Q 2. Which of the following is a non metal that remains liquid at room temperature?
Q 3. Chlorophyll is a naturally occurring chelate compound in which central metal is.
Q 4. Which of the following is used in pencils?
Q 5. ______________metals forms an amalgam with other metals.
Q 6.Chemical formula for water is.
Q 7. ____________usually filled in the electric bulb is.
Q 8.Washing soda is the common name for.
Q 9. Quartz crystals normally used in quartz clocks etc. is chemically.
Q 10. Which of the gas is known as green house gas?
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