Recently Active Chemistry Questions

*Image* Many of you might have seen this.. ...

melting point of a solid will increase its internal kinetic energy..... True/False ...

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WAT IS REVERSE HYPERCONJUGATION EFFECT ? PLEASE EXPLAIN WITH EXAMPLES . ...

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Two carbon discs of 1.0 g each are 1.0 cm apart have equal and opposite charges. If forces of attraction between them is 1.0*10-5 N. calculate the ratio of excess electrons to total atom on the negatively charged disc. (permi ...

*Image* how many moles of NH3 will be liberated if 3 moles of NaNH2 reacts with 1 mole of above compound ?? ...

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Two moles of an ideal gas is expanded from 1 L to 10 L isothermally and reversibly at 300 K. Find enthalpy change for the reaction. ...

Till today i thought that benzyl cation was more stable than tertiary... But today I saw in a Engineering book that actually they both have almost equal stability but given a chioce tertiary is favoured... can anybody confirm ...

Find the Oxidation no. of each S atom is S2O32- ...

which of the following is the weakest acid in H2SO4 ?? a) ClO4- b)NO3- c) HSO4- d) CN-. ...

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

Q if x and y are 2 intensive variables then :- a) xy is an intensive variable b) x/y is an intensive variable c) (x+y) is an intensive variable d) dx/dy is an extensive prorperty ( more than 1 correct) ...

*Image* THe answer is not as obvious as you think ...

In presence of peroxide, hydrogen chloride and hydrogen iodide do not give anti markonikov's addition because: options are as: *Image* ...

hey frends...can sum1 plz explain..wht happnens wen OH ion is added to buffer...how does buffer absorb it..plz explain in details... ...

a given sample of N2O4 in a closed vessel shows 20% dissociation in NO2 at 300K and 1atm,find its heat of dissociation ...

*Image* prepare the above compound starting from acetophenone ...

Which of the following statement is correct when a mixture of NaCl + K2Cr2O7 is gently warmed with Conc. H2SO4? a) A deep red vapour is evolved b) The vapour when passed in to NaOH solution gives a yellow solution of Na2CrO4 ...

There was this question in the book—Effect of pressure on boiling pt. of a liquid. The book gave its reasons and concludes that increase in pressure increases boiling pt. Sir I quite understood their explanation but then I ...

can anebody help me with the draeko rule???? heard that it is quite useful in finding the hybridisation reply awaited ASAP ...

among the following which is the strongest protonic acid?? a)H20 B) BF3 C) [Fe(H20)6]2+ d) [Fe(H20)6]3+ ...

which of the following pairs represents the strongest acid and strongest base that can exist in water? a)H3O+ and OH- b)NH4+ and NH2- c)ClO4- and H2F+ d) NO3- AND CHC- (C- C KE BICH ME TRIPLE BOND HAI) ...

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Q5 In a constant pressure process the volume of ideal gas changes from 1 L to 11 L at pressure of 1 atm. find the work done a) 1 kJ b) -10 kJ c) -1 kJ d) 10 kJ Your Answer: (b) Correct Answer: (c) Score: -1 Explaination : w=- ...

Calcium carbonate reacts with aqueous HCl to give CaCl2 and CO2 according to the reaction, CaCO3(s) + 2 HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l) What mass of CaCO3 is required to react completely with 25 mL of 0.75 M HCl? ...

I HAVE CHEM EXAM 2MORROW.......WT ACC TO U R THE MOST IMP TOPICS FROM SCHOOL POINT OF VIEW(11TH CLASS) I HAVE SOME PROBS IN MOLE CONCEPT(I CANT REMEMBER THE LAWS) AND A LITTLE IN ATOMIC STRUCTURE AND A LITTLE IN EQUILIBRIUM.. ...

find \lambda \;for\'particle\;,which\;moves\;wid\;1\;percent \;speed\;dat\;of\;light ans=[2.43*10^10] ...

1. I3+ 2.I3- ...