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 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
It indeed is but at low temperature's, the rate of reaction will be slowed due to the restriction in motion of colliding molecules. So, we have to find another way to increase the yield, that will be pressure. Increase the pressure and the yield would be good.It is around 400-450 degree Celsius because the catalyst needs a specific temp to function properly.
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

The block will not move and the magnitude of frictional force will be 5 N (Self adjusting).

We can calculate the maximum static friction force as 0.5 x 40N = 20N.

The applied vertical force is 15N and the net force in the vertical direction is less than 20N (5N in the downward direction), thus the block doesn't move.

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

They have posted the marks on their website but its just the overall marks. And also, the second reply isn't feasible too because BITS have right click disabled at most of the places.

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

It is because Velocity is a vector quantity. +ve and -ve signs are only used to define directions in a single dimension motion. You won't find these notations in 2-d or 3-d motions.

Whereas speed is a scalar quantity.

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

That's fine then!

All the best for counselling. May you get what had wished for :)

 Discussion Forums -> This Post 2 points    (0    in 1 votes )   [?]

That's because you didn't lock the choices. Don't worry, wait till tomorrow morning and then take a printout. Your last saved colleges/branches will be taken into consideration. Hope you did save them :)

SOURCE: one of my friend has this same going right now :), you ain't the only one, be happy :)

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

There is any relation between your board's score and getting a good rank in JEE. It's just a matter of hard work and dedication you put into it.

Like Nitin Jain (2009 JEE topper) got around 96% in 12th boards, but this year's JEE delhi zone topper (AIR-33) got only 78%. So, forget about all this and work hard.

BTW, congrats for your score in boards.

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Krishna and Richi,

Please don't follow what others in the thread are saying. And I would even suggest you guys to check another website or someone really legit. Experts are extinct here and you hardly see nice discussions here.

Goiit is no longer meant for students who are keen to crack IIT. its just a dark place for sociopaths(those who lost the battle of IIT and have literally gone mad) and spammers.

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
Even I've been looking for it since I entered my new school in 11th, done with my school but no relief from this fortiguard. I guess its really strong web filter.
 Discussion Forums -> This Post 2 points    (0    in 1 votes )   [?]
Its a programming language which runs on the concepts of Object Oriented Programming (OOPs), similar to classes in C++.
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

You will observe that the egg placed in pure water will expand whereas the egg in the salt solution will shrink due to Osmosis.

As in osmosis, the solution always flow from a region of low solute conc. to a region of high solute conc.

 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]

I would suggest you Comp. Science if you are interested in computers.

And if you seriously want to do only PCM and study just a day before the exam for that additional subject, go for PE (BEWARE that marks people get in PE in CBSE boards are no where near what people score in comp science or any other subj.) You can score a 100 in rest but scoring it in PE is close to impossible.

This is not to scare you off but I've personally experienced it with my batch as well as my teacher told me the same.

Choose the subject wisely, you'll definitely have to give atleast a day in a week or two to get good marks in these subjects.

 Discussion Forums -> This Post 2 points    (0    in 1 votes )   [?]
This means that its an anionic complex having a negative oxidation state of 1.
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Lets assume the weight of the solution to be 100 g.Then the weight of sulphuric acid will be 98g. The molar mass of sulphuric acid (H2SO4) is 98g.

As Density is given, we get the volume to be, V = 100/1.84 (Using Volume = mass/density relation)

Now simply put these into the formula of molarity and you get

# =18.4 Mol/L

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
Photons do have mass. They do not have rest mass i.e., when at rest which is highly unlikely for a photon as they are continuously in motion.
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

They aren't unevenly tough for Bio students. All you got to learn is basics of logs and thats it.Just stick with logs and do all the lengthy calculations in solutions using logs. That will also help you practice logs as well as master the art of solving solutions fast.

Don't worry, as there are no hi-fi integrations involved here. Just the basic division and multiplication. Just have faith in yourself and rock it :)

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

It doesnt actually require you to go to Kota and study in order to clear exams. You just need to work hard and put in everything in one year. Kota is just a place where you find people willing to study, that's the only difference.

One thing to know here is that make sure you can keep yourself motivated for 1 long year. I know it sounds too easy right now as you'll be on your toes and make you study hard but this won't last long and you may fall in trap again and stop studying or taking interest in studies.

 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]
Just get some standard books for PCM like HC Verma for physics, Arihant series for maths and RC Mukherjee, Arihant Organic Chem book and start studying seriously for atleast 4 hours in a day. In 11th, things get a little too different, don't get tensed and just don't leave the quest for IIT. I did it myself and thought "Hell with IIT, i just want to do well in CBSE" - which is the my biggest blunder, please don't repeat this. Just stick to your goals even if you don't fare well in the beginning as things will go well in the end.
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

I didn't calculate the half life for the initial conc of 2 mol per litre. I simple got the value of K interms of initial conc. R0, then i simply substituted the initial and final values in the general equation of zero order rxn.

As the question clearly says, "When the initial conc is 2 mol per litre, how much time....", so I just put R0 as 2 mol per litre and got the answer. Hope its clear now.

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