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    • Posted by Abhishek Rana 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Nitika Neb 7 years ago

    Wrought iron is an iron alloy with a very low carbon content in contrast to cast iron. It is a semi-fused mass of iron with fibrous slag inclusions, which gives it a "grain" resembling wood that is visible when it is etched or bent to the point of failure.

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    • Posted by Vidya Sree 5 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Kt Kt 7 years ago

    The residual charge left on an atom after removel of all electrons in it

    0Thank You

    Adithyan Karthik 7 years ago

    Please refer +1, 2nd text

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    • Posted by Vikas Patel 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Nitika Neb 7 years ago

    Polyethylene terephthalate (sometimes written poly(ethylene terephthalate)), commonly abbreviated PET, PETE, or the obsolete PETP or PET-P, is the most common thermoplastic polymer resin of the polyester family and is used in fibres for clothing, containers for liquids and foods, thermoforming for manufacturing, and in combination with glass fibre for engineering resins.

    1Thank You

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    • Posted by Abhay Singh 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Akash Yadav 7 years ago

    Raoult’s law is applicable to solutions containing non-volatile solute only.Raoult’s law is not applicable to solutes which dissociate or associate in the particular solution.

    4Thank You

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    • Posted by Mayank Mittal 7 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Adithyan Karthik 7 years ago

    2-3% of iodine in alcohol and water medium

    4Thank You

    Nitika Neb 7 years ago

    Tincture of iodine, iodine tincture, or weak iodine solution is an antiseptic. It is usually 2–7% elemental iodine, along with potassium iodide or sodium iodide, dissolved in a mixture of ethanol and water. Tincture solutions are characterized by the presence of alcohol

    2Thank You

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    • Posted by Vishal Kumar 7 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Himanshu Gupta 5 years, 8 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Mansi Sharma 7 years ago

    See the blue print dude!

    3Thank You

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    • Posted by Rasnit Shankar 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Shorya Chaudhary 7 years ago

    By addding phynl in it

    6Thank You

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    • Posted by Amisha Vashisth 7 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Pratap Aditya Majee 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Mansi Sharma 7 years ago

    U should write a complete que`

    1Thank You

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    • Posted by Passngkit Lepcha 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 7 years ago

    The conversion of propanal to propane is a reduction reaction. This involves the reduction of an aldehyde into a hydrocarbon. There are two methods namely:

    1. Clemmesen reduction:The carbonyl group of aldehyde or ketone is converted into CH2 group by treating with Zinc-Amalgam(Zn-Hg) and concentrated hydrochloric acid.

    2. Wolf-Kishner reduction:The carbonyl group is converted by the action of hydrazine(NH2-NH2) with KOH or NaOH in high boiling solvent such as ethylene glycol.

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    • Posted by Ritesh Pal 7 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Resham Bawa 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Mansi Sharma 7 years ago

    Because of the d-d transition .

    6Thank You

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    • Posted by Gulrez Aslam 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Aryan Singh 7 years ago

    Because in carboxalate ion the charge donot enter the benzene ring forming two resonating structures. But in phenoxide ion the charge enters the ring and forms six resonating structures.

    3Thank You

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    • Posted by Aastha Choudhary 7 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Vineet Kumar Gupta 7 years ago

    It's in the syllabus of jee advance I guess (not in boards)

    0Thank You

    Yogita Ingle 7 years ago

    The molten mass is then cooled. Then it slowly gives dissolved the SO2 gas in the form of bubbles. So, the copper thus formed is also known as blister copper.
    The solidied copper obtained has blistered appearance due to the evolution of SO2, so it is called blistered copper.

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    • Posted by Harshad Patel 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Rajat Dhull 7 years ago

    State in which there are strongly packed atoms and molecules. High intermolecular forces and less intermolecular space.

    1Thank You

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    • Posted by Vinay Kumar Nishad 7 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Vineet Kumar Gupta 7 years ago

    Faber centres or Faber (colour) centres that's what was missing in the previous answer

    0Thank You

    Jugraj Grewal 7 years ago

    The electrons trapped in anion vacancies are referred as F-centres.

    0Thank You

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    • Posted by Ayush Raj 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Aryan Singh 7 years ago

    Ribonucleic Acid.

    0Thank You

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    • Posted by Prakhar Vyas 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 7 years ago

    The charge on the colloidal particles is due to adsorption of common ions of the electrolyte on the surface of the colloidal particles.
    eg:   Fe3+ from FeCl3 on the surface of Fe(OH)3  particle.

