Quickly revise the entire Class 9 Science syllabus. Symmetry Education

Описание: Quickly revise the entire Class 9 Science syllabus with this educational video from Symmetry Education. Perfect for exam prep! #science #class9 #exam
Class-9th Science full syllabus Quick Revision. Symmetry Education #science #class9 #exam
Science Class9th

1. Give two differences between compound and mixture.
2. Mass of a body is 25 g, if its momentum is 0.40 Kg m/s. Find its KE.
3. Calculate molecular mass of Na2CO3, CaCl2.
4. Write formula of a. Ammonium chloride. b. Aluminium sulphate c. Zinc nitrate.
5. What happens to the force between two objects, if-

a. Mass of one object is doubled

b. Distance between object is doubled.

с. The masses of both objects are doubled.

6. Write different elements present in quick lime and sodium bicarbonate.
7. A wave source produces 40 crests and 40 troughs in 0.2 sec. Find the frequency of the wave.
8. Differentiate manure and fertilizers.
9. A ball thrown up vertically returns to ground after 4 s. Find-

a. Velocity with which it was thrown.

b. Maximum height it reaches.

10. An element has 13p, 13e and 14n. Write its-

a. Atomic number
b. Valency
c. Type of ion produced
d. Identify element
science class 9 symmetry Education