List of top Chemistry Questions

On addition of the 1ml. solution of \(10\%\) NaCl to 10ml gold sol in the presence of 0.00399gm of starch calculate the gold no.

PhCOOH and PhCH3 can be separated by

In which of the following does the central atom exhibit an oxidation state of +2 ? 

In the hydration of an alkene carbocation is formed from :

The compound formed when 2- butenes is treated with hot alkaline \(KMnO_{4}\) is:

(a) At infinite dilution, the ionic conductance of Ba2+ and Cl is 121 and 76 ohm-1 cm respectively. What will be the equivalent conductance of BaCl2 (in ohm-1 cm2) at infinite dilution?  
(b) What effect does concentration have on the molar conductivity of a strong electrolyte?

A sample of H2SO4 is labeled as 86% by weight by weight. What is the molarity of acid?

Whet volume of acid to be used to make 1 litre of 0.2M H2SO4?

The magnetic moment of a transition metal compound has been calculated to be 3.87 bms.The metal ion is 

  1. Define molar conductivity of a substance and describe how for weak and strong electrolytes, molar conductivity changes with concentration of solute. How is such change explained?
  2. A voltaic cell is set up at 25°C with the following half cells:
    Ag+ (0.001 M) | Ag and Cu2+ (0.10 M) | Cu

What would be the voltage of this cell? (Eo cell = 0.46 V)

The number of water molecules present in a drop of water (volume 0.0018 mL) density = 18 $mL^{-1}$ at room temperature is

which of the following cation would have greatest stability?

The structure of $ {XeF_6} $ is

If a reaction follows the Arrhenius equation, the plot lnk vs 1/(RT) gives a straight line with a gradient (–y) unit. The energy required to activate the reactant is

Which of the following will not give a white ppt. when $AgNO_{3}$ is added to its solution?
Electrophilic substitution reactions in haloarenes occur slowly and require more drastic conditions as compared to those in benzene. Halogens are ortho and para-directors.
A biological catalyst is essentially
Which of the following statements is not true about glucose?
Which of the following substance has the highest melting point?
Nascent hydrogen consists of
Which one of the following is incorrect?
The stability of the following alkali metal chlorides follows the order
A solution of $MgCl_2$ in water has pH
Electronic configuration of an element 'X' having atomic number 24 is
The nucleus of an atom consists of
Which one is a broad spectrum antibiotic ?