral void is made from 4 atoms if we consider any one atom to touch it they're 3

Posted by Magan Garval 4 years, 4 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

What is IUPAC?

Posted by Nancy Gupta 4 years, 4 months ago

CBSE > Class 12 > Chemistry

3 answers

Magan Garval 4 years, 4 months ago

International union of pure and applied chemistry

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Rahul Kumar Keshri 4 years, 4 months ago

It is a group which one of the function is to generalise the study of chemistry

3Thank You

Anuradha Patwari 4 years, 4 months ago

International union of pure and applied chemistry

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Distinguish between butan-1-ol and butan-2-ol

Posted by Siddharth Singh 4 years, 4 months ago

CBSE > Class 12 > Chemistry

3 answers

Divyansh Dev 4 years, 4 months ago

It can be distinguish by idoform test

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Anuradha Patwari 4 years, 4 months ago

Butan2ol will form ketone c=o

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Anuradha Patwari 4 years, 4 months ago

Butan1ol will form aldehyde cho

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The boiling point elevation of 0.6 g acetic acid in 100 g benzene is 0.1265 k. What conclusion can you draw about the state of solute in solution? Molar elevation constant for benzene is 2.53 deg per molar

Posted by Shah Vraj 4 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Sanjay K 4 years, 4 months ago

solute must be non volatile

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ANSWER

Can the same solute have i>1and i<1 in different solvents give example

Posted by Kavitha Kosaraju 4 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Mohit Bansal 4 years, 4 months ago

Yes

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ANSWER

What is the IUPAC name of complex [NiCl4]^2+

Posted by Pallavi Anand 4 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 4 years, 4 months ago

tetrachloronickelate(II) ion

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ANSWER

Give the plausible explanation for the following . 1. Glucose doesn't give 2,4‐DNP test. 2. The two strand in DNA are not identical but are complementary

Posted by Harshvardhan Gupta 4 years, 4 months ago

CBSE > Class 12 > Chemistry

2 answers

Anuradha Patwari 4 years, 4 months ago

Glucose don't gives 2,4 dnp test bec it doesn't react with Schiff reagents

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Anuradha Patwari 4 years, 4 months ago

The two dna strand are not identical bec the nitrogenous bases position are different on both strand and complementary bec the nitrogenous bases are bonded with their complent one and are not changed

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The surface charge density for a spherical conductor is 2mu C/m^2. Calculate electric potential of the conductor assuming it's radius to be 0.2m

Posted by Mono .... 4 years, 4 months ago

CBSE > Class 12 > Chemistry

3 answers

बेबि बीच 4 years, 4 months ago

Find V using E

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बेबि बीच 4 years, 4 months ago

E.dA= q/ \epsilon_{\circ}

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बेबि बीच 4 years, 4 months ago

net charge=2muC×0.2×0.2×pi

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ANSWER

Can anyone give me the syllabus for jee mains

Posted by Nik . 4 years, 4 months ago

CBSE > Class 12 > Chemistry

1 answers

Mohit Bansal 4 years, 4 months ago

Mathematics Syllabus: Sets, Relations & Functions, Matrices & Determinants, Permutations & Combinations, Complex Numbers & Quadratic Equations, Binomial Theorem, Mathematical Induction, Limit, Sequences & Series, Differential Equations, Integral Calculus, Continuity & Differentiability, Three Dimensional Geometry, Co-ordinate Geometry, Statistics & Probability, Vector Algebra, Mathematical Reasoning and Trigonometry. Physics Syllabus: Laws of Motion, Kinematics, Work, Energy & Power, Gravitation, Rotational Motion, Physics & Measurement, Properties of Solids & Liquids, Thermodynamics, Electrostatics, Oscillations & Waves, Kinetic Theory of Gases, Magnetic Effects of Current & Magnetism, Electromagnetic Induction & Alternating Currents, Current Electricity, Optics, Electromagnetic Waves, Dual Nature of Matter & Radiation, Electronic Devices, Atoms & Nuclei, Communication Systems, etc. Chemistry Syllabus: Physical Chemistry: Some Basic concepts in Chemistry, States of Matter, Chemical Bonding & Molecular Structure, Atomic Structure, Solutions, Redox Reactions & Electrochemistry, Equilibrium, Chemical Thermodynamics, Chemical Kinetics, Surface Chemistry, etc. Inorganic Chemistry: General Principles & Process of Isolation of Metals, Hydrogen, p – Block Elements, s – Block Element, Co-ordination Compounds, d – and f – Block Elements, Classification of Elements & Periodicity in Properties, Environmental Chemistry, etc. Organic Chemistry: Some Basic Principles of Organic Chemistry, Organic Compounds Containing Halogens, Purification & Characterization of Organic Compounds, Hydrocarbons, Polymers, Organic Compounds Containing Nitrogen, Organic Compounds Containing Oxygen, Bio Molecules, Principles Related to Practical Chemistry, Chemistry in Everyday Life, etc.

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