List of top Questions asked in MHT CET- 2021

If $A = \begin{bmatrix} 5a & -b \\ 3 & 2 \end{bmatrix}$ and $A \cdot \text{adj } A = A \cdot A^T$, then $5a + b =$
Let $$f(x) = \begin{array}{cc} x + a\sqrt{2}\sin x & , 0 \le x \lt \frac{\pi}{4} \\ 2x\cot x + b & , \frac{\pi}{4} \le x \lt \frac{\pi}{2} \\ a\cos 2x - b\sin x & , \frac{\pi}{2} \le x \le \pi \end{array}$$ If $f(x)$ is continuous for $0 \le x \le \pi$, then
Identify the homoleptic complex from the following.
Identify the molecule having a non-zero dipole moment.
What is the energy of an electron in stationary state corresponding to n = 2?
What is the difference between $\Delta H$ and $\Delta U$ for reaction given below at 298 K?
(R = 8.314 $\text{J}\ \text{K}^{-1}\ \text{mol}^{-1}$)
$2\text{C}_6\text{H}_{6(\ell)} + 15\text{O}_{2(g)} \rightarrow 12\text{CO}_{2(g)} + 6\text{H}_2\text{O}_{(\ell)}$
Which among following functional groups exhibits $-\text{R}$ effect?
Which of the following alkenes on oxidation by $\text{KMnO}_4$ in dil. $\text{H}_2\text{SO}_4$ forms adipic acid?
Identify compound from following having highest basic strength.
Which among the following compounds has highest melting point?
Identify the polymer used in making floor tiles.
Which of the following formulae is used to obtain depression in freezing point?
Pure dihydrogen (99.5%) is obtained by the electrolysis of
For the reaction $\text{N}_{2(g)} + 3\text{H}_{2(g)} \rightarrow 2\text{NH}_{3(g)}$, what is the relation between $\frac{d[\text{N}_2]}{dt}$ and $\frac{d[\text{H}_2]}{dt}$?
How many tetrahedral voids are present in 0.4 mole of a compound that forms hcp structure?
What is enthalpy of formation of $\text{NH}_3$ if bond enthalpies are as $(\text{N}\equiv\text{N}) = 941\ \text{kJ}$, $(\text{H}-\text{H}) = 436\ \text{kJ}$, $(\text{N}-\text{H}) = 389\ \text{kJ}$?
Which of the following alkyl halide is treated with sodium metal to obtain 2,2,3,3-tetramethyl butane?
Electrical conductance due to all the ions in $1\ \text{cm}^3$ of given solution is called as
Identify the correct decreasing order of precipitation power of flocculating ion added, from following.
Which of the following is likely to undergo racemization during alkaline hydrolysis?
Identify the product 'B' in following reaction:
$2\text{CH}_3\text{CHO} \xrightarrow{\text{dil. NaOH}} \text{A} \xrightarrow[-\text{H}_2\text{O}]{\Delta} \text{B}$
Identify use of argon from following.
Which of the following is an example of copolymer?
What is Henry's law constant if solubility of a gas in water at 298 K and 1 bar pressure is $7 \times 10^{-4}\ \text{mol}\ \text{L}^{-1}$?
What is the conductivity of 0.02 M KCl solution if cell constant is $1.29\ \text{cm}^{-1}$ with resistance 645 $\Omega$?