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Why is helium used in diving apparatus?...

Why is helium used in diving apparatus?

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Assertion (A): Helium used in diving apparatus. Reason (R): Helium is very less soluble in blood.

Account for the following : (i) Helium is used in diving apparatus. (ii) Fluorine does not exhibit positive oxidation state.

(a) Account for the following : (i) Helium is used in diving apparatus. (ii) Fluorine does not exhibit positive oxidation state. (iii) Oxygen shows catenation behaviour less than sulphur. (b) Draw the structures of the following molecules. (i) XeF_2 (ii) H_2S_2O_8

(a) Complete the following equations : PCl_(5)overset("heat")rarr (ii) C+"Conc."H_(2)SO_(4)rarr (b) Explain giving reason in each case : (i) Halogens are strong oxidising agents. (ii) Fluorine form only one oxoacid, HOF. (iii) Helium is used in diving apparatus.

Why is helium used in inflating aeroplane tyres?

(A) Helium is used in modem diving apparatus (R) Helium is chemically inert

Noble gases used in diving apparatus and discharge tube is respectively (main use)