List of practice Questions

Which among the following is the lightest particle :
General formula of an alkyne is :
Isotopes of an element have the same :
Which of the following is used to make non-stick cookware :
Symbol of silver is :
An ant sting contains :
Aquaregia contains 3 parts of concentrated HCl and ____.
Which among the following is an insulator :
Red litmus paper turns blue in the solution the pH can be :
When Magnesium (Mg) burn in air, we get Magnesium ____ .
The molecular mass of \(\text{H}_2\text{SO}_4\) acid is :
Bleaching powder is obtained by passing chlorine over :
Name the element whose M-Shell has 2 electrons :
At higher altitude the boiling point of liquid :
During evaporation particles of a liquid change into vapour :
Dry ice on heating produces :
If K, L, M, N shells of an atom are full, the total number of electrons in that atom are :
How many electrons, protons and neutrons are present in Y\(^+\), if atomic number of Y is 19 and mass number of Y is 39 :
The process of evaporation causes :
Resistance of a conductor depends on :
The hot food prepared in the kitchen can be smelt outside the house because of :
Which among the following shows Tyndall effect ?
Which of the following has highest intermolecular force of attraction ?
Number of \(\text{H}_2\text{O}\) (water) molecules in a drop of water weighing 0.5 g is :
An element Z has valency equal to 3, what will be its formula with sulphate ions :