List of top Chemistry Questions

Which of the following does not show electrical conductance?

The strength of ${H_2O_2}$ (in g/L) in 11.2 volume solution of ${H_2O_2 }$ is

A hypothetical electrochemical cell is shown below :- $\overset{T}{A}|A+(xM)||B^+(yM)|\overset{\oplus}{B}$ The emf measured is +0.20V. The cell reaction is:

Which of the following hormones contains iodine?

Which of the following is not true for $S_N1$ reaction ?

The $pH$ of the solution obtained by mixing $100\, ml$ of a solution of $pH = 3$ with $400\, ml$ of a solution of $pH = 4$ is

The correct order of electronegativities of $N, O, F$ and $P$ is

Sucrose is NOT a reducing sugar since

Power alcohol is a mixture of

: Equal moles of different substances contain same number of constituent particles. : Equal weights of different substances contain the same number of constituent particles.

The alcohol having molecular formula $C_4H_9OH$, when shaken with a mixture of anhydrous $ZnCl_2$ and conc. $HCl$ gives an oily layer product after five minutes. The alcohol is

Which one of the following will be most basic?

The well known urinary antiseptic urotropine is formed when formaldehyde reacts with

Which of the following does not contain any coordinate bond?

This reaction is called

Which of the following is an artificial edible colour ?

In which of the following molecules $S$ atom does not assume $sp ^{3}$ hybridsation?

$1 \,L$ of a gas is at a pressure of $10^{-6} \, mm$ of Hg at $25^{\circ} C$. How many molecules are present in the vessel?

Which of the following compounds will react with two moles of $CH_3MgBr$ ?

The product/s of the reaction, is/are: $Na _{2} CO _{3}+ CO _{2}+ H _{2} O \rightarrow$

A synthetic rubber which is resistant to the action of oils, gasoline and other solvents is

For the reaction, $N _{2}( g )+3 H _{2}( g ) \rightleftharpoons 2 NH _{3}( g )$, the unit of $K$ is :

Ozone depletion over Antarctica is due to the

$1 \,g$ of $U -235$ is converted into $UF _{6}$. The radioactivity of $UF _{6}$ thus obtained is :

The $pH$ of a $0.01 \,M\, HCN$ solution for which $pK_a$ is $4$ is