Recently Active Chemistry Questions

1) on introducing a catalyst at 500k the rate of 1st order reaction increases by 2 times. the activation energy in the presence of a catalyst is 5 kj/mol. then what will be the Ea in the absence of the catalyst.? a)9.6 kj/mol ...

The critical temp of water is higher than O2 becoz H2O molecule has a)fewer e than O2 b)two covalent bonds c)V shape d) dipole moment ans given is c only...but it should be both c,d naa ? ...

what is Isocyanide andd what is the difference between cyanide and isocyanide!! please reply soon!!:-| ...

What is the structure of an IMIDE??? what prefix and suffixes are used while naming a compound with the group IMIDE??? ...

I have not yet started a single word in INORGANIC!! neither have i bought any books!! so again same question!! WHICH BOOKS TO FOLLOW??? ...

Arrange thse lewis acids in odere of strength FeCl3 ZnCl2 SnCl2 AlCl3 BF3 H+ ...

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OUTLINE ALL STEPS INVLOVED IN SYNTHESIS OF HC *Image* C- CHO FROM ACROLEIN ...

1..why Hcl and HI do not form radicals easily ????????????? ...

why d5 complexes have pale colors in comparision to the other d1.d2, etc complexes? ...

Why f- block elements' colour are constant in their respective compounds, whereas d- block elements' colour in their respective compound varies with their changing oxidation states? ...

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1.plz can anyone tell me how to find plane ,centre of symmetry with examples.......... ...

1...do chirality and optically activity mean the same ??????? ...

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Hydrolysis of 1 mole of peroxodisulfuric acid gives ?? ans given is **2 moles of peroxomonosulfuric acid** but shouldnt it be 2 moles sulfuric acid ???? ...

WHich of these doesnt dissolve in hot dil HNO3 a)HgS b)PbS c)CuS d)CdS ...

If I is intensty of absorbe dlight and C is concentration of AB for photochemical process AB +hv --->AB*,rate of formation fo AB* is directly proportional to ?? a)C b)I c)I^2 d)C.I ALso plz expalin the concept behind it ...

Zinc copper couple cna be used as a reducing agent is obtained by a)mixing zinc dust with copper gauze b)zinc coated with copper c)copper coated with zinc d)zinc and copper wires welded together Plz tell me the concept behind ...

A:B/w SiCl4 and CCl4 ,only SiCl4 reacts with water. R:SiCl4 is ionic and CCl4 is covalent ...

Ammonia on reaction with hypochlorite forms a)NO b)NH4Cl c)N2H4 d)HNO2 concept also plzzz ...

Q1 When alpha particles are sent through thin metal foil,most f them go straight through becoz a)alpha particles are heavier than electrons b)alpha particles are positively charged c)most space of atom is empty d)alpha partic ...

1)excess KCN is added to cupric salt and H2S is passed through the solution. no black CuS is precipitated because Cu is present in the solution as a)[Cu(CN)6]4- B)[Cu(CN)4]3- C)[Cu(CN)4]2- D)NONE. 2)Co3+ forms a complex with ...

15 ml of a gaseous hydrocarbon was required for combustion in 357 ml of air ( 21% of O2 by volume ) . If the gaseous products occupied 327 ml (at NTP) what is the formula of the hydrocarbon )... Ans c3h8 ...

1)gallium forms GaCl2. this is because a)large size of gallium b)very high hydration energy of Ga(III) ion. c)gallium can form both univalent and trivalent ions. d) high electronegativity of chlorine. 2)which is stronger redu ...

*Image* Ques 7) Whcih equilibrium is not rapid at room temperature ? *Image* Ques 8) *Image* Consider the following energy profiles where A reacts with reagent B and gets converted to C, and B reacts with same reagent (R) und ...

of the following complexes those which are conductors in aqueous solutions are? 1)CrCl3.3NH3 2)CrCl3.4NH3 3)CrCl3.5NH3 4)CrCl3.6NH3 this one is multiple correct choice. ...

Ques 1) Among the following, the optically inactive compound is *Image* Ques 2) The binapthol (Bnp) is *Image* (a) an optically active compound having chiral centre (b)an optically inactive compound (c) a meso compound ( d)an ...

*Image* Now, how do we explain this, Lowest Sum or Priority ....? ...