Priyapatel

साफिया के भाई ने नमक की पुड़िया भारत ले जाने से इसलिए मना कर दिया क्योंकि यह गैरकानूनी था। पाकिस्तान से लाहौरी नमक भारत ले जाना प्रतिबंधित था। उसके अनुसार नमक की पुड़िया निकल आने पर बाकी सामान की भी चिंदी-चिंदी बिखेर दी जाएगी। नमक की पुड़िया तो जा नहीं पाएगी, ऊपर से उनकी बदनामी मुफ्त में हो जाएगी।

(i) The addition of water: Acetylene reacts with water in the presence of dilute sulphuric acid and mercuric sulphate to form an unstable product which undergoes rearrangement to give acetaldehyde.(ii) The addition of hydrogen cyanide: Acetylene reacts with hydrogen cyanide in the presence of barium cyanide to form vinyl cyanide.

NVA at FC = 800 + 20 - 50 - 500 + 40 - 30 = र 280 crores. (Exports are a part of sale.)

औदयोगिक क्रांति के वरदान :-
मशीनों द्वारा उत्पादन से संसार की बढ़ी हुई जनसँख्या का बढ़ी हुई आवश्यकताओं की पूर्ति संभव हुई ।
मशीनों से मानवता की प्रारंभिक आवश्यकताओं भोजन, कपड़ा और मकान की पूर्ति संभव हुई ।
मशीनों ने मुनष्य को दु:खदायी थकान और आनंदहीन कार्यों से मुक्ति दिलाई ।
मशीनों से मनुष्यों को अधिक सुख मिला ।

Galesburg Illinois is still a wonderful town with big old frame houses, huge lawns and tremendous trees. In 1894, it reflected a world of romance, leisure, freeness and repose. Summer evenings were twice as long. The people sat out on their lawns. The men smoked cigars and talked quickly. The women sat in leisure waving palm-leaf fans. Charley wanted to go back there to escape from insecurity, fear, war, worry and tension of the modern world.

व्यष्टि अर्थशास्त्र
समष्&

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Distance between the two parallel tangent to a circle= diameter= 2 x r= 2 x 4 = 8 cm.

Work function indicates the minimum energy required for the electron in the highest level of the conduction band to get out of the metal. Not all electrons in the metal belong to this level but, rather they occupy a continuous band of levels. Consequently, for the same incident radiation, electrons knocked off from different levels come out with different energies.

Electrophilic addition reaction takes place via more stable carbocation.

The intensity EA at D due to charge at A is given byIf E be the magnitude of the resultant intensity, then

The chemical equation representing the combustion of acetylene is(i) To calculate the volume of O2 at STP required to effect complete combustion of 200 cm3 of acetylene:According to Gay Lussac’s law of gaseous volumes,2 volumes C2H2 will require O2 for complete combustion = 5 vol         200 cm3 C2H2 will require O2 for complete combustion =                                                                        = 500 cm3 at STPThus volume of O2 required = 500 cm3 at S.T.P.(ii) To calculate the volume of CO2 produced at S.T.PAccording to Gay Lussac’s law of gaseous volumes.2 volumes of C2H2 pr

1000 mL of HCl contains 0·75 mol                                 = 0.75 x 36.5                                 = 27.375 g   25 mL of HCl contains                                         = 0.684 gThe reaction isCaCO3(s)    +   2HCl(aq)    CaCl2(aq) + CO2(g) + H2O(l)1 mol                 2 mol40+12+48          2 x 36.5 = 100 g              = 73 g?                        0.684 g    Now 73 g of HCl are required to react with 100g of CaCO3     0.684 g of HCl are required to react with

Physical significance: Entropy has been regarded as a measure of disorder or randomness of a system. Thus when a system goes from a more orderly to less orderly state, there is an increase in its randomness and hence entropy of the system increases. Conversely, if the change is one in which there is an increase in orderliness, there is a decrease in entropy. For example, when a solid changes to a liquid, an increase in entropy takes place, because with the breaking of the orderly arrangement of the molecules in the crystal to the less orderly liquid state, the randomness increases. The proces

For FCC lattice (assuming cation in octahedral void and anion in FCC)a = 508 pm (r+ + r-) = a/2 = 508/2 = 254 pm(r+ + r-) = 254 pmr- = 254-110 = 144 pm

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ભારતનાં જંગલોના પાંચ પ્રકાર છે . 1. ઉષ્ણ કટિબંધિય વરાસાદી જંગલો. 2. ઉષ્ણ કટિબંધિય ખરાઉ જંગલો, 3. ઉષ્ણ કટિબંધિય કાંટાળા જંગલો, 4. સમશીતોષ્ણ કટિબંધિય જંગલો, 5. ભરતીના જંગલો. 1. ઉષ્ણ કતિબંધીય વરસાદી જંગલો : વિતરણ : ભારતમાં આ જંગલો ગરમ અને ભેજવાળી આબોહવા, વાર્ષિક 200 સેમી કરતા વધુ વરસાદ અને 22 સે કરતાં વધ તાપમાનવાળા પ્રદેશોમાં આવેલાં છે. ભારતમાં તે પશ્ચિમઘાટના વધુ વરસાદવાળા વિસ્તારો, લક્ષદ્વિપ અને અંદમાન-નિકોબાર ટાપુઓ, અસમની ઉપરનાં વિસ્તારોમાં અને તમિલનાડુના તટીય પ્રદેશોમાં જોવા મળે છે. વૃક્ષો : મૅહોગની, અબનૂસ, રોઝવુડ, રબર વગેરે અહીંના મુખ્ય વૃક્ષો છે. વિશેષતાઓ : અહીંના વૃક્ષોની ઊંચાઈ 60 મીટર કરત

Heterogeneous mixtures can be separated into their respective constituents by simple physical methods like handpicking, sieving, filtration.Sometimes special techniques have to be used for the separation of the components of a mixture.

Order
Molecularity
The overall order of reaction is the sum of all the exponents of all the reactants present in the rate law expression.
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The preparation of potassium dichromate from chromite involves the following main steps:(i) The chromate ore is finely ground and heated strongly with molten al
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(Get CBSE, ICSE and all State Boards textbook solutions for all subjects Class 8 to 12. You can also get CBSE solved papers of previous year from here! You can also prepare for SSC. Can also test SSC, find SSC Resource centre ! You can get resources online for free for NEET, NEET previous year solved paper and JEE, JEE Previous year solved papers! Student can also find the, previous y