NTA JEE Main 9th April 2019 Shift 2
For the following questions answer them individually
NTA JEE Main 9th April 2019 Shift 2 - Question 31
What would be the molality of 20% (mass/mass) aqueous solution of KI? (molar mass of KI = 166 g mol$$^{-1}$$)
NTA JEE Main 9th April 2019 Shift 2 - Question 32
Which one of the following about an electron occupying the 1s orbital in a hydrogen atom is incorrect? (The Bohr radius is represented by a$$_0$$).
NTA JEE Main 9th April 2019 Shift 2 - Question 33
Among the following species, the diamagnetic molecule is:
NTA JEE Main 9th April 2019 Shift 2 - Question 34
At a given temperature T, gases Ne, Ar, Xe and Kr are found to deviate from ideal gas behaviour. Their equation of state is given as $$p = \frac{RT}{V - b}$$ at T. Here, b is the van der Waals constant. Which gas will exhibit steepest increase in the plot of Z (compression factor) vs p?
NTA JEE Main 9th April 2019 Shift 2 - Question 35
During compression of a spring the work done is 10 kJ and 2 kJ escaped to the surroundings as heat. The change in internal energy, $$\Delta U$$ (in kJ) is:
NTA JEE Main 9th April 2019 Shift 2 - Question 36
In an acid-base titration, 0.1 M HCl solution was added to the NaOH solution of unknown strength. Which of the following correctly shows the change of pH of the titration mixture in this experiment?
NTA JEE Main 9th April 2019 Shift 2 - Question 37
The structures of beryllium chloride in the solid state and vapour phase, respectively, are:
NTA JEE Main 9th April 2019 Shift 2 - Question 38
The correct statements among I to III regarding group 13 element oxides are,
(I) Boron trioxide is acidic.
(II) Oxides of aluminum and gallium are amphoteric.
(III) Oxides of indium and thallium are basic.
NTA JEE Main 9th April 2019 Shift 2 - Question 39
The amorphous form of silica is:
NTA JEE Main 9th April 2019 Shift 2 - Question 40
The layer of atmosphere between 10 km to 50 km above the sea level is called as:
