Home
Class 11
PHYSICS
A piece of brass (Cu and Zn) weighs 12.9...

A piece of brass (Cu and Zn) weighs 12.9 g in air. When completely immersed in water, it weights 11.3 g. The relative densities of Cu and Zn are 8.9 and 7.1 respectivey. Calculate the mass of copper in the alloy

A

`6.6gm`

B

`7.6gm`

C

`8.6gm`

D

`5.6gm`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • FLUID MECHANICS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-II) (LEVEL-II More than one correct answer Type Questions )|2 Videos

  • FLUID MECHANICS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-II) (LEVEL-II Integer Type Questions )|1 Videos

  • FLUID MECHANICS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-I) (LEVEL-II Matrix Matching Type Questions)|1 Videos

  • EXPANSION OF SOLIDS

    AAKASH SERIES|Exercise Questions for Descriptive Answers|5 Videos

  • FRICTION

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE PRACTICE SHEET (ADVANCED) (MORE THAN ONE CORRECT ANSWER TYPE QUESTIONS)|1 Videos

Similar Questions

Explore conceptually related problems

What mass of lead will weigh as much as 8g of iron when both are immersed in water? (Given sp. gravity of lead and iron are 11 and 8 respectively).

A certain block weighs 15N in air. But it weighs only 12N when completely immersed in water. When immersed in another liquid, it weighs 13N. Calculate the relative density of (1) the block and (ii) the liquid.

Solubility of iodine of water is 1.1 times 10^-3 mol L^-1 at 290K. When 0.1g of iodine is stirred in 200ml water till the equilibrium is reached at 290K, calculate the mass of undissolved iodine.