Polythene is polymer of
1). Ethylene
2). Propylene
3). Acetylene
4). Aniline
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1. Which of the following is a supercooled liquid
2. Milk is a
3. Oxygen which is vital for life is a product of photosynthesis and comes from
4. The substance which does not expand on going from liquid state to solid state is
5. Cobalt - 60 is commonly used in radiation therapy because it emits-
6. Muscle fatigue is caused by the accumulation of:
7. Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water.
9. Nitrogen in water is commonly found in the form of
10. Ultraviolet radiation striking this earth is due to the depletion of