Chemistry in hindi class 11. 10th chemistry notes 2018-07-13

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chemistry

chemistry in hindi class 11

Give reason for your answer. How do you express the bond strength in terms of bond order? Oct 4, 2017दीपावली पर अलग-अलग किस्म के पटाखे खरीदने एवं उसे जलाने का शौक हम में से अधिकांश लोगों को होता है. As the axial bond pairs suffer more repulsion front the equatorial bond pairs, axial bonds are slightly longer than equatorial bonds. Answer: O 2 2- lower will be the intemuclear distance and thus greater will be the Lattice energy, Question 4. Give equation for the following: i Electrophilic Substitution ii Nucleophilic Substitution Answer: Question 5. The bond that undergoes heterolytic cleavage most readily is a C-C b C-O c C-H d O-H Question 5. आइये इस लेख के माध्यम से अध्ययन करते हैं पदार्थ के कणों के बारे में.


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Hindi

chemistry in hindi class 11

यह पारदर्शी रत्न और कार्बन का शुद्धतम रूप है. Explain with the help of suitable example polar covalent bond. Explain electrophile substitution reaction with the help of example. Identify the functional groups in the following compounds: Answer: Question 9. Out of sigma and Π bonds, which one is stronger and why? Dec 10, 2018क्या आप परमाणु बम के बारे में जानते हैं, परमाणु बम आखिर क्या होता है, इसको पहले किसने बनाया था, किसके नेतृत्व में इसको जापान के दो शहर हिरोशिमा और नागासाकी में गिराया गया था और उसके बाद वहां की क्या स्तिथि थी, इत्यादि. एक परमाणु Atom के द्वारा दूसरे परमाणु पर इलेक्ट्रॉन के स्थानांतरण Transfer of electron के कारण बनने वाले रासायनिक बांड Chemical bond को आयनिक बांड Ionic bond कहते है. Calculate the percentage of phosphorous in the compound.

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Hindi

chemistry in hindi class 11

The sulphur of the substance is oxidised to sulphuric acid which is then precipitated as barium sulphate by adding excess of barium chloride solution. Answer: For testing sulphur sodium extract is acidified with acetic acid because lead acetate is soluble and does not interfere with the test. Plus +ve sign denotes crest, while -ve sign denotes trough. हमारे चारों ओर सब कुछ कणों से ही बना है. Thus, when two hydrogen atoms approach each other, the overall potential energy of the system decreases. Alphabetical order of substituents, d But-3-yn-l-ol. Answer: No, these cannot be taken as canonical forms because the positions of atoms have been changed.

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NCERT Solutions for Class 11 Chemistry in PDF, Notes & Study Material.

chemistry in hindi class 11

उदारण दूध, शेविंग क्रीम इत्यादि. इस लेख में हम चर्चा करेंगे कि हीरा क्यों ठोस होता है और क्यों चमकता है, कौन सा गुण होने के कारण यह चमकदार आदि बनाता है. Write the significance of plus and minus sign in representing the orbitals, Answer: Plus and minus sign is used to indentify the nature of electrons wave. The increasing order of stability can be shown as. Which of the following are electrophiles? Find the percentage of sulphur in the compound.

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NCERT Solutions for Class 11 Chemistry in PDF, Notes & Study Material.

chemistry in hindi class 11

आइये इस लेख के माध्यम से अध्ययन करते है कि कोलाइडल विलयन क्या होते है, इनका कहा उपयोग होता है, टिनडल प्रभाव क्या होता है आदि. आपने ध्यान दिया होगा कि बाकी अन्य धातुओं की तरह सोने में जंग नहीं लगता है. Apr 10, 2018रासायनिक हथियार, मानवनिर्मित रसायन से बनता है और परमाणु हथियार एक विस्फोटक उपकरण है जो कि परमाणु प्रतिक्रियाओं से बनता है. An organic compound contains 69% carbon and 4. In this context, Bodhayan Baanbhatta, Varah Mihir, , Nagarjun, Charak, Gargi, Katyayan etc. Thus, a stable molecule of hydrogen is formed.


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chemistry

chemistry in hindi class 11

Jan 19, 2018जब लोहे से बने सामान नमी वाली हवा में ऑक्सीजन से प्रतिक्रिया करते हैं तो लोहे पर एक भूरे रंग की परत यानी आयरन ऑक्साइड Iron oxide की जम जाती है. As a result A acquires a positive charge and B a negative charge. Answer: Hybridisation: It is the phenomenon of intermixing of atomic orbitals of slightly different energies to form new hybrid orbitals of equivalent energy, Formation of water. Answer: a Structural isomers actually position isomers as well as metamers b geometrical isomers c resonance contributors because they differ in the position of electrons but not atoms Question 16. दूसरी तरफ बहुलकीकरण polymerisation प्रक्रम के फलस्वरूप बने उच्च अणु भार के यौगिक को बहुलक polymer कहते हैं.

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Class 11 Chemistry NCERT TextBooks (Hindi Medium)

chemistry in hindi class 11

Explain the principle of paper chromatography. Nov 13, 2018क्या आपने कभी ध्यान दिया है कि प्लास्टिक की बोतल या कंटेनर के नीचे एक कोड होता है जिसमें विभिन्न संख्या होती है जैसे 1, 2, इत्यादि. Explain the important aspects of resonance with reference to the C0 3 2- ion. These bonds are called axial bonds. Explain this on the basis of dipole moment.

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Hindi

chemistry in hindi class 11

Calculate the percentage composition of nitrogen in the compound. Oct 10, 2018सोना प्राचीन काल से ही भारत में उपयोग किया जाता रहा है. Answer: This is the simplest form of chromatography. Give condensed and bond line structural formulas and identify the functional group s present, if any, for: a 2, 2, 4-Trimethylpentane b 2-Hydroxy-l, 2, 3-propanetricarboxylic acid c Hexanedial. First of all compounds are converted to ionic form by fusing the compound with sodium metal. Answer:The relative stability of various classes of carbonium ions may be explained by the number of no-bond resonance structures that can be written for them. Is it weaker or stronger than the van der Waals forces? या अलग-अलग किस्म के बम एवं अनार से अलग-अलग तरह की रोशनी क्यों निकलती है? This acts as stationary phase.

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ncert books in hindi for class 11 pdf download

chemistry in hindi class 11

Calculate the percentage of chlorine in the compound. Jan 18, 2018आयनिक यौगिकों Ionic compounds को इलेक्ट्रोवैलेंट यौगिकों electrovalent compounds के रूप में भी जाना जाता है. Write bond-line formulas for: Isopropyl alcohol, 2,3-Dimethylbutanal, Heptan-4-one. Pyramids of Egypt are the examples of their progress. Thus, partially positively charged hydrogen atom forms a bond with the other more electronegative atom.


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Class 11 Chemistry NCERT TextBooks (Hindi Medium)

chemistry in hindi class 11

The best and latest technique for isolation, purification and separation of organic compounds is: a Crystallisation b Distillation c Sublimation d Chromatography. Answer: Steam distillation is used to purify the liquids which are steam volatile and not miscible with water! The atom A has lost its share in the electron pair and B has gained this share. The soluble impurities pass into the solution while the insoluble ones left behind. Use Lewis symbols to show electron transfer between the following atoms to form cations and anions a K and S b Ca and O c Al and N. Calculate the masses of carbon dioxide and water produced when 0.

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