Question

SUMATIVE ASSESSMENT - 1
Class: 9
Subject: Chemistry
Marks: 17
5x1=5
Choose the correct answer:-
1. One common method used to separate dyes is
a) Filtration
b) Distillation
c) Chromatography d) Conductivity
2. The atomicity of K2Cr2O7 is
a) 9 b)11 c)10
d) 12
3. During summer water kept in an earthen pot becomes cool
because of the phenomena of
a) Evaporation b) Diffusion
c) Transpiration d) Osmosis
4. An example for diatomic molecule is
a) Sulphur
b) Ozone
b) Argon
d) Nitrogen
5. Tincture of iodine has antiseptic properties, this solution is made
by dissolving
a) lodine in potassium oxide b) lodine in alcohol
c) lodine in Vaseline
d) lodine in water​

Answer 1

Answer:

1 number answer is c.2 number answer is b.3 number answer is a.4 number answer is d.5 number answer is b