Question

Which one of the following is a physical change?

1 point

Burning of magnesium

Exposure of iron to moisture

Dissolution of sugar in water

Formation of a compound

Clear selection

Emulsion is a colloidal solution of liquid in ________.

1 point

Solid

Liquid

Gas

AirSolution of soap in water is a

1 point

True solution

Colloidal solution

Suspension

None of the above
Which disease is prevented by immunizing with BCG?

1 point

(a) Pneumonia

(b) Tuberculosis

(c) Polio

(d) Amoebiasis



Which disease is prevented by immunizing with BCG?

1 point

(a) Pneumonia

(b) Tuberculosis

(c) Polio

(d) Amoebiasis



​

Answer 1

Answer:

dissolution of sugar in water.

solid

suspension

amoebiasis