81. Specific gravity for most of the building stones lies between
82. For melting one tonne of cast iron
83. A volatile substance added to a paint to make its application easy and smooth, is known as
84. Name the type of cement from the following for canal linings:
85. Study the following statements.
(i) Hydraulic lime is suitable for white washing,
(ii) Fat lime is suitable for whitewashing,
(iii) Hydraulic lime is suitable for making mortar,
(iv) Fat lime is suitable for making mortar.
(i) Hydraulic lime is suitable for white washing,
(ii) Fat lime is suitable for whitewashing,
(iii) Hydraulic lime is suitable for making mortar,
(iv) Fat lime is suitable for making mortar.
86. The commonly used drying oil for oil paints, is
87. Formula for quick lime, is
88. Plywood is normally available
89. Smith's test of stones is performed to find out
90. Refractory bricks resist
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