List of top Chemistry Questions

Which of the following is considered to be an anticancer species?

In $BrF_3$ molecule, the lone pairs occupy equatorial positions to minimise

In a regular octahedral molecule, MX₆ the number of X–M–X bonds at 180º is

The radioactive isotope $_{27}^{60}\textrm{Co}$ which is used in the treatment of cancer can be made by (n, p) reaction. For this reaction the target nucleus is

Identify the gas which is readily adsorbed by activated charcoal

In the manufacture of ammonia by the Haber's process, ${N_{2(g)} +3H_{2(g)} <=> 2NH_{3(g)} + 92.3 kJ} $, which of the following conditions is unfavourable ?

The bond order in NO is 2.5 while that in $NO^+$ is 3. Which of the following statements is true for these two species ?

The pair of compounds having metals in their highest oxidation state is

Which one of the following ion has the highest value of ionic radius ?

Aluminium displaces hydrogen from dilute HCl whereas silver does not. The E.M.F. of a cell prepared by combining $Al /Al^{+3}$ and $Ag/Ag^{+}$ is $2.46\, V.$ The reduction potential of silver electrode is $+ 0.80\, V$. The reduction potential of aluminium electrode is :

In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to :

When $50\, cm ^{3}$ of $0.2\, N$ $H_{2} SO _{4}$ is mixed with $50 cm ^{3}$ of $1 N\, KOH$, the heat liberated is :

Number of electrons in the valence orbit of nitrogen in an ammonia molecule are

Propene on addition with $ HI, $ gives:

Ethyl chloride is converted into diethyl ether by:

Acetylene on treating with $Cu _{2} Cl _{2}$ gives :

Using anhydrous AlCl₃ as catalyst, which one of the following reactions produces ethylbenzene (PhEt)

The molecular formula of diphenylmethane How many structural isomers are possible when one of the hydrogens is replaced by a chlorine atom

A solid compound 'X' on heating gives CO₂ gas and a residue. The residue mixed with water forms 'Y'. On passing an excess of CO₂ through 'Y' in water, a clear solution, 'Z' is obtained. On boiling 'Z', compound 'X' is reformed. The compound 'X' is

Which of the following will not form a yellow precipitate on heating with an alkaline solution of iodine

Among K, Ca Fe and Zn, the element which can form more than one binary compound with chlorine is

The enzyme which hydrolysis triglycerides to fatty acids and glycerol is called

The helical structure of protein is stabilized by

Which one of the following structures represents the peptide chain

The poisonous gas obtained on exposing chloroform to air and sunlight is