Practice Test/Quiz or MCQ (Multiple Choice Questions) with Solutions of Chapter "Is matter around us pure" are available for CBSE Class 9 Science and have been compiled as per the syllabus of CBSE Class 9 Science
Q. Milk is a _______ solution while vinegar is a ________ solution.
A liquid and a solid together consisting a single phase is known as :
The zig-zag movement of dispersed phase particle in a colloidal system is known as :
Milk is :
Scattering of light takes place in :
Foam is a colloidal solution of :
Which of the following forms a colloidal solution in water ?
Movement of colloidal particles under the influence of electrical field is called :
Gelatin is also called as :
The sky looks blue due to :
In colloidal state, particle size ranges from :
Tyndall effect is observed in :
Brownian movement is due to :
Difference between a crystalloid and a colloid is in :
Blood is __________ charged sol.
Ice cream is an example of :
Water loving colloids are called :
The technique used in ultra-microscope is :
Coagulation occurs due to :
Sol is :
The separation of colloidal particles from those of molecular dimensions is called :
Liquid dispersed in gas is called :
The most abundant element in the earth's crust is :
Oxygen is the most abundant element in the Earth's crust. Oxygen makes up 467,100 ppm (parts per million) of the Earth's crust, or 46.6%. It exists as a major compound of the silicate minerals where it combines with other elements. It also exists as a compound in carbonates and phosphates. Oxygen has industrial, medical, and commercial purposes. It is used with acetylene to cut and weld metals. It is used in hospitals to ease respiratory disease and can also be used to manufacture explosives among other numerous uses.
The most abundant metal in the earth's crust is :
Drinking soda is an example of a solution of :