An \( 80 \, \Omega \) resistor is connected to a 240 V, 50 Hz AC supply. The net power consumed over a full cycle is:

A moving coil galvanometer has N number of turns in the coil with area A. It carries a current I and the magnetic field is B. The torque acting on the coil is :

What are the respective numbers of \( \alpha \) and \( \beta \) particles emitted respectively in the following radioactive decay?
\( {}^{200}_{90}X \rightarrow {}^{168}_{80}Y \)

The frequency of a photon whose energy is 66.3 eV would be (Given \(h = 6.63 \times 10^{-34} \text{ Js}\))

The energy of the electron in any given state for the hydrogen atom is \( -13.6/n^2 \, \text{eV} \). Identify the correct statements among the following.
(A) The negative sign in \( -13.6 \, \text{eV} \) signifies that the electron is bound to the nucleus.
(B) The negative sign in \( -13.6 \, \text{eV} \) signifies that the electron requires 13.6 eV energy to be separated from the nucleus.
(C) 3.4 eV energy is required to take the electron from the ground to the first excited state.
(D) To find the energy of the third excited state, the value of n is 4.
Choose the correct answer from the options given below:

C, Si and Ge have the same lattice structure but C is an insulator while Si and Ge are intrinsic semiconductors because
(A) ionisation energy will be least for C, followed by Si and highest for Ge
(B) ionisation energy will be least for Ge, followed by Si and highest for C
(C) number of free electrons for conduction in Ge and Si are negligibly small but significant for C
(D) number of free electrons for conduction in Ge and Si are significant but negligibly small for C
Choose the correct answer from the options given below:

The far point of a myopic person is 80 cm. The power of corrective lens will be

BOD values of three water samples A, B and C were recorded as 20 mg/L, 10 mg/L and 50 mg/L. Which of the sample is/are the most polluted?

When phenol is treated with bromine water, the product formed is :

Which among the following is not a primary consumer?

A p-type semiconductor can be obtained by adding

Read the Passage carefully and answer the Questions
Kinetic studies not only help us to determine the rate of a chemical reaction but also describe the conditions by which the reaction rates can be altered. The factors such as concentration, temperature, pressure and catalyst affect the rate of a reaction.
The speed of a reaction or the rate of a reaction can be defined as the change in concentration of a reactant or product in unit time.
Rate \(=k[A]^{\text {a }}[B]^{\text {y }}\)
Here \(k\) is the rate constant
\(x+y\) gives the overall order of a reaction, whereas \(x\) and \(y\) repreeent the order with respect to the reactants \(A\) and \(B\), respectively.
Table: Initial rate of formation of NO 2

S No.	Initial [NO]/mol L-1	Initial [O2]/mol L-1	Initial rate of formation of NO2/mol L-1s-1
1.	0.30	0.3	0.096
2.	0.60	0.3	0.384
3.	0.30	0.6	0.192
4.	0.60	0.6	0.768

In DNA N-glycosidic linkage is present between