The color of an aqueous solution of zinc sulphate as observed in the laboratory is:
Green
Yellow
Blue
Blue
D.
Blue
To show that zinc is a more active metal than copper, the correct procedure is to:
Add dilute nitric acid on strips of both the metals.
Observe transmission of heat through strips of zinc and copper.
Prepare a solution of zinc sulphate and hang a strip of copper into it.
Prepare a solution of zinc sulphate and hang a strip of copper into it.
Acetic acid solution turns:
blue litmus red
red litmus blue
blue litmus colourless
blue litmus colourless
On adding NaHCO3 to acetic acid, a gas is evolved which turns lime water milky due to the formation of:
Calcium bicarbonate
Calcium hydroxide
Calcium carbonate
Calcium carbonate
A yeast cell in which budding occurs was seen to have:
one bud cell
two bud cell
three bud cell
three bud cell