[Download PDF] NTA JEE Main 15th April 2018 Shift 1

Instructions

For the following questions answer them individually

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 31

A sample of NaClO$$_3$$ is converted by heat to NaCl with a loss of 0.16 g of oxygen. The residue is dissolved in water and precipitated as AgCl. The mass of AgCl (in g) obtained will be: (Given: Molar mass of AgCl = 143.5 g mol$$^{-1}$$)

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 32

Ejection of the photoelectron from metal in the photoelectric effect experiment can be stopped by applying 0.5 V when the radiation of 250 nm is used. The work function of the metal is:

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 33

For Na$$^+$$, Mg$$^{2+}$$, F$$^-$$ and O$$^{2-}$$; the correct order of increasing ionic radii is:

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 34

In the molecular orbital diagram for the molecular ion, N$$_2^+$$, the number of electrons in the $$\sigma_{2p}$$ molecular orbital is:

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 35

Identify the pair in which the geometry of the species is T-shape and square pyramidal, respectively:

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 36

In hydrogen azide, the bond orders of bonds (I) and (II) are:

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 37

In graphite and diamond, the percentage of p characters of the hybrid orbitals in hybridization are respectively:

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 38

The decreasing order of bond angles in BF$$_3$$, NH$$_3$$, PF$$_3$$ and I$$_3^-$$ is:

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 39

For which of the following reactions, $$\Delta H$$ is equal to $$\Delta U$$?

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 40

An ideal gas undergoes a cyclic process as shown in Figure.

$$\Delta U_{BC} = -5$$ kJ mol$$^{-1}$$, $$q_{AB} = 2$$ kJ mol$$^{-1}$$
$$W_{AB} = -5$$ kJ mol$$^{-1}$$, $$W_{CA} = 3$$ kJ mol$$^{-1}$$
Heat absorbed by the system during process CA is:

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 41

In which of the following reactions, an increase in the volume of the container will favour the formation of products?

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 42

Which of the following is a Lewis acid?

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 43

The minimum volume of water required to dissolve 0.1 g lead (II) chloride to get a saturated solution ($$K_{SP}$$ of PbCl$$_2$$ = $$3.2 \times 10^{-8}$$; atomic mass of Pb = 207 u) is:

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 44

A white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution is added to the aforementioned solution, a white precipitate is obtained which does not dissolve in dil. nitric acid. The anion is:

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 45

The correct match between items of List-I and List-II is:

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 46

The IUPAC name of the following compound is:

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 47

Which of the following will most readily give the dehydrohalogenation product?

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 48

The major product of the following reaction is:

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 49

The increasing order of nitration of the following compounds is:

(A) Aniline, (B) Chlorobenzene, (C) Anisole, (D) Toluene

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 50

Which of the following arrangements shows the schematic alignment of magnetic moments of antiferromagnetic substance?

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 51

When an electric current is passes through acidified water, 112 mL of hydrogen gas at N.T.P. was collected at the cathode in 965 seconds. The current passed, in ampere, is:

Solution

NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 52

N$$_2$$O$$_5$$ decomposes to NO$$_2$$ and O$$_2$$ and follows first order kinetics. After 50 minutes, the pressure inside the vessel increases from 50 mm Hg to 87.5 mm Hg. The pressure of the gaseous mixture after 100 minutes at constant temperature will be: