List of top Chemistry Questions

Which of the following is an incorrect statement?
$2,4-DNP $ test can be used to identify :
If enthalpy of atomisation for $Br_{2(I)}$ is $x \,kJ/mol$ and bond enthalpy for $Br_2$ is $y\, kj/mol$, the relation between them :
Identify the incorrect statement.
The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.
Identify the incorrect match.

Name

IUPAC Official Name
AUnniluniumIMendelevium
BUnniltriumIILawrencium
CUnnilhexiumIIISeaborgium
DUnununniumIVDarmstadtium
Which of the following is not correct about carbonmonoxide ?
Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give :
For the reaction, \(2Cl(g) → Cl_2 (g)\), the correct option is :
An alkene on ozonolysis gives methanal as one of the product. Its structure is :
Which of the following is the correct order of increasing field strength of ligands to form coordination compounds ?
Match the following and identify the correct option
A\(CO(g)+H_2 (g)\)I\(Mg(HCO_3 )_2+ Ca(HCO_3 )_2\)
BTemporary hardness of waterIIAn electron deficient hydride
C\(B_2H_6\)IIISynthesis gas
D\(H_2O_2\)IVNon-planar structure
Elimination reaction of 2-Bromo pentane to form pent-2-ene is :
Identify compound \(X\) in the following sequence of reactions :
Alternative_Text
The freezing point depression constant (\(K_f \)) of benzene is \(5.12 K\ kg\ mol^{−1}\). The freezing point depression for the solution of molality \(0.078\ m\) containing a non-electrolyte solute in benzene is (rounded off upto two decimal places) :
Which of the following amine will give the carbylamine test ?
Paper chromatography is an example of :
Identify the correct statement from the following :
Measuring Zeta potential is useful in determiningwhich property of colloidal solution ?
A, B and C are three biomolecules. The results of the tests performed on them are given below :
Molisch's lest Barfoed Test Biuret Test
A Positive Negative Negativde
B Positive Positive Negative
C Negative Negative Positive
A, B and C are respectively :
In which of the following molecule, the bond angle is 107°48'?
The number of bond pairs and lone pairs of electrons in H2O molecule are
The distance between two adjacent layers in Graphite
Which of the following metals liberates hydrogen gas when reacted with dil. HCl?
1 nanometer is equal to