List of top Chemistry Questions

The Radial Probability curve for 2s orbital.
Photochemical smog pollutants cannot be reduced by?
What are the conditions to form an ionic bond?

Dehydrogenation, dehydrohalogenation

Which catalyst is used in hydrogenation of oils and fats?

Magnetic moment; of TI, V, Cr, Mn.

Conjugate base of H3P04

What is more basic in pyrol and pyridine?
XeF4 hydrolysis gives A + B, HF, and Oxygen. Find A and B 
IUPAC name of the compound C7H12O2?

Frenkel defect is also known as?

𝜆 given as 151 pm, find d?
Find acidic strength of Ortho Nitrophenol?
Hydrolysis of Al2C3, Be2? 
What is the electron count of OS6CO182-? 
What are the principles of green chemistry?

Match the terms in Column-I with their description in Column-II:

 Column-I Column-II (P) N2O5 (i) N–N bond (Q) N2O (ii) N–O–N bond (R) N2O4 (iii) N=N / NN bond (S) NO2 (iv) N=O bond 

Oxidation number of Mo in Ammonophosphomolybdate

Number of ambidentate ligands in given complex [M(en)(SCN)4] : 

Which of the following slows down the process of setting of the cement ? 

The value of log10K for a reaction A ⇋ B is (Given ΔHº298K = –54.67 kJmol–1 ΔSº298K = 10 kJmol–1 and R = 8.314 JK–1mol–1 2.303 × 8.314 × 298 = 5705) 

If the radius of ground state hydrogen is 51 pm, find out the radius of 5th orbit of Li2+ ions. (closest integer)

In a container at a constant temperature , arrange the RMS velocity of the following: Ne, Cl2 , UF6

Match the Column:
 Column I Column II
(A).ClO2-(1).Linear
(B).N3-(2).Tetrahedral
(C).NH4+(3).Bent
(D).SF4(4).See-Saw
The longest wavelength of light that can be used for the ionisation of lithium atom (Li) in its ground state is \(x × 10^{–8}\ m\). The value of \(x\) is ______. (Nearest Integer)
(Given : Energy of the electron in the first shell of the hydrogen atom is \(2.2 \times 10^{–18} J\);
\(h = 6.63 × 10^{–34}Js\) and \(c = 3 × 10^8 ms^{–1}\))