List of top Chemistry Questions

What is the law of conservation of mass?
What causes corrosion of iron?
Which substance can oxidize ethanol to ethanoic acid?
What makes graphite a good conductor of electricity?
What property allows carbon to form large molecules by bonding with itself?
Compounds with the same molecular formula but different structures are called
Which series contains compounds differing by a $ -CH_2 - $ unit?
What is the product formed when magnesium ribbon is burnt in oxygen?
Which functional group is present in carboxylic acids?
What type of bond is formed when a metal transfers electrons to a non-metal?
What happens when zinc is added to a solution of iron (II) sulfate?
What is the process of forming a thick oxide layer on aluminium called?
What is the name of the process where carbonate ores are converted to oxides by heating in limited air?
Which of the following is an ore of mercury?
What kind of bond exists in a molecule of nitrogen ($N_2$)?
Why are metals like potassium and sodium stored in kerosene oil?
Why are cooking vessels made up of metals like copper and aluminium?
The spin-only magnetic moment (\(\mu\)) value (B.M.) of the compound with the strongest oxidising power among \(Mn_2O_3\), \(TiO\), and \(VO\) is ________________________ B.M. (Nearest integer).
Consider the following data: - Heat of formation of \( CO_2(g) \) = -393.5 kJ mol\(^{-1}\) - Heat of formation of \( H_2O(l) \) = -286.0 kJ mol\(^{-1}\) - Heat of combustion of benzene = -3267.0 kJ mol\(^{-1}\) The heat of formation of benzene is ________________________ kJ mol\(^{-1}\) (Nearest integer).
Total number of molecules/species from the following which will be paramagnetic is ________________________. \[ O_2, O_2^+, O_2^-, NO, NO_2, CO, K_2[NiCl_4], [Co(NH_3)_6]Cl_3, K_2[Ni(CN)_4] \]
A group 15 element forms \( d\pi - d\pi \) bond with transition metals. It also forms a hydride, which is the strongest base among the hydrides of other group members that form \( d\pi - d\pi \) bonds. The atomic number of the element is ________________________.

0.1 mole of compound S will weigh ...... g, (given the molar mass in g mol\(^{-1}\) C = 12, H = 1, O = 16)

If \(A_2B \;\text{is} \;30\%\) ionised in an aqueous solution, then the value of van’t Hoff factor \( i \) is:

Given below are some nitrogen containing compounds:
Each of them is treated with HCl separately. 1.0 g of the most basic compound will consume ...... mg of HCl.
(Given Molar mass in g mol\(^{-1}\): C = 12, H = 1, O = 16, Cl = 35.5.)

Choose the correct statements:
(A) Weight of a substance is the amount of matter present in it.
(B) Mass is the force exerted by gravity on an object.
(C) Volume is the amount of space occupied by a substance.
(D) Temperatures below 0°C are possible in Celsius scale, but in Kelvin scale negative temperature is not possible.
(E) Precision refers to the closeness of various measurements for the same quantity. Choose the correct answer from the options given below: