List of top Chemistry Questions

An element crystallises in fcc unit cell with cell edge length of \(3.608\times 10^{-8}\) cm, the density of element is \(8.92\text{ gcm}^{-3}\). Calculate the atomic mass of element (\(\text{N}_A = 6.022\times 10^{23}\)).
When a mixture of two different alkyl halides reacts with metallic sodium in dry ether, the formation of a possible number of alkanes are-
Identify the product of reforming reaction of n-hexane in the presence of \(\text{V}_2\text{O}_5\) over alumina.
Calculate the number of unit cells present in \(1\) g metal if the product of the density of metal and the volume of unit cell is \(2.5\times 10^{-22}\) g.
Which one of the following compound will show addition of HBr to alkene according to markownikoff's rule?
Identify the compound formed when But-2-ene is treated with \(\text{KMnO}_4\) in dilute \(\text{H}_2\text{SO}_4\).
The solubility of sparingly soluble salts \(\text{MX}_1\), \(\text{MX}_2\) and \(\text{MX}_3\) is \(1\times 10^{-3}\) mol/L. Hence, their respective solubility products are
Which of the following properties of a system depends upon the amount of matter and path?
Which of the following processes has \(\Delta S\) negative?
Identify the strongest base according to Bronsted-Lowry theory from following.
Identify the alkali metal having the smallest atomic size from following.
The dissociation constant of weak acid HA is \(1.5\times 10^{-5}\). Find the percent dissociation, containing \(0.2\) moles per \(2\) liters of solution.
What happens to the size of atoms in p-block elements when we move from left to right in the same period?
Which of the following order of dipole moment for stated molecules is correct?
\(\text{C}_2\text{H}_5\text{OH}(l)+3\text{O}_2(g)\rightarrow 2\text{CO}_2(g)+3\text{H}_2\text{O}(l)\)
The value of enthalpy change (\(\Delta H\)) for above reaction at \(27\,^{\circ}\text{C}\) is \(-1366.5\) kJ \(\text{mol}^{-1}\). Then value of internal energy change for the same reaction at this temperature will be
Calculate the de Broglie wavelength of an electron in the first Bohr orbit of a hydrogen atom if the velocity of an electron in the first orbit is \(2.2\times 10^6\text{ ms}^{-1}\). [mass of electron \(= 9.1\times 10^{-31}\) kg, plank's constant (h) \(= 6.626\times 10^{-34}\) J s]
Calculate the compressibility factor of \(1\) mole of a certain real gas if it occupies \(0.4\text{ dm}^3\) at \(300\) K and \(40\) atm. [R \(= 0.082\) atm \(\text{dm}^3\text{K}^{-1}\text{mol}^{-1}\)]
Which group elements have the smallest atomic radii in their respective periods?
What is the approximate mass of the precipitate formed when \(50\) mL of \(16.9\%\) solution of \(\text{AgNO}_3\) is mixed with \(50\) mL of \(7.45\%\) KCl solution? (Molar mass of \(\text{AgNO}_3 = 169\) g/mol, KCl \(= 74.5\) g/mol, AgCl \(= 143.3\) g/mol)
Which of the following is chain growth polymer?
Identify the polymer obtained by addition polymerization method from following.
Identify the use of Formalin from the followings.
Identify the term used for drugs that reduce or relieve pain without causing loss of consciousness.
What type of amine is Iso propyl amine ?
Which of the following compounds forms starch on polymerization?