List of top Chemistry Questions asked in MHT CET

The enthalpy and entropy change for the reaction:${\mathrm{Br}}_2(l)+{\mathrm{Cl}}_2(\mathrm{g})\to 2\mathrm{BrCl}(\mathrm{g})$ are $30\mathrm{kJ}{\mathrm{mol}}^{-1}$ and $105{\mathrm{JK}}^{-1}{\mathrm{mol}}^{-1}$ respectively.The temperature at which the reaction will be in equilibrium is:

A current of $2$ amp when passed for $5$ hours through a molten salt deposits $22.2\mathrm{g}$ of metal of atomic mass $177$. The oxidation state of the metal in the metal salt is:

Which of the following carboxylic acid is highly insoluble in water?

In nitroprusside ion, the iron and NO exist as Fe(II) and $N{O}^{+}$ rather than Fe(III) and NO. These forms can be distinguished by:

The number of moles of electrons passed when a current of $2A$ is passed through a solution of electrolyte for $20$ minutes is:

What is the name of the above reaction?

When you heat a sample of gas, what happens to the particles that make up the gas?

In ___________, a reaction product is itself a catalyst for that reaction leading to positive feedback.

Hybridization of $\mathrm{Fe}$ in ${\mathrm{K}}_3[\mathrm{Fe}(\mathrm{CN}{)}_6]$ is:

Which of the following is Baeyer’sreagent?

Heavy water is _________. 

$12g$ of urea is present in 1 litre of solution and $68.4g$ of sucrose is separately dissolved in 1 litre of another sample of solution. The lowering of vapour pressure of first solution is:

The number of electrons, protons and neutrons in a species are equal to $18$, $16$ and $16$ respectively. Assign the proper symbol to the species.

Which of the following given elements is the least reactive among all other elements? 

Sustainable development focuses on more use of ___________.

A catalyst is added to a reaction to increase the rate of reaction. Which of the following statements is correct?

Which of the following compounds give(s) positive test with Tollens' reagent?A. Carboxylic acidB. AlcoholC. Alpha hydroxy ketonesD. Aldehydes

Identify the element with the atomic number 10.

First organic compound to be synthesised was_______.

A high molecular weight compound formed by combining large numbers of small molecules of low molecular weight is called:

Plastic used to preserve yogurts is replaced with a polymer called polylactic acid is an example of ____________.

If a $Z{n}^{2+}/Zn$ electrode is diluted $100$ times, then the emf will show: 

Two different first order reactions have rate constants ${\mathrm{k}}_1$ and ${\mathrm{k}}_2$ at ${\mathrm{T}}_1({\mathrm{k}}_1>{\mathrm{k}}_2)$. If temperature is increased from ${\mathrm{T}}_1$ to ${\mathrm{T}}_2$, then new constants become ${\mathrm{k}}_3$ and ${\mathrm{k}}_4$ respectively. Which among the following relations is correct?

The increasing order of basicity of the following compounds is:

Molecules: General formula. (n represents the number of carbon atoms in chain)1. Aldehydes: $C_n{H}_{2n}O$2. Carboxylic acids: $C_n{H}_{2n}{O}_2$3. Cycloalkanes: $C_n{H}_{2n}$4. Alkanes: $C_n{H}_{2n+2}$Which of the above matching is correct? Choose from the options given below: