Question

9 Multiple choice questions
1. Is malleable and ductile best describes -
(a) Solution (6) Metal (c) Compound (d) Non-Metal
2. Which of the following is not an element -
(a) graphite (b) germanium (c) silica (d) silicon
3. Tincture of iodine has antiseptic properties, sol. is made by dissolving -
(a) iodine in potaasium iodine (6) iodine in acetone
c) iodine in water
(d) iodine in alcohal
4. One of the following does not undergo sublimation -
(a) Iodine
(6) sodium chloride
(c) ammonium chloride (d) campher
5. The conversion of solid into vapours without passing through the liquid
state is called -
(a) vaporization (b) fusion (c) sublimation (d) freezing
10 Define the term of diffusion with example?
1LWhat is Brownian motion?
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Answer 1

Answer:

1. Metal

2. silicon

3. Iodine in Alcohol

4. Iodine

5. Sublimation

10. Diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in concentration

Brownian Motion - Brownian motion, or pedesis, is the random motion of particles suspended in a medium.

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