List of top Chemistry Questions

How much charge is required for the reduction of 1 mol of MnO-4 to Mn2+ ?

Among the following statements, choose the correct statements.
A. $SN_2$ reaction proceeds with stereo chemical inversion.
B. The process of conversion of Racemic mixture into enantiomer is known as Racemization
C. A mixture containing 2 enantiomers in equal proportions is brown as Racemic mixture.
D. The stereoisomers related to each other as superimposable mirror image are called enantiomers.
E. The objects which are non-superimposable on their mirror image are said to be chiral and this property is known as chirality.
Choose the correct answer from the options given below:

Atoms of element B form hcp lattice and those of the element A occupy 2/3 rd of tetrahedral voids. What is the formula of the compound formed by the elements A and B?

Match list I with list II

	List I (Transition Metals)		List II (Maximum Oxidation State)
A	Ti	I	7
B	V	II	4
C	Mn	III	5
D	Cu	IV	2

Choose the correct answer from the options given below:

The formula of a noble gas species which is isostructural with BrO-3 is:

$A°$ $m$ for $NaCl$, $HCl$ and $NaAc$ are $126.4, 425.9$ and $91.0$ $S$ $cm^2 $ $mol^{-1 }$respectively. Calculate $A°$ for $HAc$

IUPAC name of neopentyl chloride is

Magnetic moment of a divalent ion in aqueous solution of an element with atomic number 25 is:

Match list I with list II

	List I		List II
A	Ammonia	I	Ostwald's process
B	Chlorine	II	Contact process
C	Sulphuric Acid	III	Deacon process
D	Nitric Acid	IV	Haber's process

Choose the correct answer from the options given below:

Among the following polymers, which one is the copolymer?

Match List I with List II
List I (Nomenclature) List II (Structure)
1. Acetophenone

2. Benzaldehyde

3. Benzonic acid

4. Benzophenone

The decomposition of NH3 on platinum surface is zero order reaction. If k = 2.5 x 10-4 mol L-1 s-1 the rate of production of H2 is

The molecularity of the following elementary reaction is NH4NO2 —> N2 + 2H20

Rate constant "k" for a certain reaction is k = $2.3 \times 10^{-5}$ $L$ $mol^{-1}$ $s^{-1}$. Order of the reaction is:

Consider the 1M aqueous solution of the following compounds and arrange than in the increasing order of elevation in the boiling points.
A. $C_6H_{12}O_6$
B. $NaCl $
C. $MgCl_2 $
D. $AlCl_3$
E. $Al_2(SO_4)_3 $
Choose the correct answer from the options given below:

Which of the following transition metal ion is colourless?

Which of the following is not the characteristic of physisorption?

The metal from first transition series having E° M2+/M value:

The products formed at cathode and anode by electrolysis of aqueous NaCl solution respectively are

Which of the following is a positively charged Sol?

$250$ $g$ solution of $D-glucose$ in water contains 10.8% of carbon by weight. The molality of the solution is nearest to (Given: Atomic Weights are, $H, 1 u; C, 12 u; O, 16 u$)

The limiting molar conductivities of $NaI$, $NaNO_3$ and $AgNO_3$ are $12.7$, $12.0$ and $13.3$ mS m² mol^–1, respectively (all at 25°C). The limiting molar conductivity of $AgI$ at this temperature is ____ mS m² mol^–1.

A rigid nitrogen tank stored inside a laboratory has a pressure of 30 atm at 06:00 am when the temperature is 27°C. At 03:00 pm, when the temperature is 45°C, the pressure in the tank will be _______ atm. [nearest integer]

Given below are two statements :
Statement-I : For KI, molar conductivity increases steeply with dilution.
Statement-II : For carbonic acid, molar conductivity increases slowly with dilution.
In the light of the above statements, choose the correct answer from the options given below :

If the solubility product of PbS is 8 × 10^–28, then the solubility of PbS in pure water at 298 K is x × 10^–16mol L^–1. The value of x is ________. (Nearest integer)
[given : $\sqrt2=1.41$]