List of top Questions asked in MHT CET- 2021

Formation of $\text{NO}_{2(g)}$ from $\text{N}_{2(g)}$ and $\text{O}_{2(g)}$ is an endothermic process. Which of the following is true for this reaction?

Which among the following statements about $[\text{Ni}(\text{CN})_4]^{2-}$ is NOT true?

Solubility product of AgBr is $4.9 \times 10^{-13}$. What is its solubility?

How many moles of urea are present in 5.4 g ? (Molar mass = 60)

Conversion of benzene diazonium chloride to chlorobenzene in presence of CuCl / HCl is known as

Which among the following is a double ring containing nitrogen base present in nucleic acids?

Which among the following compounds is NOT a colourless gas?

Identify the product 'B' in the following series of reactions:
$\text{Propan-1-ol} \xrightarrow{623\ \text{K},\ \text{Al}_2\text{O}_3} \text{A} \xrightarrow[\text{ii) }\text{H}_2\text{O}]{\text{i) conc. }\text{H}_2\text{SO}_4} \text{B}$

The volume of a gas at $0^\circ \text{C}$ is $2\ \text{dm}^3$. What is its volume if temperature is decreased by $272^\circ \text{C}$?

The major product obtained in the following reaction is Chlorobenzene + chlorine $\xrightarrow{\text{Anhydrous }\text{FeCl}_3}$ product (Major)

Ethers when dissolved in cold concentrated sulphuric acid forms

A bar magnet has length 3 cm, cross-sectional area $2\ \text{cm}^2$ and magnetic moment $3\ \text{A m}^2$. The intensity of magnetisation of the bar magnet is

Two parallel plates with dielectric placed between the plates are as shown in figure. The resultant capacity of capacitor will be [$A = \text{area of plate}$, $t_1, t_2$ and $t_3$ are thickness of dielectric slabs, $k_1, k_2$ and $k_3$ are dielectric constants.]

The magnitude of flux linked with coil varies with time as $\phi = 3t^2 + 4t + 7$. The magnitude of induced e.m.f. at $t = 2\ \text{s}$ is

If we increase the frequency of an a.c. supply, then inductive reactance

In biprism experiment, the $4^{\text{th}}$ dark band is formed opposite to one of the slits. The wavelength of light used is [d = separation between slits, D = distance between slits and screen]

At what rate a single conductor should cut the magnetic flux so that current of $1.5\ \text{mA}$ flows through it when a resistance of $5\ \Omega$ is connected across its ends?

An electron of mass 'm' and a photon have same energy 'E'. The ratio of de-Broglie wavelength of electron to the wavelength of photon is (c = velocity of light)

An electron is projected along the axis of a circular conductor carrying current $I$. The electron will experience

A charged spherical conductor has radius $r$. The potential difference between its surface and a point at a distance of $3r$ from its centre is $V$. The electric field intensity at a distance of $3r$ from its centre is

A thin ring of radius $R$ meter has charge $q$ coulomb uniformly spread on it. The ring rotates about its axis with a constant frequency of $f\ \text{rev s}^{-1}$. The magnetic induction at the center of the ring is

The fundamental frequency of an air column in pipe 'A' closed at one end coincides with the second overtone of pipe 'B' open at both ends. The ratio of the length of pipe 'A' to that of pipe 'B' is

A particle executing S.H.M. starts from the mean position. Its amplitude is $A$ and time period is $T$. At what displacement is its speed one-fourth of the maximum speed?

The temperature of a black body is increased by 50%, then the percentage increase in the rate of radiation by the body is approximated as

For a perfectly black body, coefficient of emission is