List of practice Questions

When primary amine is heated with $CS_2$ in the it gives isothiocyanate. This reaction is called
When $MnO_2$ is fused with $KOH$ and $O_2$, what is the product formed and its colour? $MnO_2 + KOH + O_2 \to ? + H_2O$
When molten zinc is converted into solid state, it acquires HCP structure. The number of nearest neighbours will be
When nitric acid is heated with $P_2O_5$, the oxide nitrogen that is produced is
When ordinary light is made incident on a quarter wave plate, the emergent light is
When light travels from air to glass, the property which does not change is
When methanol is sprinkled over hot copper plate the smell would be
When methyl isocyanide is heated with sulphur the product formed is
When $KMnO_4$ is added to oxalic acid, the decolourisation is slow in the beginning but becomes instantaneous after sometime because
When excess of carbon dioxide is passed through lime water, the milkiness first formed disappears due to
When forces $F_1,F_2,F_3$ are acting on a particle of mass m such that $F_2$ and $ F_3 $ are mutually perpendicular, then the particle remains stationary, If the force $F_1$ is now removed Then acceleration of the particle is.
When gels are allowed to stand, they give out small quantity of liquid (or water). This process is called
When $H_2S$ is passed through nitric acid, the productis
When ethyl alcohol is heated with conc. $H_2SO_4$ at $443\,K$ ethylene is formed by
When ethyl chloride is heated with excess of concentrated ammonia, the major product formed is
When ethyl hydrogen sulphate is heated with excess of alcohol at 410 K, the product obtained is
When ethyl nitrile is subjected to reduction with Sn/HCl, the pair of compounds formed are
When diethyl ether is heated with dil. $H_2SO_4$ under it gives
When dispersed phase is liquid and dispersion medium is gas then the colloidal system is called
When $C_2H_5OH$ is treated with acidified $k_2Cr_2O_7$ to forms $CH_3CHO$. It is an example of
When $ {CH_3CH_2Br}$ reacts with sodium acetylide, the main product is
When chloroform is exposed to light and air, it forms
When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains
When benzediazonium chloride in hydrochloric acid reacts with cuprous chloride, then chlorobenzene is formed. The reaction is called
When beryllium is bombarded with alpha particles (Chadwick?? experiment) extremely penetrating radiations, which cannot be deflected by electrical or magnetic field are given out. These are :