Question

1. All matter is made up of small particles.
2. Condensation is a type of solidification.
3. Oil is a universal solvent.
4. Breaking of glass is an example of a physical change.
5. Electric cables appear to hang loosely during winter because of expansion.
II. Write T for the true and F for the false statement.​

Answer 1

Answer:

Take a beaker and fill it with 10 mL of water and add two to three crystals of potassium permanganate.

Now take few measuring cylinders and label them as 1,2,3, 4 … and so on.

Next, fill these cylinders with 50 mL of water. Transfer 5 mL of the solution to the measuring cylinder 1 which has 50 mL of water from the beaker. Mix the water and the solution.

Now, take out 5 mL of the solution from cylinder 1 using a pipette and transfer it into measuring cylinder 2. Shake this mixture.

Take out 5 mL of the solution from cylinder 2 using a pipette and transfer it into measuring cylinder 3. Shake this mixture.

Carry on this process of dilution of the solution in a similar manner.

Answer 2

Explanation:

1. true

2. false

3.false

4.false

5.false