- (A) one which obeys Newton’s law of viscosity
- (B) frictionless and incompressible
- (C) very viscous
- (D) frictionless and compressible
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- (A) particle size is decreased
- (B) the surface area of tank is increased
- (C) the depth of tank is decreased
- (D) none of the above
- (A) 10 to 25
- (B) 50
- (C) 75
- (D) 100
- (A) B
- (B) 2B
- (C) 4B
- (D) 8B
- (A) 1 mg/litre
- (B) 10 mg/litre
- (C) 100 mg/litre
- (D) 1000 mg/litre
- (A) total alkalinity
- (B) total hardness
- (C) total hardness – total alkalinity
- (D) non carbonate hardness
- (A) starch iodide method
- (B) orthotolidine method
- (C) both (A) and (B)
- (D) none of the above
- (A) standard silica scale
- (B) standard cobalt scale
- (C) standard platinum scale
- (D) platinum cobalt scale
- (A) 0.1 mg/litre
- (B) 1.5 mg/litre
- (C) 5 mg/litre
- (D) 10 mg/litre
- (A) calcium carbonate
- (B) magnesium carbonate
- (C) sodium carbonate
- (D) calcium hydroxide
