List of top Chemistry Questions

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
X and Y in the following reactions are:
(CH3–CH2)2C=O → HCN/KCN → X → LiAlH4 → (CH3)2C(OH)CH2NH2
Find the product formed for the given reaction.
\[ C_6H_5CHO + H_3C-CH_2CHO \xrightarrow{\text{Dil. NaOH/Δ}} \text{Product} \]
The major product in the given reaction is

Identify the product formed in the given reaction. 

What can be A and B in the following reaction?

The reaction of HClO3 with HCl gives a paramagnetic gas, which upon reaction with O3 produces

The reaction of HClO3 with HCl gives a paramagnetic gas, which upon reaction with O3 produces

The reaction of HClO3 with HCl gives a paramagnetic gas, which upon reaction with O3 produces

The reaction $Pb \left( NO _3\right)_2$ and $NaCl$ in water produces a precipitate that dissolves upon the addition of $HCl$ of appropriate concentration The dissolution of the precipitate is due to the formation of
The metal which dissolves in liquid ammonia to give a blue-black solution due to formation of solvated electron is
Which of the following compounds is used as refrigerant?
The wavelength of the electron in the first orbit of hydrogen atom is \(3.3 \times 10^{-10} \, \text{m}\). The kinetic energy of the electron (in J) is: (Given: \( h = 6.6 \times 10^{-34} \, \text{Js}, \, m_e = 9.0 \times 10^{-31} \, \text{kg} \))
Which quantum number provides information about the shape of an orbital?
The energy required (in eV) to excite an electron in a hydrogen atom from the ground state to the third state is:
What is the functional group present in serine, an amino acid, in addition to \( -\text{NH}_2 \) and \( -\text{COOH} \) groups?
Which hormone tends to increase the blood glucose level in humans?
In the following unbalanced reaction, the product formed is:
NaAlO$_2$ + Al(OH)$_3$ + H$_2$O $\rightarrow$ ?
Which of the following vitamins cannot be stored in the body?
Sugar present in DNA is
Write the name of [Cu(NH\(_3\))\(_4\)]Cl and [Pt(NH\(_3\))\(_4\)]Cl\(_2\) complexes.

Total number of relatively more stable isomer(s) possible for octahedral complex [Cu(en)2(SCN)2] wiil be ______.

In calculating osmotic pressure, the concentration of solution is expressed in
The co-ordination number of the following crystal structure (bcc) is
Which of the following methods are not used to refine any metal?
  1. Liquation
  2. Calcination
  3. Electrolysis
  4. Leaching
  5. Distillation
Choose the correct answer from the options given below :