List of top Questions asked in MHT CET

For a reaction \(\Delta H = -30\ \text{kJ}\) and \(\Delta S = -45\ \text{J K}^{-1}\), at what temperature does the reaction change from spontaneous to non-spontaneous?

Average bond enthalpy of water is \(464.5\ \text{kJ mol}^{-1}\). If the energy required to break the first O–H bond is \(502\ \text{kJ mol}^{-1}\), how much energy per mole is required to break the second O–H bond?

Which of the following compounds is obtained by dry distillation of calcium propionate?

Which of the following processes for refining of metals involves the principle of selective adsorption of the components from a mixture?

Which among the following processes occurs at 1500 K in a blast furnace for extraction of iron?

Which of the following types of valences, according to Werner’s theory, is also called primary valence?

Which of the following acids does NOT undergo Hell–Volhard–Zelinsky reaction?

Which of the following is obtained by hydrogenation of benzoyl chloride in presence of Pd on BaSO\(_4\)?

The IUPAC name of \(\text{CH}_3-\text{CH}_2-\text{O}-\text{CH}_2-\text{CH}(\text{CH}_3)_2\) is

Which among the following is a correct formula of pentaammine aqua cobalt(III) iodide?

Which of the following oxyacid of chlorine has highest thermal stability?

Which among the following decreasing order of boiling points is correct for amines?

The rate law for the reaction \(2\text{NO}(g) + \text{O_2(g) \rightarrow 2\text{NO}_2(g)\) is} \[ \text{rate} = k[\text{NO}]^2[\text{O}_2] \] Then which among the following statements is correct?

If \(Q\) is the magnitude of charge and \(r\) is the distance between the centres of positive and negative charges, then dipole moment (\(\mu\)) is given by

Which of the following properties of hydrogen is similar to the halogen family?

How many methyl groups are present in n-hexadecyl trimethyl ammonium chloride?

Which element from the following forms colourless compounds in +2 oxidation state?

The refractive index of glass is \( \frac{3}{2} \) and that of water is \( \frac{4}{3} \). The critical angle for a ray of light going from glass to water is

Identify the product X obtained in the following reaction:
\[ \text{CH}_3\!-\!(\text{CH}_2)_4\!-\!\text{CH}_3 \;\xrightarrow[\;773\,\text{K},\,10\text{–}20\,\text{atm}\;]{\text{Cr}_2\text{O}_3}\; X \]

Two bodies have their moments of inertia \(I\) and \(2I\) respectively about their axes of rotation. If their kinetic energies of rotation are equal, their angular momenta will be in the ratio

A galvanometer of resistance \(100\,\Omega\) requires \(10\,\mu\text{A}\) current for full scale deflection. Now a resistance of \(1\,\Omega\) is connected to convert it into an ammeter. The minimum current required to obtain full scale deflection is

A particle performing U.C.M. of radius \( \dfrac{\pi}{2}\,\text{m} \) makes \(x\) revolutions in time \(t\). Its tangential velocity is

A ring and a disc have same mass and same radius. The ratio of moment of inertia of a ring about a tangent in its plane to that of the disc about its diameter is

A bar magnet of magnetic moment \(5\,\text{A m}^2\) is placed in a uniform magnetic induction \(3\times10^{-5}\,\text{T}\). If each pole of the magnet experiences a force of \(2.5\times10^{-4}\,\text{N}\), then the magnetic length of the magnet is

Water rises to a height of \(15\,\text{mm}\) in a capillary tube having cross-sectional area \(A\). If the cross-sectional area of the tube is made \( \dfrac{A}{3} \), then the water will rise to a height