Advertisements
Advertisements
Question
Name a metal which can be easily cut with a knife.
Advertisements
Solution
Sodium can be easily cut with a knife.
APPEARS IN
RELATED QUESTIONS
An inflated balloon full of air goes down slowly (becomes smaller and smaller slowly) even though the knot at the mouth of the balloon is airtight. And after a week all the air has escaped from the balloon. Explain how the air particles got out of the balloon.
When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface.
- What could particles X be ?
- What do you think liquid Y is ?
- What is the zig-zag movement of X known as ?
- What is causing the zig-zag movement of particles X ?
- Name the scientist who discovered this phenomenon.
- What does this experiment tell us about the nature of liquid Y?
Name a metal which is soft and a non-metal which is hard.
What is the other name for impure substances ? Give two examples of impure substances.
Which of the following is not an element ?
The element which is not common between the compounds called baking soda and soda ash is
What is the most common way of expressing the concentration of a solution ?
State whether the following statement is true or false :
Bread is an example of solid foam.
Define solubility of a substance. How does it vary with temperature ?
One of the following represents the solution of solid in a solid. This one is :
Name the source from which nitrogen and oxygen are obtained on a large scale.
Name the process by which common salt is obtained from sea-water.
How will you separate a mixture of iron filings and powdered carbon ?
Draw a labelled diagram of the fractional distillation apparatus used for separating a mixture of alcohol and water.
Which of the following cannot be separated from air by the process of fractional distillation ?
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
The particles in the matter are extremely small and can be seen even with a powerful microscope.
In Aerosol the dispersed phase is liquid and the dispersion medium is gas.
Boiling refers to the process by which a substance changes from the liquid to the gaseous state at its ______ point.
