[Download PDF] NTA JEE Main 10th April 2019 Shift 1

Instructions

For the following questions answer them individually

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 31

At 300 K and 1 atmospheric pressure, 10 mL of a hydrocarbon required 55 mL of O$$_2$$ for complete combustion, and 40 mL of CO$$_2$$ is formed. The formula of the hydrocarbon is:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 32

The graph between $$|\psi|^2$$ and r (radical distance) is shown below. This represents:

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 33

The isoelectronic set of ions is:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 34

During the change of O$$_2$$ to O$$_2^-$$, the incoming electron goes to the orbital:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 35

Consider the following table:

Gas    a/(kPa dm$$^6$$ mol$$^{-1}$$)    b/(dm$$^3$$ mol$$^{-1}$$)
A 642.32 0.05196
B    155.21     0.04136
C    431.91 0.05196
D   155.21     0.4382

a and b are van der Waals constants. The correct statement about the gases is:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 36

A process will be spontaneous at all temperatures if:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 37

Consider the following statements
(a) The pH of a mixture containing 400 mL of 0.1 M H$$_2$$SO$$_4$$ and 400 mL of 0.1 M NaOH will be approximately 1.3.
(b) Ionic product of water is temperature dependent.
(c) A monobasic acid with K$$_a$$ = 10$$^{-5}$$ has a pH = 5. The degree of dissociation of this acid is 50%.
(d) The Le Chatelier's principle is not applicable to common-ion effect.
The correct statements are:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 38

The synonym for water gas when used in the production of methanol is:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 39

The alloy used in the construction of aircrafts is:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 40

The correct order of catenation is:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 41

The principle of column chromatography is:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 42

The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reactions is:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 43

The regions of the atmosphere, where clouds form and where we live, respectively, are:

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 44

At room temperature, a dilute solution of urea is prepared by dissolving 0.60 g of urea in 360 g of water. If the vapour pressure of pure water at this temperature is 35 mm Hg, lowering of vapour pressure will be:
(molar mass of urea = 60 g mol$$^{-1}$$)

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 45

Consider the statements S1 and S2:
S1: Conductivity always increases with decreases in the concentration of electrolyte.
S2: Molar conductivity always increases with decreases in the concentration of electrolyte.
The correct option among the following

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 46

A bacterial infection in an internal wound grows as N'(t) = N$$_0$$exp(t), where the time t is in hours. A dose of antibiotic, taken orally, needs 1 hour to reach the wound. Once it reaches there, the bacterial population goes down as $$\frac{dN}{dt} = -5N^2$$. What will be the plot of $$\frac{N_0}{N}$$ vs t after 1 hour?

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 47

A gas undergoes physical adsorption on a surface and follows the given Freundlich adsorption isotherm equation
$$\frac{x}{m} = kp^{0.5}$$
Adsorption of the gas increases with:

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 48

Match the refining methods (Column I) with metals (Column II).
  Column I    Column II
(Refining methods) (Metals)
(I) Liquation (a) Zr
(II) Zone Refining     (b) Ni
(III) Mond Process    (c) Sn
(IV) Van Arkel Method       (d) Ga

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 49

The oxoacid of sulphur that does not contain bond between sulphur atom is:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 50

Consider the hydrated ions of Ti$$^{2+}$$, V$$^{2+}$$, Ti$$^{3+}$$ and Sc$$^{3+}$$. The correct order of their spin-only magnetic moments is:

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 51

The species that can have a trans-isomer is:
(en = ethane-1, 2-diamine, ox = oxalate)

Solution

NTA JEE Main 10th April 2019 Shift 1 - Chemistry - Question 52

Three complexes,
[CoCl(NH$$_3$$)$$_5$$]$$^{2+}$$(I), [Co(NH$$_3$$)$$_5$$H$$_2$$O]$$^{3+}$$(II) and [Co(NH$$_3$$)$$_6$$]$$^{3+}$$(III)
absorb light in the visible region. The correct order of the wavelength of light absorbed by them is: