- 1. Which of the following sedimentary rocks changes into quartzite by metamorphic action?
- 2. A badly mixed cement concrete results in
- 3. A heavy stone is suitable for
- 4. The softest rock is
- 5. Gypsum is a
- 6. Which of the following has more fire resisting characteristics?
- 7. Quartitze is a
- 8. Sandstone is a
- 9. Which of the following stone is best suited for construction of piers and abutments of a railway bridge ?
- 10. Pug mill is used for
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