List of top Chemistry Questions

What is ‘X’ in the following reaction?
Kmno4/koh
Identify the correct products, when ethanol reacts with PCl$_5$
Which of the following types of isomerism is exhibited by [Co(NH$_3$)$_5$(NO$_2$)] (NO$_3$)$_2$ i. Optical ii. Linkage iii. Ionization iv. Coordination
Arrange the hydrides NH$_3$, HF, H$_2$O, HCl in the increasing order of their boiling points
The configurations of the complexes of manganese A, B respectively are t$_{2g}^3$ e$_g^1$, t$_{2g}^4$ e$_g^0$. Then A, B are:
Match the following
ostwalds process
Zinc acetate – antimony trioxide catalyst is used in the preparation of which polymer?
In which of the following amino acids -OH group is present?
The process which involves the treatment of the ore with a suitable reagent so as to make it soluble but not impurities is called
At 293 K, the Henry law constant in water for N$_2$ and O$_2$ are 76.48 k bar and 34.86 k bar respectively. What is the ratio of mole fractions of N$_2$ and O$_2$ in water? (Assume partial pressures of N$_2$ and O$_2$ same at 293 K)
At 298 K, if the vapour pressure of pure liquids toluene, benzene, chloroform and dichloromethane are 60, 160, 200 and 415 torr respectively. Then which liquid is having high boiling point?
The minimum voltage (in V) required to bring about the electrolysis of 1M copper (II) sulphate solution at 298 K is (Given E$^\circ_{Cu^{2+}/Cu}$ = 0.34V and E$^\circ_{H_2O/H^+}$ = -1.23V)
Consider the following statements for a gold sol: I) It is macromolecular colloid II) It is a lyophobic sol III) It is a negatively charged sol IV) It is a multimolecular colloid V) It is an associated colloid The correct statements are:
The correct order of boiling points of following molecules is:
A reaction, 3X(g) $\rightarrow$ 2Y(g) + Z(g) takes place in a closed vessel. What is the rate of formation of Y (in mol L$^{-1}$ s$^{-1}$) if the rate of disappearance of X is 7.2 $\times$ 10$^{-3}$ mol L$^{-1}$ s$^{-1}$?
Which one of the following is a semiconductor?
Which of the following reactions is not correct?
Observe the following species: AlCl$_3$, NH$_3$, H$^+$, Co$^{3+}$, $^-$OH, Mg$^{2+}$, BF$_3$, Cl$^-$ How many Lewis acids are present in the above list?
Among the following, the incorrect statement is:
The compounds having coordinated water are:
I. CrCl$_3$.6H$_2$O
II. BaCl$_2$.2H$_2$O
III. CuSO$_4$.5H$_2$O
Match the following
graphite
The standard electrode potential (in V) values for Al$^{3+}$/Al, Tl$^{3+}$/Tl are respectively
Observe the following equilibrium $$\text{Fe}^{3+}(aq) + \text{SCN}^-(aq) \rightleftharpoons [\text{Fe(SCN)}]^{2+}(aq)$$ yellow \hspace{1cm colourless \hspace{1cm} deep red}
Addition of aqueous oxalic acid solution to the above equilibrium
The hybridization of central atom of ClF$_3$, NH$_3$, SO$_3$ are respectively
x g of methane was burnt completely in the presence of oxygen. The liberated gases were passed into a solution containing 370 g of Ca(OH)$_2$. The weight of white precipitate obtained was 500 g. What is the value of x (in g)? (Given : C = 12; H = 1; Ca = 40; O = 16 u)