Type metal used in printing press is an alloy of
1). lead and copper
2). lead and antimony
3). lead and bismuth
4). lead and zinc.
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1. Cement is formed by strongly heating a mixture of
3. Among the fuels given below the one with highest calorific value is
4. Photographic plates are coated with a film of -
5. The most reactive among the halogens is
6. Which of the following processes is used for the production of Biodiesel ?