Chemistry
Match the following scientists in column A with their discoveries or contribution in column B :
| Column A | Column B |
|---|---|
| (a) Marie Curie | (i) Safety lamp |
| (b) John Dalton | (ii) Helium |
| (c) William Ramsey | (iii) Nobel prize winner (two times) |
| (d) Sir Humphry davy | (iv) Atomic theory |
Related Questions
Write "True" of "False" against the following statements and correct the false ones.
(a) Chemistry plays an important role in our national economy. ……………
(b) Antibiotics are used as preservatives. ……………
(c) D.D.T. is an important fertiliser. ……………
(d) Gunpowder is an insecticide. ……………
(e) Enzymes secreted by our body are chemicals. ……………
Match the following words in column A with those in column B :
Column A Column B (a) Clothing (i) toothpaste,
cosmetic(b) Green revolution (ii) nylon,
wool(c) Building materials (iii) agriculture (d) Commodities of
daily use(iv) mortar, cement Name the scientists who discovered the following:
(a) Atoms
(b) Oxygen
(c) Safety lamp
(d) Elements
Give two examples for each of the following substances:
(a) food preservatives
(b) fuels
(c) fungicides
(d) medicines
(e) building materials
(f) chemical war weapons