Popular Chemistry Questions

1....is BeF2 IONIC OR COVALENT??????? ...

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i have dbt regarding structures. *Image* ...

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1.Gas that strikes in thundering of light is: (a) CO (b) NO (c) CO2 (d) H2 ...

I am giving JEE 2010. I do not where to start the organic chemistry from. I do not know anything in organic. PLs help me and tell me how should i start and go about studying it ...

Paragraph (Questions may have multiple answers) Nitration reaction is classified under electrophilic substitution where the electrophile is NO2+. The reagent used in this reaction is conc. HNO3 + conc. H2SO4. Q1. What is the ...

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Can Charles law be stated with initial volume at 100 degree C? give reason! If no why?If yes , with what modification(s)? ...

what is the relative strength of the following acids: HClO4, HNO3, H2SO4, HCl ...

true or false................ 1.reaction of benzene with cyclopropane and AlCl3 gives n- propyl benzene. 2.reaction of benzene wit cyclopropane and AlCl3 in cold gives n- propyl benzene. 3.reaction of benzene with propionylch ...

Bromine can be liberated from KBr solution by the action of : KI NaCl Cl2 I2 solution An ester used as medicine is : ethyl acetate methyl salicylate ethyl benzoate methyl benzoate ...

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how to draw a chemical structure for example H2S2O5,CrO5 ...

Reimer-Tiemann reaction of phenol with CCl4 in NaOH at 340K gives salicylic acid as major product-----1 The reaction occurs througjh formation of dichloro carbene.. 2 I marked it as B but answer given: The reason is nucleophi ...

1) every atom or ion that forms an fcc unit cell is surrounded by x octahedral holes and y tetrahedral holes.?where x and y are.............. 2)consider the structure of CsCl(8,8 coorsination).How many Cs+ ions occupy the sec ...

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how to find the n factor for the salts which react such that no atom undergoes change in oxidation state ...

for a process in equilibrium ΔG=0 ΔG=ΔH - TΔS THEREFORE ΔH=TΔS ALSO FOR A REVERSIBLE PROCESS IN EQUILIBRIUM ΔS=0 WHICH IMPLIES THAT ΔH=0 FOR ALL PROCESSES IN EUQILIBRIUM???? SOMEBODY PLEASE EXPLAIN ...

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1.in aqueous soln.,Cu2+ ions react with CN- ions to give CuCN &(A).(A) in alkaline soln. undergoes disproportionatio to give (B)$(C).find (A) ,(B),(C).respectively a.(CN)2,CN-,OCN- b.C4N2,CN2-,CN- c.Cu2O,CuO,Cu d.CuOH,CuO,Cu. ...

a ball of mass 100 g is moving with 100 ms-1. 1 mark JEE 2004 :P ...

i need help in organic and inorganic can you please post the chapters in decreasing order of importance (or say the most important chapters in both please) please reply fast ! ...

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does delta G(not) change with temp...thou it is defined at 298K only .Q.. 2 A(g) + B(g) (equlibrium) 3S(s) + T(g) delta H(not) = -145 At 298K forward rxn is spontaneous, wt change if ny wud occur in deltaG(not) value as temp. ...

wat is exchange energy & with ex. ...

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In compound : COOH(Y) (X)H3N *Image* NH3(Z) the correct acidic order????????????? ...

PERIODIC TABLE:-Name the group having metal,nonmetal,liquid as well as gas at room temperature ...