Stoichiometry

221. One Newton is equal to _________ dynes.

1. 10²
2. 10³
3. 10⁴
4. 10⁵

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222. One of the specific gravity scales is "Brix" (used specifically for sugar solution). It is defined as

1. Brix = (400/G) - 400
2. Brix = 200 (G-1)
3. Brix = 145 - (145/G)
4. None of these

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223. Osmotic pressure exerted by a solution prepared by dissolving one gram mole of a solute in 22.4 litres of a solvent at 0°C will be _________ atmosphere.

1. 0.5
2. 1
3. 1.5
4. 2

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224. Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult's law is proportional to the

1. Temperature
2. Volume of solution
3. Moles of non-volatile solute
4. None of these

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225. Osmotic pressure of the solution can be increased by

1. Decreasing its temperature
2. Increasing the volume of the vessel containing the solution
3. Diluting the solution
4. None of these

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226. Othmer chart is useful in estimating the heat of

1. Mixing
2. Wetting
3. Adsorption
4. None of these

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227. Outer combustion chamber of blast furnace stove is lined with _________ bricks.

1. Fireclay
2. Silica
3. Chrome magnesite
4. Zirconia

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228. Panel test determines the _________ of refractories.

1. Fusion point
2. Spalling resistance
3. Slag penetration resistance
4. Refractoriness under load (RUL)

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229. Percentage saturation of a vapor bearing gas is always _________ the relative saturation.

1. Higher than
2. Smaller than
3. Equal to
4. Either (A) or (B); depends on the system

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230. Permeability of bricks is a measure of the

1. Refractoriness
2. Melting point
3. Rate at which a fluid will pass through the pores
4. Expansion during heating

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