List of top Chemistry Questions

Match list I with list II

 

 List I

 

List II

ASideriteIAluminum
BMalachiteII Iron 
CCalamineIIICopper 
DBauxiteIVZinc

Choose the correct answer from the options given below: 

Match list I with list II 

 List I (Transition Metals)  List II (Maximum Oxidation State)
ATiI7
BV II4
CMnIII5
DCuIV2

Choose the correct answer from the options given below:

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: 
Calculate the molarity of a solution containing 5g of NaOH in 450 mL solution .
The product of the following reaction is:
product for OC2H5+HBr
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:

The metal refined by Van Arkel method is

Caprolactam is the starting material for 

Which of the following is a positively charged Sol?

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

Arrange the following hydrides in increasing order of thermal stability. 
A. $H_20$ 
B. $H_2Se $
C.$H_2Po$ 
D. $H_2Te$ 
E. $H_2S$ 
Choose the correct answer from the options given below:

Among the following statements. choose the correct statements. 
A. Boiling point of alcohols increases with increase in the number of carbon atoms. 
B. In alcohols, boiling points increases with increase of branching in carbon chain. 
C. Boiling points of alcohols are lesser in comparison to haloalkanes of comparable molecular mass. 
D. Boiling points of alcohols are higher in comparison to hydrocarbons of comparable molecular mass. 
E. The high boiling points of alcohols are mainly due to the presence of intramolecular hydrogen bonding. 
Choose the correct answer from the options given below: 

Match list I with list II 

 

List I 

 

List II 

AAmmonia IOstwald's process
B Chlorine IIContact process 
CSulphuric AcidIIIDeacon process
DNitric AcidIVHaber's process

 Choose the correct answer from the options given below:

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

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

Out of the following artificial sweetening agents, which one has highest sweetness value in comparison to cane sugar?
Magnetic moment of a divalent ion in aqueous solution of an element with atomic number 25 is:
The oxide which contains an odd electron at the nitrogen atom is
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R)
Assertion (A) : Boron is unable to form BF63-
Reason (R) : Size of B is very small
In the light of the above statements, choose the correct answer from the options given below:
Octahedral complexes of copper(II) undergo structural distortion (Jahn-Teller). Which one of the given copper(II) complexes will show the maximum structural distortion?
(en – ethylenediamine;H2N−CH2−CH2−NH2)
Statement I: The boiling points of the following hydrides of group 16 elements increases in the order - H2O < H2S < H2Se < H2Te
Statement II: The boiling points of these hydrides increases with increase in molar mass.
In the light of the above statements, choose the most appropriate answer from the options given below:
Identify the element which has highest second ionization enthalpy
Choose the correct stability order of group 13 elements in their +1 oxidation state

Compound A contains 8.7% Hydrogen, 74% Carbon and 17.3% Nitrogen. The molecular formula of the compound is,
Given : Atomic masses of C, H and N are 12, 1 and 14 amu, respectively. 
The molar mass of the compound A is 162g mol–1.

The first ionization enthalpy of Na, Mg and Si, respectively, are : 496, 737 and 786 kJ mol–1. The first ionization enthalpy (kJ mol–1) of Al is: