Question

The following observations were noted while performing an experiment. Find the relative density of the salt solution with the help of the observation noted.
(I) Weight of the stone in the air = 272
(II) Weight of the stone in the water = 192 g
(III) Weight of the stone in the salt solution = 176 g

• A. (272 – 192)g/(272 – 176)
• B. (272 – 192)g/(192– 176)
• C. (272 – 192)g/(272 – 192)
• D. (272 – 176)g/(272 – 192)

Answer 1

The correct option is

A

(272 – 192)g/(272 – 176)

Observations: Weight of the stone in the air, $W_1=272g$
Weight of the stone in the water, $W_2=192g$
Weight of the stone in the salt solution, $W_3=176g$
$\text{Relative Density of the stone in the salt solution}=\frac{\text{Weight of the stone in the air - Weight of the stone in the Water}}{\text{Weight of the stone in the air - Weight of the stone in the salt solution}}$

Relative Density of the stone in the salt solution $=\frac{(W_1-W_2)g}{(W_1-W_3)g}=\frac{(272-192)g}{(272-176)g}$