1.A convex meniscus in burets is an indication of all the following , except: Select one a . Dissolved solutes b . Incomplete wetting of the inner surface of the buret cDirty buret d Undetected air bubbles 2.To assure stability of light - sensitive chemical reagents , this container is used Select one : a Rubber bottle bAmber bottle C. Flint bottle d. Plastic bottle 3. To easily observe reactions between solutions , with or without heating , the following are correct , except : Select one : a . A test tube rack should be used especially if there is a time required for the reaction to proceed to completion b. Use of a test tube holder is the best practice most of the time. C.Use a test tube as the container d. Wearing of gloves while holding the tube is sufficient enough for most procedures especially if the sample is to be heated
1.A convex meniscus in burets is an indication of all the following , except: Select one
a . Dissolved solutes
b . Incomplete wetting of the inner surface of the buret
cDirty buret
d Undetected air bubbles
2.To assure stability of light - sensitive chemical reagents , this container is used Select one :
a Rubber bottle
bAmber bottle
C. Flint bottle
d. Plastic bottle
3.
To easily observe reactions between solutions , with or without heating , the following are correct , except :
Select one :
a . A test tube rack should be used especially if there is a time required for the reaction to proceed to completion
b. Use of a test tube holder is the best practice most of the time.
C.Use a test tube as the container
d. Wearing of gloves while holding the tube is sufficient enough for most procedures especially if the sample is to be heated
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