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Composition, Care And Cleaning Of Different Surfaces

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1. The amount of copper in sterling silver is about -
2. Immersing metal in hot soda solution for few minuets is known as -
3. For tarnished copper _________________ solution may be used for better result .
4. Newspapers are used to remove the mark from -
5. Window cleaners contain a water miscible solvent called as -
9. ________________ is a device that causes suction in order to remove debris from floors,
10. A tool for cleaning floors made of a bundle of cloth with a long handle is known as -
11. ______________ are used to prepare floors and walls in luxury hotels.
12. Which of the following natural stone is made of silica ?
13. Which of the following is an example of resilient hard flooring ?
14. The stain of a stone made floor is generally cleaned by –
15. Which of the following should not be used on stone made floors ?