Match List - I with List - II.
List - I | List - II | ||
---|---|---|---|
(A) | (I) | Dishwashing powder | |
(B) | (II) | Toothpaste | |
(C) | $${C_{17}}{H_{35}}CO{O^ - }N{a^ + } + N{a_2}C{O_3}$$ + Rosinate | (III) | Laundry soap |
(D) | $$C{H_3}{(C{H_2})_{16}}COO{(C{H_2}C{H_2}O)_n}C{H_2}C{H_2}OH$$ | (IV) | Hair conditioner |
Choose the correct answer from the options given below :
Metal deficiency defect is shown by Fe0.93O. In the crystal, some Fe2+ cations are missing and loss of positive charge is compensated by the presence of Fe3+ ions. The percentage of Fe2+ ions in the Fe0.93O crystals is __________. (Nearest integer)
If the uncertainty in velocity and position of a minute particle in space are, 2.4 $$\times$$ 10$$-$$26 (m s$$-$$1) and 10$$-$$7 (m) respectively. The mass of the particle in g is ____________. (Nearest integer)
(Given : h = 6.626 $$\times$$ 10$$-$$34 Js)
2 g of a non-volatile non-electrolyte solute is dissolved in 200 g of two different solvents A and B whose ebullioscopic constants are in the ratio of 1 : 8. The elevation in boiling points of A and B are in the ratio $${x \over y}$$ (x : y). The value of y is ______________. (Nearest integer)