List of top Chemistry Questions

Choose the amide which on reduction with $ LiAl{{H}_{4}} $ yields a secondary amine
Chlorobenzene on treatment with sodium in dry ether gives diphenyl. The name of the reaction is
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}} $
In the Hofmann rearrangement of primary amides having optically active group with S-configuration, the product amine has
An element 'X' belongs to fourth period and fifteenth group of the Periodic Table. Which one of the following is true ?
At $ 500 \,K $ , the half-life period of a gaseous reaction at an initial pressure of $ 80\, kPa $ is $ 350 \,s $ . When the pressure is $ 40 \,kPa $ , the half-life period is $ 175 \,s $ . The order of the reaction is
The $\alpha$- and $\beta$- forms of glucose are
Air at sea level is dense. This is a practical implimentation of:
A compound ?A?with molecular formula CHO gives a positive 2, 4 DNP test but a negative Tollen?s test. On treatment with sodium hypochlorite, it gives CHCl and compound ?B?. Compound ?B? is
The molality of the $3\,M$ solution of methanol if the density of the solution is $0.9\, g\, cm^{-3}$ is
The dispersed phase and dispersion medium in soap lather are respectively
In which one of the following, d-d transition involves absorption in the ultraviolet region
Carbohydrates are stored in human body as the polysaccharide
The monomers used for their preparation of nylon-$2$-nylon-$6$ is/are
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
Germanium of very high purity is obtained by
Among the transition metals of 3d series, the one that has the highest negative $M^{2+} /M$ standard electrode potential is
Among the following elements, which one exhibits both positive and negative oxidation states?
$0.02$ 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
Portland cement does not contain
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
Read the statements regarding muscle proteins. i. Actin is a thin filament and is made up of two $F$-actins, ii. The complex protein, tropomyosin is distributed at regular intervals on the troponin iii. Myosin is a thick filament which is also a polymerized protein iv. The globular head of meromyosin consists of light meromyosin $(LMM)$
Which one of the following is not a sulphide ore?
The element with atomic number 117 has not been discovered yet. In which family would you place this element if discovered?