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Which of the following compounds has the lowest melting point?
The state of hybridisation of carbons marked 2, 3, 5 and 6 in the following hydrocarbon are, respectively: $\overset{6}{\text{CH}_3}-\overset{5}{\text{CH}}=\overset{4}{\text{CH}}-\overset{3}{\text{CH}_2}-\overset{2}{\text{C}}\equiv\overset{1}{\text{CH}}$
The tendency of $\text{BF}_3$, $\text{BCl}_3$, and $\text{BBr}_3$ to behave as Lewis acid decreases in the sequence:
The hybridisations of atomic orbitals of nitrogen in NO$^+$, NO$_3^-$ and NH$_3$ respectively are:
Which of the following species has a bond angle of 120$$^\circ$$?
In which of the following molecules, all atoms are coplanar?
Which of the statements given below is not true about formation of Annual Rings in trees?
The complex that is used as an anticancer agent is:
The shape of $Fe(CO)_5$ is:
The correct order of energies of molecular orbitals of N$$_2$$ molecule is:
Which one of the following statements is correct?
The quantities of heat required to raise the temperature of two solid copper spheres of radii $r_1$ and $r_2$ ($r_1 = 1.5 r_2$) through 1 K are in the ratio :
Internal energy is an example of:
Which pair of the following compounds has one lone pair of electrons on the central atom?
The complex, $[\text{Pt}(\text{Py})(\text{NH}_3)\text{BrCl}]$ will have how many geometrical isomers?
The complexes $[\text{Co}(\text{NH}_3)_6][\text{Cr}(\text{CN})_6]$ and $[\text{Cr}(\text{NH}_3)_6][\text{Co}(\text{CN})_6]$ are examples of:
A complex compound is formed by ligands nitrate and chloride. It gives two moles of AgCl precipitate with $AgNO_3$. What will its formula be?
Which of the following complexes exhibits the highest paramagnetic behaviour? where gly = glycine, en = ethylenediamine and bpy = bipyridyl moieties (At no: $\text{Ti} = 22$, $\text{V} = 23$, $\text{Fe} = 26$, $\text{Co} = 27$)
A solid sphere is in rolling motion. In rolling motion a body possesses translational kinetic energy ($K_t$) as well as rotational kinetic energy ($K_r$) simultaneously. The ratio $K_t : (K_t + K_r)$ for the sphere is
Artificial selection to obtain cows yielding higher milk output represents: