List of top Chemistry Questions

Why should curd and sour substances not be kept in brass and bronze vessels?
What is an indicator? Write the names of two indicators.
Why is sodium metal kept immersed in kerosene?
What is vinegar?
Draw two structural isomers having the formula \(\text{C}_4\text{H}_{10}\).
Which is more useful between soap and detergent, and why?
What is the name of the hardest allotrope of carbon?
What is meant by hydrogenation or addition of hydrogen? What is its application in industry?
What is an amalgam?
Write two differences between metals and non-metals based on chemical properties.
What is the common name of the compound \(\text{CaOCl}_2\)?
What type of oxide is formed when a non-metal combines with oxygen?
Write two important uses each of washing soda and baking soda.
Which gases are produced at the cathode and anode during the electrolysis of acidulated water?
Give an example of an antacid.
Write the name of a carbon-less functional group.
What happens when an iron nail is dipped in copper sulfate solution? Write with equation.
Why are packets of oily or fatty foods flushed with nitrogen gas?
In the following reaction, which substance is oxidized and which is reduced?
\(4\text{Na} + \text{O}_2 \rightarrow 2\text{Na}_2\text{O}\)
Write the structural formula of ethanoic acid.
Write the IUPAC name of \(\text{CH}_3-\text{C}\equiv\text{CH}\).
Which gas is usually evolved when an acid reacts with a metal? How will you test the presence of this gas?
Which metal has the lowest thermal conductivity?
Which of the following is not a chemical change?
Which of the following metals remains in liquid state at room temperature?