Advertisements
Advertisements
Question
One of the following does not show Tyndall effect. This one is :
Options
soap solution
ink
sugar solution
starch solution
Advertisements
Solution
sugar solution
Sugar solution does not show Tyndall effect because sugar solution is a true solution and not a colloid.
APPEARS IN
RELATED QUESTIONS
Gases have definite volume but no definite shape.
Name the terms for the particles of matter which may or may not have independent existence.
What are the characteristics of matter?
What is Brownian motion? Draw a diagram to show the movement of a particle (like a pollen grain during Brownian motion.
Name one solid, one liquid and one gaseous non-metal.
Fill in the following blanks with suitable words :
The elements which are sonorous are called ..........................
Which of the following are ‘pure substances’ ?
Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air
Which of the following are compounds ?
- CO
- No
- NO
- Co
State whether colloidal solutions are homogeneous or heterogeneous.
A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.
Explain what happens when a beam of light is passed through a colloidal solution.
What is the difference between colloids and suspensions ?
How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water ?
How will you separate iron pins from sand ?
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
The given mixture contains three constituents A, B and C. The constituent A is a yellow coloured, solid element which dissolves in a liquid D. The constituent B is a blue coloured salt which is insoluble in liquid D but dissolves easily in another liquid E. The constitudent C is a liquid which is used in cooking food and forms a solid fat on hydrogenation.
(a) What do you think could (i) constituent A, and (ii) liquid D be ?
(b) What could (i) constituent B, and (ii) liquid E be ?
(c) What could liquid C be ?
(d) How will you separate the mixture containing A, B and C ?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
How did she identify what she needed?
______ is a smallest particle.
Match the physical quantities given in column A to their S I units given in column B:
| (A) | (B) | ||
| (a) | Pressure | (i) | cubic metre |
| (b) | Temperature | (ii) | kilogram |
| (c) | Density | (iii) | pascal |
| (d) | Mass | (iv) | kelvin |
| (e) | Volume | (v) | kilogram per cubic metre |
Define the term matter.
