NEET 2019

Instructions

For the following questions answer them individually

NEET 2019 - Question 41


In which case change in entropy is negative ?

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NEET 2019 - Question 42


A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is:

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NEET 2019 - Question 43


The number of moles of hydrogen molecules required to produce 20 moles of ammonia through Haber’s process is

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NEET 2019 - Question 44


pH of a saturated solution of $$Ca(OH)_2$$ is 9. The solubility product $$(K_{sp}) of Ca(OH)_2$$ is:

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NEET 2019 - Question 45


The mixture that forms maximum boiling azeotrope is :

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NEET 2019 - Question 46


The radius of circle, the period of revolution, initial position and sense of revolution are indicated in the fig.


y - projection of the radius vector of rotating particle P is:

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NEET 2019 - Question 47


A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre:

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NEET 2019 - Question 48


When a block of mass M is suspended by a long wire of length L, the length of the wire becomes (L + l). The elastic potential energy stored in the extended wire is :

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NEET 2019 - Question 49


In total internal reflection when the angle of incidence is equal to the critical angle for the pair of media in contact, what will be angle of refraction ?

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NEET 2019 - Question 50


The correct Boolean operation represented by the circuit diagram drawn is:

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