IIT JEE , AIEEE Forum - Chemistry , Physical Chemistry

ritumodi

1)a gas pressure was recorded as 29.4 lb per meter square .its value in atmosphere will

be?

(a)29.4/100atm (b)29.4/760atm (c)29.4/76atm (d)2atm

2)a vessel containing gas at a pressure of 60cm of Hg was connected to arm A of open

end manometer..the atmospheric pressure was recorded as 74cm of Hg .if mercury in arm

A stands at 84.5cm height ,the mercury in arm B will stand at?

(a)70.5cm (b) 74cm (c)24.5cm (d)88cm

3)the molar volume of carbon dioxide is maximum at

(a)STP (b)127 degree Celsius and 1 atm pressure (c)0 degree Celsius and 2 atm pressure

(d)227 degree Celsius and 2 atm pressure

4)the density of neon is highest at

(a)STP (b)0 degree Celsius,2 atm (c)273 degree Celsius,1 atm (d)273 degree celsius,2 atm

5)X ml of hydrogen gas effuses through the hole in a container in 5 seconds .the time taken for the effusion of same volume of gas specified below under identical conditions is

(a)10sec,He (b)20sec,oxygen (c)25sec,CO (d)55sec,carbon dioxide

ritumodi

answer all questions with full explanation

Moderator

Dear Ritumodi,

You can answer onlu one ques. at a time.(For more info see How many questions can I ask in one topic to the expert ?). Please let us know which query u want to be answered first and post rest of the questions as separate query.

Thanks

~ forum moderator

ritumodi

ok answer me any two

Admin

Dear ritumodi,

one question per thread is the rule. :) we'll request an expert to answer the first one.

cheers

~admin

kavincoolzz

well for 3 it is b,4 is c,5 is b.
the first 2 answers use ideal gas equation and the last one uses
M/m=T^2/t^2

Ask & Discuss Questions with Community & Experts