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    • Posted by Amita Bairagi 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Dipti Santani 6 years, 10 months ago

    Galvanic cell is an electrochemical cell that converts the chemical energy to a spontaneous redox reaction into electrical energy

    0Thank You

    ANSWER

    • Posted by Monojso Timung 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Atul Sharma 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Mohit Sepat 6 years, 10 months ago

    From.100 not from 70

    1Thank You

    Mohit Sepat 6 years, 10 months ago

    Upto 80 may be

    1Thank You

    ANSWER

    • Posted by Anshul Gambhir 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Ujjwal Gaba 6 years, 10 months ago

    Methoxybutane

    2Thank You

    ANSWER

    • Posted by Tausif Alam 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Sayeda Iram Ateeq 6 years, 10 months ago

    1. Toluene + CrO2Cl2+Cs2------> Benzaldehyde ( Etard reaction ) 2. Acetone + LiAlH4----> CH3-CH(OH)-CH3 + conc.H2SO4 -----> CH3-CH--CH2(Propene) 3.CH3CHO(Ethanal) + dil.NaOH -----> CH3-CH(OH)-CH2-CHO (Aldol condensation)

    0Thank You

    Ujjwal Gaba 6 years, 10 months ago

    1.Toluene +KMnO4 ------>Benzaldehyde 2.Acetone +H2 ------> propan-2-ol +(alcolic) KOH ------> propene 3. Ethanal +Ethanal (presence of dil NaOH) ------>3-hydroxybutanal. {Aldol condensation}

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    • Posted by Om Prakash 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Mohit Sepat 6 years, 10 months ago

    Sc n Zn

    0Thank You

    Sakshi Shukla 6 years, 10 months ago

    Zn It has completely filled electrons in outer most shell

    0Thank You

    Ashok Mishra 6 years, 10 months ago

    Zn

    0Thank You

    ANSWER

    • Posted by Krishna Kumar 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Shivendra Nath Tripathi 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Vishal Bharti 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 6 years, 10 months ago

    1) Chlorobenzene and Benzyl chloride Take both the compounds in a test tube. Add 1 - 2 ml of aqueous KOH to each of the test tubes. Acidify with dilute HNO3 and add AgNO3. Benzyl chloride gives white precipitate while chlorobenzene does not.
    2) Chloroform and Carbon tetrachloride Chloroform on warming with alcoholic KOH and aniline will give foul smell of isocyanide; whereas, Carbon tetrachloride will not show any change.

    1Thank You

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    • Posted by Ŕohi Paul 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Mahaalakshmi Vijayamoorthy 6 years, 10 months ago

    Order: zero order rxn Molecularity: 2 Unit of K: mol lit^-1 sec^-1

    1Thank You

    ANSWER

    • Posted by Prashant Dhakad 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Shivendra Chauhan 6 years, 10 months ago

    It is a protein which is present in milk

    1Thank You

    ANSWER

    • Posted by Kartik Periwal 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Shivendra Chauhan 6 years, 10 months ago

    Extraction of metal from its oxide by heating in the presence of carbon/coke

    1Thank You

    ANSWER

    • Posted by Meer Samad Khan 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Neha ?? 6 years, 10 months ago

    [Co Cl2 (en)2 ]` Valency of cobalt which is 3 is written in romman no.

    1Thank You

    ANSWER

    • Posted by Yanshika Agrawal 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Mannu Yadav 6 years, 10 months ago

    Because ns and (n–1)d electrons have less energy gap

    2Thank You

    Navya Singh 6 years, 10 months ago

    Dur to presence of comparable energies of ns and (n-1)d orbitals

    1Thank You

    Gangeshver Sharma 6 years, 10 months ago

    Due to presence of vacant d-orbital

    0Thank You

    ANSWER

    • Posted by Gaurav Shakya 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Mohit Sepat 6 years, 10 months ago

    No is u is sleeping

    2Thank You

    Deepak Jindal 6 years, 10 months ago

    Not remove

    2Thank You

    Rajnish Sapehia 6 years, 10 months ago

    No

    1Thank You

    ANSWER

    • Posted by Sahil Saini 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Mohit Sepat 6 years, 10 months ago

    Due to angle strain

    0Thank You

    Chitra Rawat 6 years, 10 months ago

    Presence of angular strain...bcoz of which it is unstable

    1Thank You

    Gangeshver Sharma 6 years, 10 months ago

    Due to their structure

    1Thank You

    ANSWER

    • Posted by Happy Singh 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Rishu Kumar 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Kartik Periwal 6 years, 10 months ago

