NTA JEE Main 9th April 2019 Shift 1 - Chemistry

NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 31

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For a reaction, N$$_2$$(g) + 3H$$_2$$(g) $$\rightarrow$$ 2NH$$_3$$(g), identify di-hydrogen (H$$_2$$) as a limiting reagent in the following reaction mixtures.

A

28 g of N$$_2$$ + 6 g of H$$_2$$

B

35 g of N$$_2$$ + 8 g of H$$_2$$

C

56 g of N$$_2$$ + 10 g of H$$_2$$

D

14 g of N$$_2$$ + 4 g of H$$_2$$

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 32

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For any given series of spectral lines of atomic hydrogen, let $$\Delta\bar{v} = \bar{v}_{max} - \bar{v}_{min}$$ be the difference in maximum and minimum wave number in cm$$^{-1}$$. The ratio $$\Delta\bar{v}_{Lyman}/\Delta\bar{v}_{Balmer}$$ is:

A

5 : 4

B

27 : 5

C

4 : 1

D

9 : 4

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 33

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The element having the greatest difference between its first and second ionization energies, is:

A

Ba

B

K

C

Ca

D

Sc

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 34

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Among the following, the molecule expected to be stabilized by anion formation is: C$$_2$$, O$$_2$$, NO, F$$_2$$

A

F$$_2$$

B

C$$_2$$

C

O$$_2$$

D

NO

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 35

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Consider the van der Waal's constants, a and b, for the following gases.

Which gas is expected to have the highest critical temperature?

A

Kr

B

Ar

C

Xe

D

Ne

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 36

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Among the following, the set of parameters that represents path functions, is:
i) q + w
ii) q
iii) w
iv) H - TS

A

(ii) and (iii)

B

(i), (ii), and (iii)

C

(ii), (iii) and (iv)

D

(i) and (iv)

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 37

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Magnesium powder burns in air to give:

A

MgO and Mg$$_3$$N$$_2$$

B

MgO only

C

Mg(NO$$_3$$)$$_2$$ and Mg$$_3$$N$$_2$$

D

MgO and Mg(NO$$_3$$)$$_2$$

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 38

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C$$_{60}$$, an allotrope of carbon contains:

A

12 hexagons and 20 pentagons.

B

16 hexagons and 16 pentagons.

C

18 hexagons and 14 pentagons.

D

20 hexagons and 12 pentagons.

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 39

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The correct IUPAC name of the following compound is:

A

5-chloro-4-methyl-1-nitrobenzene.

B

2-chloro-1-methyl-4-nitrobenzene.

C

2-methyl-5-nitro-1-chlorobenzene.

D

3-chloro-4-methyl-1-nitrobenzene.

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 40

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

A

A < B < C < D

B

B < C < A < D

C

D < B < A < C

D

D < A < C < B

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 41

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The major product of the following reaction is:

A

B

C

D

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 42

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The major product of the following reaction is:

A

CH$$_3$$CD(I)CHD(Cl)

B

CH$$_3$$CD(Cl)CHD(I)

C

CH$$_3$$CD$$_2$$CH(Cl)(I)

D

CH$$_3$$C(I)(Cl)CHD$$_2$$

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 43

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Excessive release of CO$$_2$$ into the atmosphere results in:

A

global warming.

B

polar vortex.

C

depletion of ozone.

D

formation of smog.

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 44

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The osmotic pressure of a dilute solution of an ionic compound XY in water is four times that of a solution of 0.01 M BaCl$$_2$$ in water. Assuming complete dissociation of the given ionic compounds in water, the concentration of XY (in mol L$$^{-1}$$) in solution is:

A

$$4 \times 10^{-2}$$

B

$$16 \times 10^{-4}$$

C

$$4 \times 10^{-4}$$

D

$$6 \times 10^{-2}$$

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 45

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Liquid M and liquid N form an ideal solution. The vapour pressures of pure liquids M and N are 450 and 700 mmHg, respectively, at the same temperature. Then correct statements is:
(x$$_M$$ = Mole fraction of 'M' in solution; x$$_N$$ = Mole fraction of 'N' in solution; y$$_M$$ = Mole fraction of 'M' in vapour phase; y$$_N$$ = Mole fraction of 'N' in vapour phase)

