Recently Active Chemistry Questions

What is the relation between Boyle Temp. (TB) and Inversion Temp. (Ti) of a gas? Express your answer as 10*(TB/Ti) ...

In a tyre of "Ferrari" car of Mr. Obama, a tube having a volume of 12.3 litres is filled with air at a pressure of 4 atm at 300 K. Due to travelling, the temperature of the tube and air inside it raised to 360 K and pressure ...

2.6 g of an element X is reacted with an aqueous solution containing NaOH and NaNO3 to yield Na2XO2 and NH3. NH3 thus liberated is absorbed in 100 mL of 0.11 M H2SO4. The excess acid required 48 mL of 0.25M NaOH for complete ...

What things do we need to keep in mind while selecting the coating metal for galvanisation? ...

Why Cu and ni dont have +3 oxidation state while Sc and Titanium have both.. i.e, +2 and +3? ...

What things do we need to keep in mind while selecting the coating metal for galvanisation? ...

Why at the boiling point..the vapor pressure equals to atmospheric pressure? ...

1. Why are alkynes less reactive towards electrophilic reagents like H+ than alkenes??? 2. How to prepare benzene from lime? 3. What is chloral? 4.When gas A is passed through dry KOH at low temperature, a deep red coloured c ...

Al doesn't react with HNO3. this is true or false. Why???? ...

please help,, dis q was sent to me by a friend. i'm confused here--- *Image* thanks ans- 3>1~2>4 ...

what is the possible potential problems that could have reduced yield in chemical reaction? can you explain few reasons? ...

Following compound A spontaneously changes into http://img846.imageshack.us/i/51646289.png/ ONE OR MORE THAN ONE OPTIONS MAY BE CORRECT. ...

http://img823.imageshack.us/i/32895350.png/ The correct order is: (A) x>y (B) x<y (C) x=y (D) can't predict i think its x<y coz i have read that electron withdrawing substituents in the diene such as CHO , CN , NO2 e ...

how to find the work done in the two processes? plz help *Image* ...

amalgamation is process used for extraction of_____________? ...

q: no of paired e- in [Ni[CN]4]2- shud i mark 8 or 28[including d ones paired pehle se] ...

Welcome to the Great Organic Chemistry Challenge kiddos. Let's see what you got. Give it your best shot. You should know that I don't have the answers to any of these questions. Don't bank on me. Wake out of your slumber and ...

Please show the dehydration products: 1. *Image* ...

Q:=> *Image* The tube contains 10 cm of air column and 4 cm of mercury column each with 4 cm of water column between them as shown above. Now the tube is made vertical. Now find the the length of air column/water column? Q ...

*Image* i have solved this problem and got same answer as given but in intermediate steps my approach was different: i took Pbottom of drop=Ptop of drop+pgh in book they took Ptop=Pbottom of drop+pgh which is correct??? ...

Which of the following resonating structures of 1-methoxy-1,3-butadiene is least stable?? http://img861.imageshack.us/i/14920168.png/ ...

Two doubts: Why does methylation of toluene in the presence of anh. AlCl3 give m-xyelene as opposed to p- or o- product? When 2 Bromo 1 Methyl cyclohexane is treated with CH3ONa in methanol solvent, does the reaction proceed ...

A scarlet compound A is treated with conc. HNO3 to give a chocolate brown ppt. B . the ppt. is filtered and the filtrate is neutralized with NaOH . Addition of KI to the resulting soln. gives a yellow ppt. C . The brown ppt. ...

please help--solubility of amines C6H5NH2, EtNH2, [Et]2NH soure-cbse paper 2011 acc to me, it shud be 1<3<2 not sure though,,please help ...

The number of neutrons emitted when 235]U92 undergoes controlled nuclear fission to 142Xe54 and 90Sr38 is ?? why is the ans given by JEE 4??how can it be 4?? ...

plz help me which of the two is more basic.... (C6H5)2NH , CH3NH2 .....[CBSE 2011] ...

The heat of combustion of acetylene is 312 kcal . If heat of formation of CO2 and H2O are 94.38 and 68.38 kcal respectively , calculate C triple bond C energy . Given that heat of atomization of C and H are 150 and 51.5 kcal ...

with d4 configuration,Cr(2+) acts as reducing agent but Mn3+ acts as oxdisng agent.why? thanks ...

please help asap more acidic-- i]4 nitro benzoic acid,or ii] 3,5 dinitro benzoic acid? i need d reason ans ii>1 thanks ...

For dissociation of PCl5 if relative molar mass is M and total pressure at equilibrium is p at a density d and temperature d,find an expression for degree of dissociation.If vapor density has a value 62 when temperature is 23 ...