In the combustion of 5.00 g of a metal, 9.44 g of metal oxide are formed. Hence, equivalent mass of the metal is

Correct Answer - C `CH_(4)+2O_(2)toCO_(2)+2H_(2)O,=-400KJ//mol` `because` for 2mole or 36 gm water, heat released `=-400KJ//mol` `:.` for gm water, heat released will be `=(-400)/(36)xx40` `-444.44 KJ`

Correct Answer - C Equivalent mass of metal =12 Equivalent mass of oxygen = 8 g `"mol"^(-1)` `therefore` Equivalent mass of metal oxide = 20 g `"mol"^(-1)`

Correct Answer - C `SCl_(2) equiv 2 Cl, 2Cl equiv S` `1" Cl" = S/2= 16` `therefore` Atomic mass of sulphur = 32 `S_(2)Cl_(2) equiv 2S equiv 2Cl` `2" Cl "...

Correct Answer - A `0.20` g oxygen `equiv 3.17` g halogen `therefore` Equivalent mass of halogen `equiv (3.17)/0.20 xx 8 = 126.8` g `~=127` g

Correct Answer - A Equivalent mass lof `Cl = 35.5` g Equivalent mass of copper chloride ` = 99.0 ` g Equivalent of copper combined `=99. 0 - 35. 5 =...

Correct Answer - C `underset(0.1596 g)(A_(2) O_(3) )+ underset(0.006 g)(3 H_(2)) rarr 2 A + 3H_(2) O` `0.006 " g of" H_(2)` reduces ` 0. 1596 ` g of ` A_(2)...

Correct Answer - 3 `alpha = (wedge)/(wedge_(oo))=(10)/(200)=(1)/(20)` `[H^(+)]_("weak acid") = C "alpha"= 0.1 xx(1/20) =5xx10^(-3)` pH=3-log5 = 2.3

Correct Answer - B Equivalents of metal=Equivalents of metal sulphate `("wt.of metal")/("Eq. wt. of metal")("wt. of metal sulphate")/("Eq. wt. metal sulphate")` `(2)/(x)=(6.8)/(x +48)` `6.8x=2x+96` `4.8x=96` `x=(96)/(4.8)=20`

Correct Answer - B Suppose no. of `O^(2-)` ions = n `:.` No .of octahedral voids = n Metal ions (M) occupying octahedral voids `=(2)/(3)n` `:.` Ratio of M : `O^(2-)=(2)/(3)n:n=(2)/(3):1=2:3`...

Correct Answer - B `underset(1.25)underset()(M)" "+ " "O_(2)rarrunderset(1.68)underset()(MO)` `rArr(1.25)/(E)=(1.68)/(E+8)` `rArrE=23.25` `"n-factor"=(69.7)/(23.25)approx3` `therefore " Emprical formula"=M_(2)O_(3)`