List of top Chemistry Questions

What is the oxidation state of $P$ in $ Ba(H_2PO_2)_2 $?
Which of the following acts as an oxidising as well as reducing agent?
Maximum entropy will be in which of the following?
What is obtained when chlorine is passed in boiling toluene and product is hydrolysed?
Sodium phenoxide reacts with $ C{{O}_{2}} $ at $400 \,K$ and $4-7$ atm pressure to give
Saturated solution of $ KN{{O}_{3}} $ is used to make salt bridge because
On passing $3A$ of electricity for $50$ min $1.8\, g$ metal deposits. The equivalent mass of metal is
Which of the following is used widely in the manufacture of lead storage battery?
The general formula $ {{C}_{n}}{{H}_{2n}}{{O}_{2}} $ could be for open chain
Decomposition of hydrogen peroxide can be prevented by adding
Which of the following is an intensive property ?
The enthalpies of combustion of carbon and carbon monoxide are $ -393.5$ and $ -283\,kJ\, mol^{-1}$ respectively. The enthalpy of formation of carbon monoxide per mole is
Ammonia gas dissolves in water to form $ NH_{4}OH$ . In this reaction water acts as
During the evaporation of liquid
The structure of $PF_{5}$ molecule is
A solid is made of two elements $X$ and $Z$. The atoms $Z$ are in $CCP$ arrangement while the atoms $X$ occupy all the tetrahedral sites. What is the formula of the compound?
The discovery of which of the following group of elements gave death blow to the Newland's law of octaves?
Which of the following statements is correct? Dielectric constant of $ {{H}_{2}}{{O}_{2}} $
For the square planar complex $[M(a)(b)(c)(d)]$ (where, $M =$ central metal and $a, b, c$ and $d$ are monodentate ligands), the number of possible geometrical isomers are
The electronic configuration of a dipositive ion $ {{M}^{2+}} $ is $2, 8, 14$ and its mass number is $56$. The number of neutrons present is
The heat of formation of $ C{{O}_{2}} $ is $ -95\text{ }kcal $ . The amount of carbon which on burning will evolve 1000 kcal is
Which statement best explains why A is more acidic than B?
Choose the reagent to carry out the reaction. $ C{{H}_{3}}C\equiv CC{{H}_{3}}\xrightarrow[{}]{{}}\underset{cis\text{ }form}{\mathop{C{{H}_{3}}CH=CHC{{H}_{3}}}}\, $
Which of the following would not form upon electrolysis of aqueous solution of potassium propanoate?
Which of the following compounds can exist in enantiomeric (i.e., D and L) forms?