List of top Chemistry Questions

Which of the following will show geometrical isomerism?

What would be the products obtained when a mixture of p-Methoxy benzaldehyde and Methanal are heated with 50% concentrated Caustic soda solution?

Match the Coordination compounds given in Column I with their characteristic features listed in Column II.

The group number of the element in the periodic table with the electronic configuration $(n - 1)d^2 ns^2$. For $n = 4$ is:

Choose the incorrect statement.

Which one of the following will give a positive result when it is warmed with Chloroform and alcoholic solution of KOH?

Identify the final product formed during the course of the given reactions.
% Reaction given Pentan-2-one $\xrightarrow{\text{NaCN/HCl}} [X] \xrightarrow{\Delta, 95% H_2SO_4} [Y]$

Match the items in Column I with their description in Column II:

A proton having mass equal to $1.66 \times 10^{-27}$ kg is accelerated to one tenth of the velocity of light. If its velocity can be measured to an accuracy of $\pm 2%$, what would be the uncertainty in its position?

Identify the reagents X, Y and Z used to bring out the following reactions.

Para and ortho hydrogen differ in:

The conversion of Propyne to Benzene can be brought out in 4 steps.
Choose the reagents to be used, in the proper sequential order, to bring out the conversion.

If electrolysis of water is carried out for a time duration of 2 hours, how much electric current in amperes would be required to liberate 100 ml of O$_2$ gas measured under standard conditions of temperature and pressure?

From among the following, identify the compound which forms two moles of a ketone on ozonolysis.

For a reaction of the type, $ 2X + Y \rightarrow A + B $, the following is the data collected:

Select the strongest base from the given compounds:

In neutral medium KMnO$_4$ oxidises MnSO$_4$ to __________

Match the following characteristics of transition metals given in Column I with the examples listed in Column II:

Which one of the following compounds would not undergo Aldol condensation?

Gaseous Nitrous oxide decomposes at 298 K to form Nitrogen gas and Oxygen gas. The $\Delta H \text{ for the reaction at 1.0 atm pressure and 298 K is } $-163.15 $\text{ kJ}$. Calculate Internal energy change for the decomposition of 100 g of Nitrous oxide gas under the same conditions of temperature and pressure.

A first order reaction proceeds to 90% completion. What will be the approximate time taken for 90% completion in relation to $t_{1/2}$ of the reaction?

Identify the starting compound from the following data: \[ C_6H_{14}O(X) \text{ on reaction with HI yields a haloalkane (A) and an alcohol (B).} \] Compound (A) on reaction with aqueous NaOH gives an alcohol (C). Compounds (B) and (C) on reaction with CrO$_3$ in anhydrous medium yields Butanone and Ethanal respectively.

5.8 g of a gas maintained at 95$^\circ C$ occupies the same volume as 0.368 g of hydrogen gas maintained at a temperature of 17$^\circ C$ and pressure being the same atmospheric pressure for both the gases. What is the molecular mass of the unknown gas?

The total number of sp2 hybridised carbon atoms in the major product P (a non-heterocyclic compound) of the following reaction is ___.

Match the reactions (in the given stoichiometry of the reactants) in List-I with one of their products given in List-II and choose the correct option.

	List-I		List-II
(P)	P₂O₃ + 3H₂O →	(1)	P(O)(OCH₃)Cl₂
(Q)	P₄ + 3NaOH + 3H₂O →	(2)	H₃PO₃
(R)	PCl₅ + CH₃COOH →	(3)	PH₃
(S)	H₃PO₂ + 2H₂O + 4AgNO₃ →	(4)	POCl₃
		(5)	H₃PO₄