List of top Chemistry Questions

X and Y in the following reactions are:
(CH3–CH2)2C=O → HCN/KCN → X → LiAlH4 → (CH3)2C(OH)CH2NH2

Identify the product formed in the given reaction. 

In following pairs, the one in which both transition metal ions are colourless is :
Which is the least electronegative element among the following?
The carbonate ore among the following is
Which of the following process is used for the purification of crude metal?
Identify an acidic flux among the following.
One mole of Propane (C3H8) on combustion given 'x' kilo joules at STP. Heat liberated by the combustion of 11.2 litres of Propane at STP in kilo joules is
The more reactive metal in the activity series is
The orbital with more penetration power towards nucleus is
Solution with pH less than 7 is
4f elements are called as
Which of the following is a non metal?
In endothermic reaction, heat is
Bases can give _____ ions in water.
Identify the salt in the following.
Maximum number of electrons present in an orbital of atom is
Which one of the following metal occurs in the native form?
\(A Na+BHO→ C NaOH + DH2,\) in this equation the values of \(A, B, C \) and \(D\) are 
Washing Soda is used in ____ .
Which of the following pair of atomic numbers indicates the s-block elements?
The electronic configuration of an element is 2, 8, 6. Which one of the following element is chemically similar to the above element?
The element which belongs to 3rd period and 14th group in Modern periodic table is
Compound formed when excess \(CO_2\) is passed through lime water
Order of energy of orbitals