    Haematite, magnetite

    1Thank You

    ANSWER

    • Posted by Sunita Rastogi 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Mohit Sepat 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Rishu Kumar 6 years, 10 months ago

    Benzene diazonium chloride

    1Thank You

    ANSWER

    • Posted by Komal Mehta 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Navya Singh 6 years, 10 months ago

    Mudasar ali . (Keep educating yourself ) .they are totally according to ncert and 12 syllabus

    0Thank You

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    • Posted by Ghulam Hassan 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Nitesh Kumar 6 years, 10 months ago

    The detergents which can be decomposed by the microorganisms are called biodegradable detergent The detergents which which cannot be decomposed by the microorganisms are called Non Biodegradable detergents

    1Thank You

    ANSWER

    • Posted by Ravi Sharma 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Nitesh Kumar 6 years, 10 months ago

    Because lyophilized sol do not contain any charge

    1Thank You

    ANSWER

    • Posted by Md Faizan Khan 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Silent Punk 6 years, 10 months ago

    Use Dettol Antiseptic Disinfectant Liquid to kill germs on the skin, help protect against infection from cuts, scratches and insect bites and it can also be used as a household disinfectant on surfaces or in laundry. Always use as directed. Lavatories, sinks, drains, etc.. - Use undiluted Dettol Laundry: Add to laundry to kill germs First Aid: Antiseptic wound cleaning for cuts, grazes, bites and stings Personal hygiene: Add to bathing water to kill germs. Can be used to treat pimples and dandruff

    1Thank You

    ANSWER

    • Posted by Rajam 1969 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Yogita Ingle 6 years, 10 months ago

    Most drugs when taken in doses higher than recommended may cause harmful effects and sometimes, may even lead to death. Hence, a doctor should always be consulted before taking any medicine.Sleep is a normal physiological phenomenon in man. Sleeplessness(inisomnia) may result form variety of causes & which under certain condition need treatment.Hypnotics & sedatives are the drugs used to produce  drowsiness & promote sleep.These drugs depress the central nervous system. If these drugs areused in  higher doses  will cause serious side effects ,which may lead to death in certain cases. So whenever sleeping pills are to be taken they should be taken  after consultation with doctor about the dose concentration & dose timing.

    1Thank You

    ANSWER

    • Posted by Kartik Rana 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Nitesh Kumar 6 years, 10 months ago

    When two miscible liquids mix with each other to give a constant boiling mixture are called azeotropes

    1Thank You

    Yogita Ingle 6 years, 10 months ago

    • Azeotropes are binary mixturespossessing the same synthesis in fluid, vapor stage and boiling stage at a steady temperature.
    • The components of azeotropic mixtures are separated by fractional distillation.

    2Thank You

    ANSWER

    • Posted by Ali Khan 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Mohit Sepat 6 years, 10 months ago

    Wht

    1Thank You

    ANSWER

    • Posted by Nitin Sahu 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Gaurav Seth 6 years, 10 months ago

    Any carbohydrate which is capable of being oxidized and causes the reduction of other substances without having to be hydrolysed first is known as reducing sugar, but those which are unable to be oxidised and do not reduce other substances are known as non-reducing sugars. Generally, all the free monosaccharides having free aldehyde or hydroxyl ketonic group are capable of being oxidised. After being oxidised they cause the reduction of the other substances and so known as reducing sugars.

    Reducing Sugars:

    Such sugar bear a free aldehyde (-CHO) or ketonic (-CO) group.

    Reducing sugars have the capacity to reduce cupric ions of Benedict’s or Fehling solution to cuprous ions.

    Examples: Maltose, Lactose, Melibiose, Cellobiose, Gentiobiose

    2Thank You

    ANSWER

    • Posted by Upendra Gurjar 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Gaurav Seth 6 years, 10 months ago

    The bond pair in NH3 is close to N in N–H bond than the bond pair in P–H bond in PH3. This is because the size of the nitrogen is small than phosphorus. As a result, the force of repulsion between the bonded pair of electrons in PH3 is more than in NH3. Therefore, the bond angle in PH3 molecule is lesser than that in NH3molecule.

    1Thank You

    ANSWER

    • Posted by Mayank Rastogi 6 years, 10 months ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Mahak Garg 6 years, 10 months ago

    The inter electronic repulsion between two lone pairs of oxygen atom tends to bring C-O bond closer which leads to decrease in bond angle of alcohols. It is same as in the case of H-O-H angle.

    1Thank You

    ANSWER

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