List of top Questions asked in MET- 2021

Number of $\pi$ electrons present in naphthalene is

Which isomeric form of benzene hexachloride is used as insecticide?

Which is the decreasing order of stability? (i) \(CH_3 - \overset{+}{C}H - CH_3\)
(ii) \(CH_3 - \overset{+}{C}H - O - CH_3\)
(iii) \(CH_3 \overset{+}{C}H - CO - CH_3\)

Successive alkanes differ by :

Sodium carbonate is manufactured by :

When sodium hydroxide reacts with sand, it forms :

Ice floats on water because:

Diborane on reaction with olefins forms :

Solution of 0.1 N \(NH_4OH\) and 0.1 N \(NH_4Cl\) has pH 9.25. Then p\(K_b\) of \(NH_4OH\) is :

Which of the following is not correct for \(D_2O\) ?

Whose name is not associated with the development of periodic table?

\( C(s) + O_2(g) \rightarrow CO_2(g) \quad \Delta H = -94 \, \text{kcal} \)
\( 2CO(g) + O_2(g) \rightarrow 2CO_2(g) \quad \Delta H = -135.2 \, \text{kcal} \)
The heat of formation of \( CO(g) \) is:

The low density of ice compared to water is due to :

Calculate the temperature at which \( \Delta G = -5.2 \, \text{kJ mol}^{-1} \), \( \Delta H = 145.6 \, \text{kJ mol}^{-1} \) and \( \Delta S = 216 \, \text{J K}^{-1} \text{mol}^{-1} \) for a chemical reaction:

Which of the following set of quantum numbers is not applicable for an electron in an atom?

For which of the following species Bohr’s theory is not applicable?

What is the wavelength associated with an electron moving with a velocity of \(10^6 \, \text{m/s}\)?
(\(h = 6.63 \times 10^{-34} \, \text{Js}\))

The order of increasing energies of the orbitals follows:

Which of the following is not possible ?

100 mL of 1.0 M HCl are mixed with 75 mL of 1.0 M \(Na_2CO_3\). The resulting solution will be:

In the reaction \( \text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3 \), ratio by volume of \( \text{N}_2, \text{H}_2 \) and \( \text{NH}_3 \) is \(1:3:2\). This illustrates law of:

A copper wire of diameter 1.6 mm carries a current I. The maximum magnetic field due to this wire is \(5 \times 10^{-4} \, T\). The value of I is :

Two wires PQ and QR carry equal currents I as shown in figure. One end of both the wires extends to infinity \(\angle PQR = \theta\). The magnitude of the magnetic field at O on the bisector of these two wires at a distance r from point Q is:

If \( \vec{A}, \vec{B} \text{ and } \vec{C} \) are the unit vectors along the incident ray, reflected ray and outward normal to the reflecting surface, then:

A charge of \(2 \times 10^{-2} \, C\) moves at 30 rev/s in a circle of diameter 80 cm. The current linked with the circuit is :