List of top Chemistry Questions

Methoxy methane and ethanol are
$50 \, mL $ of $H_2O$ is added to $50 \, mL$ of $1 \times 10^{-3}\, M$ barium hydroxide solution. What is the pH of the resulting solution?
Which one of the following aqueous solutions will exhibit highest boiling point?
Which of the following statements are correct for alkali metal compounds? (i) Superoxides are paramagnetic in nature. (ii) The basic strengths of hydroxides increases down the group. (iii) The conductivity of chlorides in their aqueous solutions decreases down the group. (iv) The basic nature of carbonates in aqueous solutions is due to cationic hydrolysis.
The velocities of two particles $A$ and $B$ are $0.05$ and $0.02\, ms^{-1}$ respectively. The mass of $B$ is five times the mass of $A$. The ratio of their de- Broglie's wavelength is
Identify $A$ and $B$ in the following reaction $CH _{3}- CH _{3} \stackrel{B}{\leftarrow}{B} CH _{3} COOH \xrightarrow{A} CH _{3} CH _{2} OH$
What is the temperature at which the kinetic energy of $0.3$ moles of helium is equal to the kinetic energy of $0.4$ moles of argon -at $400\, K$ ?
The correct stability order for the following species is
Number of monochloro derivatives obtained when neo-pentane is chlorinated, is
Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements gives the correct picture ?
When oxyhaemoglobin changes to de-oxyhaenioglobin, $Fe^{2+}$ ion changes from
The order of electron affinity of halogens is
Electrolysis of dilute aqueous $NaCl$ solution was carried out by passing $10\, mA$ current. The time required to liberate $0.01\, mole$ of $H_2$ gas at the cathode is $(1 \,F\,= 96500 \,C \,mol^{-1})$
The correct statement(s) about the compound given below is/are
What is the equilibrium expression for the reaction, $ {{P}_{4}}(s)+5{{O}_{2}}(g) \rightleftharpoons {{P}_{4}}{{O}_{10}}(s)? $
The enthalpies of combustion of carbon and carbon monoxide are $ -393.5 $ and $ -283\,\text{kJ}\,\text{mo}{{\text{l}}^{-1}} $ respectively. The enthalpy of formation of carbon monoxide per mol is
The volumes of two $ \text{HCl} $ solutions A(0.5 N) and B(0.1 N) to be mixed for preparing 2 L of 0.2 N HCl solution are
When 0.1 mole of an acid is added to 2 L of a buffer solution, the pH of the buffer decreases by 0.5. The buffer capacity of the solution is
Which one of the following reactions is an example of auto-catalysis?
AB is an ionic solid. If the ratio of ionic radii of $ {{\text{A}}^{\text{+}}} $ and $ {{\text{B}}^{-}} $ is 0.52, what is the coordination number of $ {{\text{B}}^{-}} $ ?
Which one of the following reactions occur at the cathode?
Unusual high boiling point of water is result of
The electronic configuration $1 s^{2},\, 2 s^{2} 2 p^{6},\, 3 s^{2} 3 p^{6} 3 d^{9}$ represents a
For the reaction : $ \ce{H_2 +I_2 -> 2HI} $ , the differential rate law is
Benzoylation of phenol in alkaline medium is known as