Drinking is injurious of health. But for revenue purpose government has fixed some permissible value for alcohol . The permissible value for the alcohol content in the blood is 1 % mass . On analysis of blood sample of a driver of being drunk over than the pernissible value , it was obtained that 60 gm sample reacted with 30 mL of `8 M K_(2)Cr_(2)O_(7)`(Acidic solution) . Reaction : `2K_(2)Cr_(2)O_(7) + 8 H_(2)SO_(4) + C_(2)H_(5)OH rarr 2Cr_(2) (SO_(4))_(3) + 11 H_(2)O + 2K_(2)SO_(4) + 2CO_(2)` Assume `K_(2)Cr_(2) O_(7)` reacts only with the alcohol present in blood . What is the percentage of alcohol in the blood sample?A. 0.092B. 0.088C. 0.008D. 0.072

Drinking is injurious of health. But for revenue purpose government ha

1.	Drinking is injurious of health. But for revenue purpose government has fixed some permissible value for alcohol . The permissible value for the alcohol content in the blood is 1 % mass . On analysis of blood sample of a driver of being drunk over than the pernissible value , it was obtained that 60 gm sample reacted with 30 mL of `8 M K_(2)Cr_(2)O_(7)`(Acidic solution) . Reaction : `2K_(2)Cr_(2)O_(7) + 8 H_(2)SO_(4) + C_(2)H_(5)OH rarr 2Cr_(2) (SO_(4))_(3) + 11 H_(2)O + 2K_(2)SO_(4) + 2CO_(2)` Assume `K_(2)Cr_(2) O_(7)` reacts only with the alcohol present in blood . What is the percentage of alcohol in the blood sample?A. 0.092B. 0.088C. 0.008D. 0.072
Answer» Correct Answer - a

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`0.80 g` of sample of impure potassium dichromate was dissolved in water and made up to `500 mL` solution. `25 mL` of this solution treated with excess of `KI` in acidic medium and `I_(2)` liberated required `24 mL` of a sodium thiosulphate solution. `30 mL` of this sodium thiosulphate solution required `15 mL` of `N//20` solution of pure potassium dichromate. What was the percentage of `K_(2)Cr_(2)O_(7)` in given sample?A. `73.5%`B. `75.3%`C. `36.75%`D. none of these
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The unbalanced equation for the reaction of `P_(4)S_(3)` with nitrate in aqueous acidic medium is given below : `P_(4)S_(3)+NO_(3)^(-)rarrH_(3)PO_(4)+SO_(4)^(2-)+NO` the number of moles of water reuired per mole of `P_(4)S_(3)` is :A. 18B. `(8)/(3)`C. 8D. 28
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