List of top Chemistry Questions

Energy of the transition from \( n_h = 4 \) to \( n_l = 2 \) for hydrogen atom is \( E \times 10^3 \) cm\(^{-1}\).
Given: Rydberg constant for hydrogen: \( 1.097 \times 10^7 \, {m}^{-1} \)
Value of E is ............... (rounded off to two decimal places)
Consider the two \( pK_a \) values of valine as 2.32 and 9.62. The isoelectric point (pI) of this amino acid is ....... (rounded off to two decimal places)
The bond order in \( N_2^{2-} \) species is:
Why do acidic solutions conduct electricity?
Which of the following is a synthetic indicator?
What is the chemical formula of Plaster of Paris?
What chemical is responsible for the pain caused by a bee sting?
Which property of metals describes their shiny surface?
If someone in your family is suffering from acidity after overeating, which of the following would you suggest as a remedy?
Which of the following can be used as olfactory indicators?
Tooth decay begins when the pH of the mouth drops below:
Phenolphthalein is used as an indicator in the reaction between
Why does the iron nail become brownish when dipped in copper sulfate solution?
What is the product formed when slaked lime reacts with carbon dioxide during whitewashing?
What causes corrosion of iron?
Which series contains compounds differing by a $ -CH_2 - $ unit?
Which substance can oxidize ethanol to ethanoic acid?
Which functional group is present in carboxylic acids?
What property allows carbon to form large molecules by bonding with itself?
Compounds with the same molecular formula but different structures are called
What makes graphite a good conductor of electricity?
What is the process of forming a thick oxide layer on aluminium called?
What happens when zinc is added to a solution of iron (II) sulfate?
What type of bond is formed when a metal transfers electrons to a non-metal?
What kind of bond exists in a molecule of nitrogen ($N_2$)?