Who first discovered the every eighth element had properties similar to that of the first?
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What is 12 S of the Z?
12 S of Z represents 12 Signs of the Zodiac.
It is similar to the
1. 52 W in a Y - 52 weeks in a year
2. 3 H in a C - 3 Hands in a Clock
3. 3600 S in an H - 3600 Seconds in an Hour
4. 5 O in the W - 5 Oceans in the World
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What is the position of metallic ion and non-metallic ion in a chemical formula?
Plants of which group are predominantly aquatic?
Which of the following statements are CORRECT?
I. Esters are sweet smelling substance.II Esters are used in making perfumes.III. Functional group of ester is R-O-RꞋ.
The relative density of a substance is the ____.
Which of the following plant group has hidden reproductive organs?
The movement of water molecules through the plasma membrane is called ______.
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