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“What is the different between height and radius of solid cylinder?” Which of the following option is sufficient alone to find the answer? A) A solid cylinder is made by melting a solid sphere. The radius of cylinder is 3 times the radius of a circle whose area is 154 sq.m. Height of cylinder is equal to the height of cone whose volume is 2772 cubic meters. B) Area of a rectangle whose longer side is ¾ times the radius of a solid cylinder, is 168 sq.m and, Volume of solid cylinder is 2772 cubic meters and its height is 18 m. C) A metallic cone of radius 15m and height 35m is melted into the solid cylinder of radius equal to the radius of a circle whose area is equal to the area of rectangle whose sides are in the ratio 4 : 3 respectively. D) The curved surface area of the solid cylinder is 3 time the surface area of a sphere of radius 7m and height of cylinder is equal to the height of a metallic cone whose curved surface area is 308 sq.m. 
Cloud point described in the oil and gas industry is the temperature (minimum), at which the lubricant under consideration coverts to semi solid and in fact the lubricant losses its flow properties.
Which one of the following is a widely used as solid lubricant?
Consider a given volume of liquid at a temperature T below Tm with a free energy G’. If some of the atoms of the liquid cluster together to form a small sphere of solid, the free energy of the system will change to G, given by________ (Assume V1 volume of the solid sphere, V2 volume of liquid, A is the solid/liquid interfacial area, γ solid/liquid interface free energy, G1 and G2 are the free energies per unit volume of solid and liquid respectively).
A solid X is in thermal equilibrium with a solid Y. Solid Y has the same temperature as solid Z. If the three solids have different masses and compositions, which one of the following statements is correct? 
Lubricating grease is a solid to semi-solid dispersion of a thickening agent in a liquid lubricant.
A solid cube is cut out from a solid cuboid of length, breadth are in the ratio 3 : 2 and the height of cuboid is 3 less than the breadth. If the area of four walls of cuboid is 200 cm2 then find the total surface area of the resultant solid where side length of cube is 60% of the height of the solid cuboid. 
A hollow cylinder is formed by cutting out a solid cylinder of radius r/k from a solid cylinder of radius r. The height of both solid cylinders was equal. The volume of the hollow cylinder m times the volume of the new solid cylinder. What is the relationship between m and k?
200 kg of solids (on dry basis) is subjected to a drying process for a period of 5000 seconds. The drying occurs in the constant rate period with the drying rate as, Nc = 0.5 × 10-3 kg/m2.s. The initial moisture content of the solid is 0.2 kg moisture/kg dry solid. The interfacial area available for drying is 4 m2/1000 kg of dry solid. The moisture content at the end of the drying period is (in kg moisture/kg dry solid)
The temperature dependence of the electrical conductivity σ of two intrinsic semiconductors A and B is shown in the figure. If EA and EB are the band gaps of A and B respectively, which one of the following is true?
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