List of top Chemistry Questions

Which of the following is urotropine?
Which of the following does not give yellow ppt.with $I_2/NaOH$ ?
Which of the following contains cobalt?
Which of the following compounds is known as white vitriol?
Thermite is a mixture of
The strongest bronsted base among the following anions is
The reaction of Ethanol with $H_2SO_4$ does not give
The $pH$ value of human blood is about
The pH of $0.001( N )$ acetic acid solution, which is $10 \%$ dissociated. is
The number of molecules in $4.25\, g$ of ammonia is approximately
The hydrogen atom can give spectral lines in the Lyman, Balmer Paschen series. Which of the following statement is correct?
The hybrid state of positively charged carbon in vinyl carbocation is $ (C{{H}_{2}}=C{{H}^{+}}--) $ :
$ N _{2}+3 H _{2} \rightleftharpoons 2 NH _{3} $ The equilibrium constant for the reaction is $K$, then the equilibrium constant or the equilibrium for the reaction given beloow is: $ NH _{3} \rightleftharpoons \frac{1}{2} N _{2}+\frac{3}{2} H _{2} $
Sodium phenoxide reacts with $CO_2$ at 400 K and 4.7 atm pressure to give
Riboflavin is:
In the reaction sequence: $ {CaC2 ->[H_2O] A}$$ { ->[{\text{dil}} HgSO_4][HgSO_4] }$$ {B ->[H_2/Ni] C}$, the term ????is
In the reaction: $2P_{2}O_{5}+2HNO_{3}\to P_{4}O_{10}+x,$ the term $x$ is
If active mass of a $6\%$ solution of a compound is $2$, its molecular weight will be
Hydrolysis of beryllium carbide produces
Gun metal is an alloy of copper and tin with:
Bismuth chloride $(BiCl_3)$, on hydrolysis, yields a white precipitate of
Nitrogen is unreactive at room temperature but becomes reactive at elevated temperatures (on heating) or in the presence of catalysts. In nitrogen molecules, there is extensive delocalization of electrons.
In crystal lattice, size of the cation is larger in a tetrahedral hole than in an octahedral hole. The cations occupy more space than anions in crystal packing.
Electrons are ejected from a certain metal when either blue or violet light strikes the metal surface. However, only violet light causes electron ejection from a second metal. The electrons in the first metal require less energy for ejection.
A special line will be seen for a $2p_x \to 2p_y$ transition. Energy is released in the form of waves of light when the electron drops from $2p_x$ to $2p_y$ orbital.