A,B and C are three elements forming a compound in which their oxidation state are +2,+5, and -2 respectively. Which could not be the formula of compound?A. `A_(2)(BC)`B. `A_(2)(BC_(4))_(3)`C. `A_(3)(BC_(4))_(2)`D. `ABC_(2)`

A,B and C are three elements forming a compound in which their oxidati

1.	A,B and C are three elements forming a compound in which their oxidation state are +2,+5, and -2 respectively. Which could not be the formula of compound?A. `A_(2)(BC)`B. `A_(2)(BC_(4))_(3)`C. `A_(3)(BC_(4))_(2)`D. `ABC_(2)`
Answer» Correct Answer - a,b,d

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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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A,B and C are three elements forming a compound in which their oxidation state are +2,+5, and -2 respectively. Which could not be the formula of compound?A. `A_(2)(BC)`B. `A_(2)(BC_(4))_(3)`C. `A_(3)(BC_(4))_(2)`D. `ABC_(2)`

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