NTA JEE Main 15th April 2018 Shift 1 - Chemistry

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

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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$$^{-1}$$)

A

0.35

B

0.54

C

0.41

D

0.48

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

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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:

A

4 eV

B

5.5 eV

C

4.5 eV

D

5 eV

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

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

A

O$$^{2-}$$ < F$$^-$$ < Na$$^+$$ < Mg$$^{2+}$$

B

Na$$^+$$ < Mg$$^{2+}$$ < F$$^-$$ < O$$^{2-}$$

C

Mg$$^{2+}$$ < Na$$^+$$ < F$$^-$$ < O$$^{2-}$$

D

Mg$$^{2+}$$ < O$$^{2-}$$ < Na$$^+$$ < F$$^-$$

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

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

A

0

B

2

C

3

D

1

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

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

A

ICl$$_2^-$$ and ICl$$_5$$

B

IO$$_3^-$$ and IO$$_2$$F$$_2^-$$

C

ClF$$_3$$ and IO$$_4^-$$

D

XeOF$$_2$$ and XeOF$$_4$$

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

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

A

I < 2, II > 2

B

I > 2, II > 2

C

I > 2, II < 2

D

I < 2, II < 2

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

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

A

33 and 25

B

67 and 75

C

50 and 75

D

33 and 75

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

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

A

I$$_3^-$$ > BF$$_3$$ > NH$$_3$$ > PF$$_3$$

B

BF$$_3$$ > I$$_3^-$$ > PF$$_3$$ > NH$$_3$$

C

BF$$_3$$ > NH$$_3$$ > PF$$_3$$ > I$$_3^-$$

D

I$$_3^-$$ > NH$$_3$$ > PF$$_3$$ > BF$$_3$$

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

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

A

N$$_2$$(g) + 3H$$_2$$(g) $$\rightarrow$$ 2NH$$_3$$(g)

B

2HI(g) $$\rightarrow$$ H$$_2$$(g) + I$$_2$$(g)

C

2SO$$_2$$(g) + O$$_2$$(g) $$\rightarrow$$ 2SO$$_3$$(g)

D

2NO$$_2$$(g) $$\rightarrow$$ N$$_2$$O$$_4$$(g)

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

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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:

A

-5 kJ mol$$^{-1}$$

B

+5 kJ mol$$^{-1}$$

C

18 kJ mol$$^{-1}$$

D

-18 kJ mol$$^{-1}$$

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

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

A

4NH$$_3$$(g) + 5O$$_2$$(g) $$\rightleftharpoons$$ 4NO(g) + 6H$$_2$$O(l)

B

2NO$$_2$$(g) $$\rightleftharpoons$$ 2NO(g) + O$$_2$$(g)

C

3O$$_2$$ $$\rightleftharpoons$$ 2O$$_3$$(g)

D

H$$_2$$(g) + I$$_2$$(g) $$\rightleftharpoons$$ 2HI(g)

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

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Which of the following is a Lewis acid?

A

PH$$_3$$

B

NF$$_3$$

C

NaH

D

B(CH$$_3$$)$$_3$$

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

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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:

A

1.798 L

B

0.36 L

C

17.95 L

D

0.18 L

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

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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:

A

CO$$_3^{2-}$$

B

SO$$_4^{2-}$$

C

S$$^{2-}$$

D

Cl$$^-$$

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

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

A

(A)-(r), (B)-(s), (C)-(p), (D)-(q)

B

(A)-(p), (B)-(s), (C)-(r), (D)-(q)

C

(A)-(r), (B)-(p), (C)-(q), (D)-(s)

D

(A)-(r), (B)-(p), (C)-(s), (D)-(q)

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

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The IUPAC name of the following compound is:

A

3-ethyl-4-methylhex-4-ene

B

4,4-diethyl-3-methylbut-2-ene

C

4-methyl-3-ethylhex-4-ene

D

4-ethyl-3-methylhex-2-ene

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

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

A

B

C

D

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

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The major product of the following reaction is:

A

B

C

D

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

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The increasing order of nitration of the following compounds is:

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

A

< (B) < (D) < (C)

B

< (B) < (C) < (D)

C

< (A) < (C) < (D)

D

< (A) < (D) < (C)

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

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

A

B

C

D

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

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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:

A

2.0

B

0.1

C

0.5

D

1.0

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

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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:

A

136.25 mm Hg

B

106.25 mm Hg

C

175.0 mm Hg

D

116.25 mm Hg

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NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 53

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Which of the following statements about colloids is false?

A

When silver nitrate solution is added to potassium iodide solution, a negatively charged colloidal solution is formed

B

Freezing point of colloidal solution is lower than true solution at same concentration of a solute

C

Colloidal particles can pass through ordinary filter paper

D

When excess of electrolyte is added to colloidal solution, colloidal particle will be precipitated

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NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 54

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Xenon hexafluoride on partial hydrolysis produces compounds 'X' and 'Y'. Compounds 'X' and 'Y' and the oxidation state of Xe are respectively:

A

XeOF$$_4$$(+6) and XeO$$_3$$(+6)

B

XeO$$_2$$(+4) and XeO$$_3$$(+6)

C

XeOF$$_4$$(+6) and XeO$$_2$$F$$_2$$(+6)

D

XeO$$_2$$F$$_2$$(+6) and XeO$$_2$$(+4)

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NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 55

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The correct combination is:

A

[NiCl$$_4$$]$$^{2-}$$ - square-planar; [Ni(CN)$$_4$$]$$^{2-}$$ - paramagnetic

B

[Ni(CN)$$_4$$]$$^{2-}$$ - tetrahedral; [Ni(CO)$$_4$$] - paramagnetic

C

[NiCl$$_4$$]$$^{2-}$$ - paramagnetic; [Ni(CO)$$_4$$] - tetrahedral

D

[NiCl$$_4$$]$$^{2-}$$ - diamagnetic; [Ni(CO)$$_4$$] - square-planar

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NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 56

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The main reduction product of the following compound with NaBH$$_4$$ in methanol is:

A

B

C

D

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NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 57

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The reagent(s) required for the following conversion are:

A

(i) NaBH$$_4$$, (ii) Raney Ni/H$$_2$$, (iii) H$$_3$$O$$^+$$

B

(i) LiAlH$$_4$$, (ii) H$$_3$$O$$^+$$

C

(i) B$$_2$$H$$_6$$, (ii) DIBAL-H, (iii) H$$_3$$O$$^+$$

D

(i) B$$_2$$H$$_6$$, (ii) SnCl$$_2$$/HCl, (iii) H$$_3$$O$$^+$$

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NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 58

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The copolymer formed by addition polymerization of styrene and acrylonitrile in the presence of peroxide is:

A

B

C

D

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NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 59

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Which of the following will not exist in zwitter ionic form at pH = 7?

A

Amino acid with NH$$_2$$ and COOH

B

Cyclic amide with CO$$_2$$H

C

Aniline with SO$$_3$$H

D

Cyclohexylamine with SO$$_3$$H

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NTA JEE Main 15th April 2018 Shift 1 - Chemistry - Question 60

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Which of the following is the correct structure of adenosine?

A

B

C

D

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