NTA JEE Main 11th April 2023 Shift 1

25 mL of silver nitrate solution (1M) is added dropwise to 25 mL of potassium iodide (1.05 M) solution. The ion(s) present in very small quantity in the solution is/are

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: In the photoelectric effect, the electrons are ejected from the metal surface as soon as the beam of light of frequency greater than threshold frequency strikes the surface.
Reason R: When the photon of any energy strikes an electron in the atom, transfer of energy from the photon to the electron takes place.
In the light of the above statements, choose the most appropriate answer from the options given below:

For compound having the formula GaAlCl$$_4$$, the correct option from the following is

For elements B, C, N, Li, Be, O and F, the correct order of first ionisation enthalpy is

Match List-I with List-II:

Match List-I with List-II:

Where Nu = Nucleophile
 Find out the correct statement from the options given below for the above two reactions.

Thin layer chromatography of a mixture shows the following observation.

The correct order of elution in the silica gel column chromatography is

Arrange the following compounds in increasing order of rate of aromatic electrophilic substitution reaction.

Given below are two statements:
Statement-I: If BOD is 4 ppm and dissolved oxygen is 8 ppm, then it is a good quality water.
Statement-II: If the concentration of zinc and nitrate salts are 5 ppm each, then it can be a good quality water.
In the light of the above statements, choose the most appropriate answer from the options below: