Is Matter Around Us Pure
Tincture of iodine is a solution used as an antiseptic to clean wounds. This is prepared by dissolving solid iodine in:
(1) alcohol
(2) water
(3) carbon di sulphide
(4) ether
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 1 Solution : -. |
Is Matter Around Us Pure
If three gases X, Y, Z are arranged in increasing order of their relative molecular mass and the mass of each gas is 10 g at S.T.P state, which gas will contain the least number of molecule and which the most ?
(1) X least and Y maximum
(2) X maximum and Z least
(3) Y maximum and Z least
(4) Y least and Z maximum
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 2 Solution : -. |
Is Matter Around Us Pure
The dyes of an ink can be separated by.. . . .
(1) filteration
(2) sublimation
(3) fractional distillation
(4) chromatography
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 4 Solution : -. |
Is Matter Around Us Pure
Which of the following statement is not correct
(1) The latent heat of fusion of ice is 3.34 × 105 Joule / kg.
(2) Temperature of melting ice does not rise even though heat is continuously supplied.
(3) Latent heat of vaporisation of water is 30.4 × 105 Joule / kg.
(4) All of the above
A. | Option 1 |
B. | Option 2 |
C. | Option 3 |
D. | Option 4 |
Option: 3 Solution : -. |