JEE Main 11th January 2019 Shift 2

Instructions

For the following questions answer them individually

JEE Main 11th January 2019 Shift 2 - Question 41


Which of the following compounds will produce a precipitate with $$AgNO_3$$?

JEE Main 11th January 2019 Shift 2 - Question 42


Taj Mahal is being slowly disfigured and discoloured. This is primarily due to

JEE Main 11th January 2019 Shift 2 - Question 43


The higher concentration of which gas in air can cause stiffness of flower buds?

JEE Main 11th January 2019 Shift 2 - Question 44


The radius of the largest sphere which fits properly at the centre of the edge of a body centred cubic unit cell is: (Edge length is represented by 'a')

JEE Main 11th January 2019 Shift 2 - Question 45


$$K_2HgI_4$$ is 40% ionised in aqueous solution. The value of its van't Hoff factor (i) is:

JEE Main 11th January 2019 Shift 2 - Question 46


Given the equilibrium constant: $$K_C$$ of the reaction: $$Cu(s) + 2Ag^+(aq) \to Cu^{2+}(aq) + 2Ag(s)$$ is $$10 \times 10^{15}$$. Calculate the $$E°_{cell}$$ of this reaction at 298 K. [$$2.303 \frac{RT}{F}$$ at 298 K = 0.059 V]

JEE Main 11th January 2019 Shift 2 - Question 47


The reaction $$2X \to B$$ is a zeroth order reaction. If the initial concentration of X is 0.2M, the half-life is 6 h. When the initial concentration of X is 0.5M, the time required to reach its final concentration of 0.2M will be

JEE Main 11th January 2019 Shift 2 - Question 48


Among the colloids cheese (C), milk (M) and smoke (S), the correct combination of the dispersed phase and dispersion medium, respectively is:

JEE Main 11th January 2019 Shift 2 - Question 49


The reaction that does NOT define calcination is:

JEE Main 11th January 2019 Shift 2 - Question 50


$$A \xrightarrow{4KOH, O_2} 2B_{(Green)} + 2H_2O$$; $$B \xrightarrow{4HCl} 2C_{(Purple)} + MnO_2 + 2H_2O$$; $$2C \xrightarrow{H_2O, KI} 2A + KOH + D$$. In the above sequence of reactions, A and D, respectively, are:

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