NEET 2023 MANIPUR

The correct option in which the density of argon (Atomic mass = 40) is highest:

The above figure shows the circuit symbol of a transistor. Select the correct statements given below:

(A) The transistor has two segments of p-type semiconductor separated by a segment of n-type semiconductor.

(B) The emitter is of moderate size and heavily doped.

(C) The central segment is thin and lightly doped.

(D) The emitter base junction is reverse biased in common emitter amplifier circuit.

Identify the correct statements regarding Mass flow hypothesis.

(A) Mass flow is faster than diffusion.

(B) Mass flow is the result of pressure difference between the end points.

(C) Different substances involved in mass flow move at different paces.

(D) Mass flow can result through either a positive or a negative hydrostatic pressure gradient.

Choose the correct answer from the options given below :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Lithium and beryllium unlike their other respective group members form compounds with pronounced ionic character.

Reason (R) : Lithium and Magnesium have similar properties due to diagonal relationship.

In the light of the above statements, choose the correct answer from the options given below:

A block of mass 2 kg is placed on inclined rough surface AC (as shown in figure) of coefficient of friction \(\mu\). If g = 10 m s\(^{-2}\), the net force (in N) on the block will be:

Given below are two statements :

Statement I : The process of translocation through phloem is unidirectional but through xylem, it is bidirectional.

Statement II : The most readily mobilized elements are phosphorus, sulphur, nitrogen and potassium.

In the light of the above statements, choose the most appropriate answer from the options given below :