Multiple Choice QuestionsOn adding 2mL acetic acid to 2mL of water in a test tube, it was observed that
a clear and transparent solution is formed.
a white precipitate is formed almost immediately.
two separate layers were formed.
two separate layers were formed.
On adding acetic acid to sodium hydrogen carbonate in a test tube, a student observes.
no reaction
a colourless gas with pungent
bubbles of a colourless and odourless gas
bubbles of a colourless and odourless gas
Which one of the following are the correct observations about acetic acid.
It turns blue litmus red and smells like vinegar
It turns blue litmus red and smells like burning sulpur
It turns red litmus blue and smells like vinegar
It turns red litmus blue and smells like vinegar
The aqueous solutions of copper sulphate and zinc sulphate appear.
blue and green respectively
green and colourless respectively
blue and brown respectively
blue and brown respectively
Solutions of copper sulphate, iron sulphate and zinc sulphate are prepared and marked I, II and III respectively. Few pieces of aluminium are added to each solution after some time a change will be observe in.
I and II
II and III
III and I
III and I
From the following diagrams, select the correct ones showing stages of binary fission in Amoeba:
I,II,III
IV,II,III
V,II,III
V,II,III
Four students showed the following traces of the path of a ray of light passing through a rectangular glass slab.
The trace most likely to be correct is that of student:
I
II
III
III
I
II
III
III
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