Index Properties 3

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Hydrometer and Pipette method of analysis-Index properties MCQ 

1. Pipette method is standard _____________ method used in laboratory 

A) Solvent
B) Colloidal
C) Sedimentation
D) None of these

... Answer is C


 

2. In hydrometer analysis reading is always taken from the

A) lower meniscus
B) upper meniscus
C) average of both reading
D) None of these

... Answer is B
hydrometer readings increase in the downward direction, towards the bulb 
 

3. Hydrometer readings increase in the____________ direction, towards the bulb

A) Downwards
B) Upwards
C) Central
D) None of these

... Answer is A

 

4. The difference between Hydrometer method and Pipette method is _________

A) how quickly particles disperse
B) procedural steps
C) how observation is taken
D) all of above

... Answer is C

 

5. The process of removal of organic matter and calcium compounds is called__________

A) Transpiration
B) Pretreatment
C) Evapouration
D) Vapourisation

... Answer is B

 

6. The nature of correction of temperature for hydrometer is_________ 

A) +/- keeping standard at 27°C
B) + only
C) - only
D) All the above

... Answer is A

 

7. Dispersion correction for hydrometer is always

A) Negative
B) Positive
C) Both above
D) None of these

... Answer is A 

 

8. The visibility of soil suspension in hydrometer method of analysis is__________ 

A) Opaque
B) Transperent
C) Translucent
D) None of the above

... Answer is A
Density of the soil suspension is high
 

9. Dispersing agents added to soil in pipette method is known as__________agent.

A) Retardent
B) Calgon
C) Catalyst
D) Deflocculating 

... Answer is D
Dspersion agents gives cementing properties to the soil || Calgon is Sodium hexametaphospate, which is used for preparing the soil suspension  
 

10. Which one is more accurate method of sedimentation analysis

A) Pipette Method
B) Hydromater method
C) Both equally accurate
D) None of above

... Answer is A
Pipette method is more accurate. However for quick particle size analysis hydrometer method is used.
 

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