NEET Class XII Weekly Mock 12 for NEET & AIIMS Exams

Question 1

Enzyme used for cutting DNA at specific site in genetic engineering is

Question 2

Nucleic acid segment which is used to find the position of a gene and it forms a hybrid with this gene would by

Question 3

A foreign DNA and plasmid cut by the same restriction endonuclease can be joined to form a recombinant plasmid using

Question 4

Which of the following is a restriction endonuclease?

Question 5

Which of the following restriction enzymes produces blunt ends?

Question 6

In square planar complexes, a d orbital splits into how many sets of orbitals?

Question 7

Zeisse’s salt is:

Question 8

CuSO₄ decolourises on addition of KCN, the product is

Question 9

The pair of the compounds in which both the metals are in the highest possible oxidation state is

Question 10

Silver chloride dissolves in excess of NH₄OH. The cation present in this solution is

Question 11

In the Young's double slit experiment the intensity of light at a point on the screen where the path difference is λ is K, (λ being the wave length of light used). The intensity at a point where the path difference is λ/4, will be :

Question 12

The intensity at the maximum in a Young's double slit experiment is I₀. Distance between two slits is d = 5

, where

is the wavelength of light used in the experiment. What will be the intensity in front of one of the slits on the screen placed at a distance D = 10 d?

Question 13

A astronomical telescope has objective and eyepiece of focal lengths 40 cm 4 cm respectively. To view an object 200 cm away from the objective, the lenses must be separated by a distance

Question 14

In a diffraction pattern due to a single slit of width a, the first minimum is observed at an angle 30⁰ when light of wavelength 5000

is incident on the slit. The first secondary maximum is observed at an angle of

Question 15

A linear aperture whose width is 0.02 cm is placed immediately in front of a lens of focal length 60 cm. The aperture is illuminated normally by a parallel beam of wavelength 5 x 10^-5 cm. The distance of the first dark band of the diffraction pattern from the centre of the screen is