Page 37 - GK-8

8 M M 32 E E
Medicinal Plantsedicinal Plantsedicinal Plants
Everyday Scienceveryday Scienceveryday Science

Answer the following questions:

1. Which acid is found in lemon juice ?

2. Which acid does tomato sauce contain ?
3. Which gas is also known as marsh gas ?

4. Which gas is known as laughing gas ?

5. Which material is used as the element of an electric heater ?

6. Which gas in its solid form is known as dry ice ?

7. What metal is used in the filament of electric bulb ?

8. Of which single element is diamond composed ?
9. Which material is widely used in the making of a computer chip ?

10. What is the chemical name for baking soda ?

11. Who proposed that the first letter in the name of an element by
used as its symbol ?

12. Which metal produces fire when dropped in water ?

13. Which gas, when discovered was called 'dephlogisticated air' by
Joseph Priestly in 1774 ?

14. Which unstable gas, discovered in 1840, takes its name from the
Greek for 'I smell' on account of its pungent odour ?

15. Which colourless gas, with no odour, lighter than air, found in
abundance in nature and is highly explosive in some forms ?

Electric
Electric bulb Diamond Computer Chip Lemons
Heater
CluesCluesClues

Methane, Carbon dioxide, Ozone, Hydrogen, Sodium, Oxygen, Citric acid, Nitrous oxide, Acetic
Acid, Carbon, Nichrome, Sodium bicarbonate, Tungsten, J.J. Berzelius, Gallium Arsenide

G.K. Magic-8 5 G.K. Magic-8 37 6 G.K. Magic-8