In this section you will find thousands of questions of Chemistry, how to solve each of the questions and the correct answer.
You will have four options in each question, try to answer correctly and if you don't, you will have the option to see the solution or choose another answer.
If you want to know how to solve each question you can click on the option 'How to solve?'
\(\ce{N2O4(g) <=> 2 NO2(g)}\) \(\Delta H = +ve\). In the reaction above, an increase in temperature will
increase the value of the equilibrium constant
shift the equilibrium to the left
decrease the value of the equilibrium constant
increase the proportion of reactants
Which of the following noble gases is commonly found in the atmosphere?
Neon
Xenon
Argon
Helium
A suitable solvent for iodine and naphthalene is
water
carbon(IV) sulphide (CS2)
benzene
ethanol
Hardness of water is mainly due to the presence of
calcium trioxocarbonate (IV) or calcium tetraoxosulphate (VI)
sodium hydroxide or magnesium hydroxide
calcium hydroxide or magnesium hydroxide
calcium chloride or sodium chloride salts
What type of bond exists between an element X with atomic number 12 and Y with atomic number 17?
Dative
Covalent
Metallic
Electrovalent (ionic)
