List of top Chemistry Questions

In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion $(Ca^{2+})$ and fluoride ion $(F^-)$ are

According to the $ IUPAC $ nomenclature, the correct increasing order of priorities for the below mentioned functional groups in polyfunctional organic molecules is (A) $ -OH $ (B)$ >\,C = O $ (C) $ -NH_{2} $ (D) $ -CHO $

The $ EMF $ of a galvanic cell by coupling two electrodes $ M_{1} \left|M_{1}^{2+}\left(0.1 \, M\right)\right|\left|M_{2}^{2+}\left(0.01\,M\right)\right|M_{2} $ is $ +1.47\,V $ . If the $ E^{\circ} $ value (reduction potential) of $ M_{2} $ electrode is $ 0.9\, V, E^{\circ} $ (reduction potential) value of $ M_{1} $ electrode in volts would be $ \left[Assume \frac{2.303RT\left(T=298\,k\right)}{F}=0.06\right] $

The electronic configurations of Eu (Atomic No. 63), Gd(Atomic No. 64) and Tb (Atomic No. 65) are:

Consider the following liquid-vapour equilibrium ${Liquid <=> Vapour }$ Which of the following relations is correct ?

Consider the reaction ${ CH3CH2CH2Br + NaCN -> CH3CH2CH2CN + NaBr } $ This reaction will be the fastest in

Hot concentrated sulphuric acid is a moderately strong oxidizing agent. Which of the following reaction does not show oxidizing behaviour?

Amongst the following compounds, the one which would not form a white precipitate with ammonical silver nitrate solution is

Pressure (P) vs. density (D) curve for an ideal gas at two different temperatures $T_{1} andT_{2}$ is shown below. Identify the correct statement about $T_{1}and T_{2}$:

Consider the following reaction: $6NaOH +3cl_{2} \to5Nacl +A+3H_{2}O$ What is the oxidation number of chlorine in A?

Assign the Bravais lattice type of the following unit cell structure.

Among the following groupings, which one represents the set of iso-electronic species?

Which one of the following does not produce $O_{2}$ as the only gaseous product on heating?

Which property that polyacetylene exhibits is unusual for an organic polymer?

Which structure for $XeO_{3} \, and XeF_{4}$ are consistent with the VSEPR model?

The correct IUPAC name of $H_{3}C-C\left(CH_{3}\right)_{2} -CH =CH_{2}$ is

IUPAC name of valeric acid is

Anisole is treated with HI under two different conditions. $\ce{ C + D [conc.HI] A + B }$ The nature of A to D will be

An ionic compound has a unit cell consisting of A ions at the corners of a cube and B ions on the centres of the faces of the cube. The empirical formula for this compound would be

Esterification of acid chloride with ethanol is usually carried out in the presence of pyridine. The function of pyridine is

At $100^{\circ} C$ the vapour pressure of a solution of $6.5 \,g$ of a solute in $100 \,g$ water is $732\, mm$. If $K_b = 0.52$, the boiling point of this solution will be:

Which one of the following reactions of xenon compounds is not feasible?

Which of the two acids form anhydrides? (I) Oxalic acid (II) Succinic acid (III) Benzoic acid (IV) Phthalic acid

In a protein molecule various amino acids are linked together by: