Recently Active Chemistry Questions

Q1 Ammonia +Hypochlorite anion→ ?? Q2 When zeolite which is hydrated with sodium aluminium islicate is treated with hard water,the sodium ions are exchanged by ? Q3 NH4NO3 +Heat → ? Q4 NH4NO2 +heat→ ? Q5 Glycine +heat â ...

Q1 Which can not reduce acidified soln of MnO4 - a)H2C2O4 b)H2 c)H d)Fe2+ Q2 which oxidising agent is not used for oxidn of mangantae to permanagante a)CO2 b)H2O2 Q3 which of the following cannpt be oxidised by acidified KMnO ...

Does solid BeH2 have linear structure? ...

Q1 St acid among follwing in non polar acetic acid medium is ? a)HF b)H2SO4 c)HClO4 d)HI Q2 Write ionic eqn for NaH +H2O→ ? Q3 Why there is very litle diff in acid strength of H3PO2,H3PO3,H3PO4 ?? Q4 T/F i)carbonates of Na, ...

Structure of S2Cl2 is analogous to SOCl2 CO2 H2S H2O2 ...

This dbt is from what aieee said at http://targetiit.com/iit-jee-forum/posts/ino5-12714.html in post#12 Q Why ionic azides are stable while covalent azides are not ?? ...

Aldehyde/ketone + HX → No reaction. Why? ...

*Image* ...really good question,,,,took me some time to get into it ! ...

Q1Boron readily dissolves in a)conc HCl b)fused NaOH at 673K c)fused Na2CO3 +NaNO3 at 1173K d)mixture of conc. HNO3 and conc. H2SO4 (1:2) Q2 Nitrogen can combine at higher temp directly to give nitrides with a)Mg b)Al c)Zn d) ...

Which is stable towards Hydrolysis? SiCl4 PF3 NCl3 NF3 ...

ncert ques...... Why elements of first transition series possess many properties different from those of heavier transition elements. ...

*Image* Plzz help me in drawing all possible structures of rearranged carbo cations of the given carbo cation . ...

Which has electrovalent covalent coordinate as well as Hydrogen bond? CuSO4.5H2O ZnSO4.7H2O FeSO4.7H2O FeCl3.6H2O ...

AgCl is col-less while AgI is yellow. ... coz.. a) there's d-d transition in AgI but not in AgCl. b) the polarisability of Cl is less , covalent contributiob is less , so it is white. c) col of AgI is coz of transfre of elect ...

Q1 True statements regarding copper sulfate a)it reacts with NaOH and glucose to give Cu2O b)it reacts with KCl to give Cu2O c)it gives CuO on st. heating in air d)it reacts with KI to give brown color *More than one correct* ...

Number of S-S bond in H2SnO6 is? ...

Q1 Which hydride ha no reaction with water a)NH3 b)CH4 c)PH3 d)NaH Q2 which one is highly flammable in nature a)NaBH4 b)LiAlH4 c)B2H6 d)CH4 Q3 which undergoes spontaneous combustion with exposure to air a)PH3 b)P2H4 c)N2H4 d) ...

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Assume that impure copper contains only iron,silver and gold as impurities.after passsage of 140 amp, for 482.5 sec, the mass of the anode decreased by 22.260 grams and the cathode increased its mass by 22.011 grams.Estimate ...

An acidic solution of Cu2+ salt containing 0.4 g of Cu2+ is electrolyzed untill all copper is deposited. The electrolysis is continued seven more times with the colume of the solution kept at 100ml and the current at 1.2 amp. ...

Q1 which hydride doesnt react with water ? Q2a)NH3 b)PH3 c)B2H6 d)AsH3 Q2 what happens t oacidic strength when OH group is strongly attached to SiO2 derivatives ? Q3 Compare basicity :(SiH3)3N and (CH3)3N Q4 general forumula ...

Which d-orbital participates in sp3d hybridisation ?? ...

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1] Salt having least solubility in Water BaCl2 BaNO3 MgSO4 BaSO4 2] Lowest enthalpy of Fusion F2 H2 Cl2 Helium 3] Strongest P-O bond is found in F3PO Cl3PO Br3PO (CH3)3PO 4] Arrange increasing Solubility of Na2SO4 BeSO4 MgSO4 ...

A 4:1 molar mixture of the end CH4 is contained in the vessel at 20 bar pressure. Due to a hole in the vessel the gas mixture leak out. what is the composition of the mixture effising out initially ? ...

20% N2O4 molecules are dissociated in a sample of gas at 27° C and 760mm of Hg. Calculate the density of the equilibrium mixture ? ...

Phenol reacts with acetone in the presence of hydrochloric acid. Predict the product...... Is diphenyl derivative obtained? ...

The OH group of methyl alcohol cannot be replaced by chlorine by the action of (a) Cl 2 (b) H Cl (c)P Cl 3 (d) P Cl 5 ...

Which statement is/are correct about free radical halogenation of alkanes :- 1) The number of product molecules formed by one photon is very high 2) If O2 is added, initially the rate decreases then it increases. 3) Inhibitor ...

1 mole each of Bromo-Derivative (A) and NH3 react to give 1 mole of an organic compound (B). B reacts with Methyl Iodide (CH3I) to give (C). Both B & C react with Nitrous acid to give D & E respy. D is oxidised and subsequent ...