    3Thank You

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    • Posted by Jit G?P✔ ??? 7 years ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Garima Bansal 7 years ago

    I think heparin is ryt ?

    0Thank You

    Ananya Pal 7 years ago

    It's a aspirin not heparin

    0Thank You

    Yogita Ingle 7 years ago

    Blood does not coagulate inside the body due to the presence of heparin inside the body.It is anticoagulant and has highest negative charge density.Heparin is a naturally occurring anticoagulant produced by basophils and mast cells.Heparin acts as an anticoagulant, preventing the formation of clots and extension of existing clots within the blood. While heparin does not break down clots that have already formed , it allows the body's natural clotlysis mechanisms to work normally to break down clots that have formed

    2Thank You

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    • Posted by Rafiya Ansari 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Nitika Neb 7 years ago

    Gold no is defined as the minimum wt of protective colloid in milli grams that must be added to 10 ml of red gold sol so as no coagulation can take place when 1ml of 10% Nacl is added to it quickly

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    • Posted by Snita Dutta 7 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    O Singh 7 years ago

    Due to large number of unpaired electrons.

    0Thank You

    Yogita Ingle 7 years ago

    Transition metals have high enthalpy of atomization Enthalpy of atomisation is the amount of heat required to break the metal lattice to get free atoms. As transition metals contain a large number of unpaired electrons, they have strong interatomic attractions (metallic bonds). Hence,they have high enthalpies of atomisation.

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    • Posted by Shorya Chaudhary 7 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Garima Bansal 7 years ago

    Delta formed becoz see water contain electrolytes in it wheras river water contain colloidal particles in the form of soil clay etc. When they meet coagulation occurs and delta formed.

    1Thank You

    Gaurav Seth 7 years ago

    When a single river drains into a big sea or ocean, travelling via other parts of the country it gets spreaded throughout itself and forms, Delta.

    1Thank You

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    • Posted by Shorya Chaudhary 7 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Gaurav Seth 7 years ago

    The colloidal particles carry a particular charge and the dispersion medium carries equal but opposite charge. The stability of the colloid is due to these charges only. Due to the presence of these similar and equal charges, the particles of the colloid sol  repel one another and cannot combine together to form larger particles which keeps them dispersed in the medium and the colloidal remains stable. For example, in a ferric hydroxide sol, the colloidal ferric hydroxide particles are positively charged, while the dispersion medium carries an equal and opposite negative charge

    1Thank You

    Prakash Jaiswal 7 years ago

    Me too wana know this questions answer

    1Thank You

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    • Posted by Nidhi Priya 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 7 years ago

    Conformational isomers, or conformers for short, are caused by the rotation around covalent single σ bonds and the three-dimensional (3-D) tetrahedral shape of the sp3-hybridized centers.

    1. Eclipse conformation: Conformation in which hydrogen atoms attached to two carbons areas nearest to each other as possible is known as eclipsed

    2. Staggered conformation: Conformation in which hydrogen atoms attached to two carbons are as far as possible with respect to each other is known as staggered The staggered conformation is thus relatively more stable in comparison to eclipse conformation as there are minimum repulsive forces, minimum energy due to much separation between the electron clouds of C-H bonds.

    1Thank You

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    • Posted by Mantosh Rai 7 years ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Mansi Sharma 7 years ago

    This is not sure ...

    0Thank You

    Rajat Dhull 7 years ago

    P block has the highest weightage

    1Thank You

    Nidhi Priya 7 years ago

    Search on google cbse class 12 weitage of chapters

    0Thank You

    ANSWER

    • Posted by Nitish Sharma 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Rishabh Sahu 7 years ago

    All the reactions with specific names are important. For being more specific ,see the previous years papers.

    2Thank You

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    • Posted by Vornica Singh 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Akash Yadav 7 years ago

    After drawing the structure of H3PO2 u can see that there is only one -OH attached to Phosphorus which is responsible for basicity of H3PO2

    5Thank You

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    • Posted by Dhirendra Patil 7 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Vornica Singh 7 years ago

    Treatment of phenol with choloform in the presence of aqueous alkali at 340k followed by hydrolysis of resulting product gives o-hydroxybenzaldehyde (salicylaldehyde) as a major product.

    1Thank You

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    • Posted by Nikki Singh 7 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

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