A

$$\frac{x_M}{x_N} > \frac{y_M}{y_N}$$

B

$$\frac{x_M}{x_N} = \frac{y_M}{y_N}$$

C

$$\frac{x_M}{x_N} < \frac{y_M}{y_N}$$

D

$$(x_M - y_M) < (x_N - y_N)$$

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 46

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The standard Gibbs energy for the given cell reaction in kJ mol$$^{-1}$$ at 298 K is:
Zn(s) + Cu$$^{2+}$$(aq) $$\rightarrow$$ Zn$$^{2+}$$(aq) + Cu(s),
E$$^0$$ = 2 V at 298 K
(Faraday's constant, F = 96000 C mol$$^{-1}$$)

A

-192

B

192

C

384

D

-384

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 47

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The given plots represent the variation of the concentration of a reactant R with time for two different reactions (i) and (ii). The respective orders of the reaction are:

A

1, 1

B

0, 1

C

1, 0

D

0, 2

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 48

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The aerosol is a kind of colloid in which:

A

solid is dispersed in gas.

B

liquid is dispersed in water.

C

gas is dispersed in solid.

D

gas is dispersed in liquid.

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 49

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The ore that contains the metal in the form of fluoride is known as which of the following?

A

cryolite

B

magnetite

C

malachite

D

sphalerite

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 50

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Match the catalysts (Column I) with products (Column II)

A

(A)-(S); (B)-(R); (C)-(Q); (D)-(P)

B

(A)-(R); (B)-(S); (C)-(P); (D)-(Q)

C

(A)-(Q); (B)-(R); (C)-(P); (D)-(S)

D

(A)-(R); (B)-(P); (C)-(Q); (D)-(S)

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 51

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The correct order of the oxidation states of nitrogen in NO, N$$_2$$O, NO$$_2$$ and N$$_2$$O$$_3$$ is:

A

N$$_2$$O < NO < N$$_2$$O$$_3$$ < NO$$_2$$

B

NO$$_2$$ < N$$_2$$O$$_3$$ < NO < N$$_2$$O

C

NO$$_2$$ < NO < N$$_2$$O$$_3$$ < N$$_2$$O

D

N$$_2$$O < N$$_2$$O$$_3$$ < NO < NO$$_2$$

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 52

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The number of water molecules not coordinated to copper ion directly in CuSO$$_4$$ . 5H$$_2$$O, is:

A

4

B

2

C

1

D

3

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 53

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The degenerate orbitals of [Cr(H$$_2$$O)$$_6$$]$$^{3+}$$ are:

A

$$d_{x^2-y^2}$$ and $$d_{xy}$$

B

$$d_{z^2}$$ and $$d_{xz}$$

C

$$d_{yz}$$ and $$d_{z^2}$$

D

$$d_{xz}$$ and $$d_{yz}$$

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 54

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The one that will show optical activity is (en = ethane-1, 2-diamine):

A

B

C

D

Option (4)

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 55

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The major product of the following reaction is:

1. PBr$$_3$$
2. KOH (alc.)

A

B

C

D

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 56

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The organic compound that gives following qualitative analysis is:

A

B

C

D

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 57

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The major product of the following reaction is:

A

B

C

D

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 58

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The major product of the following reaction is:
CH$$_3$$CH = CHCO$$_2$$CH$$_3$$ $$\xrightarrow{\text{LiAlH}_4}$$

A

CH$$_3$$CH$$_2$$CH$$_2$$CO$$_2$$CH$$_3$$

B

CH$$_3$$CH = CHCH$$_2$$OH

C

CH$$_3$$CH$$_2$$CH$$_2$$CH$$_2$$OH

D

CH$$_3$$CH$$_2$$CH$$_2$$CHO

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 59

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Aniline dissolved in dilute HCl is reacted with sodium nitrite at 0°C. This solution was added dropwise to a solution containing an equimolar mixture of aniline and phenol in dilute HCl. The structure of the major product is:

A

B

C

D

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NTA JEE Main 9th April 2019 Shift 1 - Chemistry - Question 60

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Which of the following statements is not true about sucrose?

A

It is also named as invert sugar.

B

It is a non-reducing sugar.

C

The glycosidic linkage is present between C$$_1$$ of $$\alpha$$-glucose and C$$_1$$ of $$\beta$$-fructose.

D

On hydrolysis, it produces glucose and fructose.

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