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NEET Class XII Weekly Mock 19

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Question 1

Which of the following diseases is caused by a protozoan?

Question 2

The colonies of recombinant bacteria appear because of :

Question 3

Which of the following is a restriction endonuclease?

Question 4

Select the correct option w.r.t thermal pollution

Question 5

Presence of plants arranged into well-defined vertical layers depending on their height can be seen best in:

Question 6

Magnetic moment 2.84 BM is given by (At. no. Ni = 28, Ti = 22, Cr = 24, Co = 27)

Question 7

The number of d -electrons in Fe2 +(z = 26) is not equal to the number of electrons in which one of the following?

Question 8

Which is the monomer of Neoprene in the following?

Question 9

The product formed by the reaction of an aldehyde with a primary amine is

Question 10

The heat of combustion of carbon to CO₂ is -393.5 KJ/mol. The heat released upon the formation of 35.2 g of CO₂ from carbon and oxygen gas is

Question 11

In an AC circuit an alternating voltage

volt is connected to a capacitor of capacity 1

. The rms value of the current in the circuit is

Question 12

Two pith balls carrying equal charges are suspended from a common point by strings of equal length, the equilibrium separation between them is r. Now the strings are rigidly clamped at half the height. The equilibrium separation between the balls now become:

Question 13

Steam at 100^oC is passed into 20g of water at 10^oC. When water acquires a temperature of 80^oC, the mass of water present will be:
[ Take specific heat of water = 1 cal g^{–1 o}C^–1and latent heat of steam = 540 cal g^–1]

Question 14

300 J of work is done in sliding a 2 kg block up an inclined plane of height 10 m. Taking g = 10 m/s², work done against friction is :

Question 15

The number of photoelectrons emitted for the light of a frequency v (higher than the threshold frequency v₀) is proportional to

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Aug 7NEET & AIIMS