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1) predict d formula of d compound formed b/w element wid atomic no. 71 & fluorine. 2) y d electronegativity of nitrogen on pauling scale is 3.0 in all d nitrogen compounds? 3) wat is d significance of a + & a - sign shown in ...
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When 500ml of 0.2M KOH reacts with 500ml of 0.02M HCl, rise in temp. is T1. When 250ml 0.2M KOH reacts with 250ml 0.2M HCl, the temp. increase is T2. The temperature T1 and T2 are related as: (a) T1=T2 (b) T1=2T2 (c) T1=4T2 ( ...
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Q2 total symmetry(plane of symmetry + axis of symmetry) present in benzene molecules is? a) 3 b) 4 c) 6 d) none ...
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with the boards appearing i would like to share some of the mistakes in the textbook so that we may not learn our concepts wrong and could focus on the textbook as it is an essential part of JEE IF U ALSO HAVE PROBLEM PLEASE ...
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Metal X is singing a song for non metal Y I ate less protons than what u ate, Our atomic number add upto twenty eight, WIth AgNO3, our salt forms a precipitate. Non metal sings back: Beware this precipitate is black not white ...
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These are few questions asked by external examiner in our school in chem viva: 1. Chem formula of Sindoor. 2. Compound used for cleaning earrings.. 3. sag(spinach) me haldi (turmeric) kyun nahi dalte.. :D [3] me have chem pra ...
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wat is meant by ambient temperature conditions? wat is calld a surfactant? ...
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can any1 gimme some easy ways or some logic to remember the orders f thermal stability f carbonates? ...
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1)compare d solubility of the foll compounds of d alkali metals wid those of d alkaline earth metals : a) nitrates b) carbonates c) sulphates d) hydroxides 2) starting wid NaCl , how would you proceed to prepare sodium peroxi ...
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CAN NE1 TELL ME FRM WER CAN I GET CHEMISTRY FORMULA LIST OR SUMTHIN OF THAT SORT???? ...
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Write the stricture of monomer used for getting polymer PMMA ...
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how does an indicator correctly indicate the endpoint of a rxn , wen it can change colour over a range of ph eg range of phenolphtalein is 8 -10 but its used to indicate specific endpts like 8.5 ...
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FIND MAX POSSIBLE ELECTRONS SATISFYING THE EQ IN QUANTUM NO n+L =m+4s+1 n,L,m,s having their usual meaning ...
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how many electrons in Zn(atomic number 30) satisfy the given equation n+L =2m+3s+1 ...
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Arrange according to dipole moment... CHCl3, CH2Cl2, CH3Cl ...
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What is levelling effect of water??? ...
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What is levelling effect of water??? ...
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Q3 A reversible adiabatic expansion is an Your Answer: isoentropic process Correct Answer: isochoric process Score: -1 Explaination : no need this is the question in olympiad section which is there in test column sir i think ...
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Why does C-N length increase in CN+ as compared to CN- ? ...
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Why does XeF6 form capped octahedron and not polygonal pyramidal? ...
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*Image* *Image* reference:http://www.science.uwaterloo.ca/~cchieh/cact/c120/bondel.html ...