Type metal used in printing press is an alloy of
A). Lead and copper
B). Lead and antimony
C). Lead and bismuth
D). Lead and zinc
Lead and antimony
Type metal, alloy of lead, antimony, and tin used to make type characters for printing. By varying the proportions of the metals, the desired properties are produced for different kinds of typecasting and printing processes.
1. The acid present in red ants is
2. Which one of the following metals is used to galvanise iron?
3. Sea weeds are important source of
4. Plastic bottles are made of a polymer called PET. The expanded form of PET is
5. The element which is commonly used in nuclear for producing electricity by nuclear fission is
6. Of the following commonly used materials, the one that is not an alloy is
7. The polymer used in making plastic crockery is
8. Basicity of boric acid, H3BO3 is
9. Question 5.2:Why does physisorption decrease with the increase of temperature?