List of top Chemistry Questions

Which of the following graph represents variation of 2p-orbital wave function with distance from the nucleus?

\( \text{XeF}_4 \) disproportionate in water to give

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

The correct set of quantum numbers for Rb (atomic no. 37) is

Name the catalyst used to bring down the reaction

Coordination number of Co in \( [Co(NH_3)_6]Cl_3 \) is

Which of the following complex will show fac & mer isomerism?

The product \( P \) for the above given reaction will be

IUPAC name of valeric acid is

Which of the following compound has all the four types $\left(1^{\circ}, 2^{\circ}, 3^{\circ}\right.$ and $\left.4^{\circ}\right)$ of carbon atoms?

Which of the following has two stereoisomers?

The atom of largest size among the following is

$CH _{3} C \equiv CCH _{3} \xrightarrow{H 2 / P t} A \xrightarrow{D_{2} / P t} B$ The compounds $A$ and $B$, respectively are

Give the possible structure of $X$ in the following reaction : $C_6 H_6 + D_2 SO_4 \xrightarrow{D_2O} X$

The normality of $26\%$ (wt/vol) solution of ammonia (density $= 0.855$ ) is approximately :

At what temperature, the rate of effusion of $N_2$ would be $1.625$ times than that of $SO_2$ at $50^{\circ} C$ ?

$1.25\, g$ of a sample of $Na _{2} CO _{3}$ and $Na _{2} SO _{4}$ is dissolved in $250\, ml$ solution. $25 ml$ of this solution neutralises $20\, ml$ of $0.1\, N\, H _{2} SO _{4}$. The $\%$ of $Na _{2} CO _{3}$ in this sample is

Formation of polyethylene from calcium carbide takes place as follows $ CaC _{2}+2 H _{2} O \longrightarrow Ca ( OH )_{2}+ C _{2} H _{2}$ $C _{2} H _{2}+ H _{2} \longrightarrow C _{2} H _{4} $ $ nC _{2} H _{4} \longrightarrow\left(- CH _{2}- CH _{2}-\right) n$ The amount of polyethylene obtained from $64.1\, kg$ of $CaC _{2}$ is

A compound of Xe and F is found to have 53.5% of Xe. What is oxidation number of Xe in this compound ?

The hypothetical complex chloropentaamminecobalt (III) chloride can be represented as

Nucleotides are joined together by between $ 5' $ and $ 3' $ carbon atoms of pentose sugar

The degree of dissociation of $P C l_{5}(\alpha)$ obeying the equilibrium $PCl _{5} \rightleftharpoons PCl _{3}+ Cl _{2}$ is related to the equilibrium pressure by