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City: Ludhiana

Firoz

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Chemistry Challenge

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I have been teaching trainees of different calibre and level for the last 7 years in chemistry for engineering and medical (NEET and JEE).

 
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Firoz Ahmad Khan
Posted on 28 Nov, 2015 9:50 PM

At -70 C the NMR of cyclohexane give : 1 signal 2 signals 3 signals 6 signals

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Firoz Ahmad Khan
Posted on 06 Nov, 2014 7:56 PM

Formative Assessment : Download

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Firoz Ahmad Khan
Posted on 06 Nov, 2014 7:56 PM

Formative Assessment : Download

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Firoz Ahmad Khan
Posted on 16 Oct, 2014 1:46 PM

H₂ and He gas always show positive deviation from ideal behaviour due to: a. Inter-molecular space is very large b. Velocity of molecule is very high c. Inter-molecular attraction force is very less d. Rectilinear path of H₂ and He gas molecules

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Firoz Ahmad Khan
Posted on 17 Oct, 2014 8:20 PM

a

Firoz Ahmad Khan
Posted on 14 Oct, 2014 1:21 PM

At an underwater depth of 250 ft; the pressure is 8.38 atm. What should be the mole percent of oxygen in the diving gas for the partial pressure of oxygen in the mixture to be 0.21 atm, the same as it is in air at 1 atm ? (a) 2.5% (b) 3.4% (c) .025% (d) .034%

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