List of practice Questions

Chlorobenzene on treatment with sodium in dry ether gives diphenyl. The name of the reaction is
Choose the amide which on reduction with $ LiAl{{H}_{4}} $ yields a secondary amine
Identify the product/s in the following reaction. $ 3C{{H}_{3}}CH=C{{H}_{2}}\xrightarrow[{}]{B{{H}_{3}}}X\xrightarrow[{}]{{{H}_{2}}{{O}_{2}}/O{{H}^{-}}} $ $ product/s+{{H}_{3}}B{{O}_{3}} $
If the kinetic energy of the particle is increased to $16$ times its previous value, the percentage change in the de Broglie wavelength of the particle is
In the Hofmann rearrangement of primary amides having optically active group with S-configuration, the product amine has
Sodium peroxide which is a yellow solid, when exposed to air becomes white due to the formation of
The $\alpha$- and $\beta$- forms of glucose are
The boiling point of para nitrophenol is greater than ortho nitrophenol, because:
The correct increasing order of the acid strength of benzoic acid $(I), 4$ -nitrobenzoic acid $(II), 3,4$ -dinitrobenzoic acid(III) and $4$-methoxybenzoic acid $(IV)$ is
The order of reaction is decided by
The partial pressure of oxygen in the alveolar air is:
Among the following elements, which one exhibits both positive and negative oxidation states?
Among the transition metals of 3d series, the one that has the highest negative $M^{2+} /M$ standard electrode potential is
An inorganic salt $(A)$ is decomposed on heating to give two products $(B)$ and $(C)$. Compound $(C)$ is a liquid at room temperature and is neutral to litmus while the compound $(B)$ is a colourless neutral gas. Compounds $(A)$, $(B)$ and $(C)$ are
Carbohydrates are stored in human body as the polysaccharide
Germanium of very high purity is obtained by
In which one of the following, d-d transition involves absorption in the ultraviolet region
The amount of solute (molar mass $ 60\text{ }g\text{ }mo{{l}^{-1}} $ ) that must be added to $180\, g$ of water so that the vapour pressure of water is lowered by $10\%$, is
The dispersed phase and dispersion medium in soap lather are respectively
The molality of the $3\,M$ solution of methanol if the density of the solution is $0.9\, g\, cm^{-3}$ is
The monomers used for their preparation of nylon-$2$-nylon-$6$ is/are
$0.02$ mole of $[Co(NH_{3})_{5}Br]Cl_{2}$ and $0.02$ mole of $[Co(NH_{3})_{5}Cl]SO_{4}$ are present in $200\, cc$ of a solution $X$. The number of moles of the precipitates $Y$ and $Z$ that are formed when the solution $X$ is treated with excess silver nitrate and excess barium chloride are respectively
Sulfonation of benzene with excess sulfuric acid provides
20.0 kg of H\(_2\)(g) and 30 kg of H\(_2\)(g) are reacted to produce NH3(g). The amount of NH3(g). formed is
A body of mass $60 \,kg$ suspended by means of three strings $P, Q$ and $R$ as shown in the figure is in equilibrium. The tension in the string $P$ is