NTA JEE Main 9th April 2016 Online - Chemistry

NTA JEE Main 9th April 2016 Online - Chemistry - Question 31

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An organic compound contains C, H and S. The minimum molecular weight of the compound containing 8% Sulphur is

A

600 g mol$$^{-1}$$

B

200 g mol$$^{-1}$$

C

400 g mol$$^{-1}$$

D

300 g mol$$^{-1}$$

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 32

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The amount of arsenic pentasulphide that can be obtained when 35.5 g arsenic acid is treated with excess $$H_2S$$ in the presence of conc. HCl (assuming 100% conversion) is

A

0.25 mol

B

0.50 mol

C

0.333 mol

D

0.125 mol

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 33

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The total number of orbitals associated with the principal quantum number 5 is:

A

20

B

25

C

10

D

5

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 34

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The group of molecules having identical shape is:

A

$$PCl_5$$, $$IF_5$$, $$XeO_2F_2$$

B

$$BF_3$$, $$PCl_3$$, $$XeO_3$$

C

$$SF_4$$, $$XeF_4$$, $$CCl_4$$

D

$$ClF_3$$, $$XeOF_2$$, $$XeF_3^+$$

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 35

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At very high pressures, the compressibility factor of one mole of a gas is given by:

A

$$1 + \frac{Pb}{RT}$$

B

$$\frac{Pb}{RT}$$

C

$$1 - \frac{Pb}{RT}$$

D

$$1 - \frac{b}{(VRT)}$$

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 36

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Which intermolecular force is most responsible in allowing xenon gas to liquefy?

A

London forces

B

Ion-dipole

C

Ionic

D

Dipole-dipole

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 37

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For the reaction,
$$A(g) + B(g) \to C(g) + D(g)$$, $$\Delta H°$$ and $$\Delta S°$$ are, respectively, $$-29.8$$ kJ mol$$^{-1}$$ and $$-0.100$$ kJ K$$^{-1}$$ mol$$^{-1}$$ at 298 K. The equilibrium constant for the reaction at 298 K is:

A

$$1.0 \times 10^{-10}$$

B

10

C

1

D

$$1.0 \times 10^{10}$$

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 38

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A reaction at 1 bar is non-spontaneous at low temperature but becomes spontaneous at high temperature. Identify the correct statement about the reaction among the following:

A

$$\Delta H$$ is negative while $$\Delta S$$ is positive

B

Both $$\Delta H$$ and $$\Delta S$$ are negative

C

$$\Delta H$$ is positive while $$\Delta S$$ is negative

D

Both $$\Delta H$$ and $$\Delta S$$ are positive

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 39

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Identify the incorrect statement regarding heavy water:

A

It reacts with $$SO_3$$ to form deuterated sulphuric acid $$(D_2SO_4)$$.

B

It is used as a coolant in nuclear reactors.

C

It reacts with $$CaC_2$$ to produce $$C_2D_2$$ and $$Ca(OD)_2$$.

D

It reacts with $$Al_4C_3$$ to produce $$CD_4$$ and $$Al(OD)_3$$.

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 40

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The correct order of the solubility of alkaline-earth metal sulphates in water is:

A

Mg > Ca > Sr > Ba

B

Mg > Sr > Ca > Ba

C

Mg < Ca < Sr < Ba

D

Mg < Sr < Ca < Ba

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 41

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Match the items in Column I with its main use listed in Column II:

A

A - iii, B - i, C - iv, D - ii

B

A - iv, B - i, C - ii, D - iii

C

A - ii, B - i, C - iv, D - iii

D

A - ii, B - iv, C - i, D - iii

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 42

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The hydrocarbon with seven carbon atoms containing a neopentyl and a vinyl group is:

A

2,2-dimethyl-4-pentene

B

4,4-dimethylpent-1-ene

C

Isopropyl-2-butene

D

2,2-dimethyl-3-pentene

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 43

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5 L of an alkane requires 25 L of oxygen for its complete combustion. If all volumes are measured at constant temperature and pressure, the alkane is

A

Isobutane

B

Ethane

C

Butane

D

Propane

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 44

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BOD stands for:

A

Bacterial Oxidation Demand

B

Biological oxygen demand

C

Biochemical oxygen demand

D

Both A and B

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 45

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The solubility of $$N_2$$ in water at 300 K and 500 torr partial pressure is 0.01 g L$$^{-1}$$. The solubility (in g L$$^{-1}$$) at 750 torr partial pressure is:

A

0.0075

B

0.005

C

0.02

D

0.015

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 46

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What will happen when a block of copper metal is dropped into a beaker containing a solution of 1 M $$ZnSO_4$$?

A

The copper metal will dissolve with evolution of oxygen gas.

B

The copper metal will dissolve with evolution of hydrogen gas.

C

No reaction will occur.

D

The copper metal will dissolve and zinc metal will be deposited.

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 47

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The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two step process shown below:
$$O_3(g) + Cl^\bullet \to O_2(g) + ClO^\bullet(g)$$ ...(i)
$$k_i = 5.2 \times 10^9$$ L mol$$^{-1}$$ s$$^{-1}$$
$$ClO^\bullet(g) + O^\bullet(g) \to O_2(g) + Cl^\bullet(g)$$ ...(ii)
$$k_{ii} = 2.6 \times 10^{10}$$ L mol$$^{-1}$$ s$$^{-1}$$
The closest rate constant for the overall reaction
$$O_3(g) + O^\bullet(g) \to 2O_2(g)$$ is:

A

$$1.4 \times 10^{20}$$ L mol$$^{-1}$$ s$$^{-1}$$

B

$$3.1 \times 10^{10}$$ L mol$$^{-1}$$ s$$^{-1}$$

C

$$5.2 \times 10^{9}$$ L mol$$^{-1}$$ s$$^{-1}$$

D

$$2.6 \times 10^{10}$$ L mol$$^{-1}$$ s$$^{-1}$$

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 48

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A particular adsorption process has the following characteristics: (i) It arises due to van der Waals forces and (ii) it is reversible. Identify the correct statement that describes the above adsorption process:

A

Adsorption is monolayer

B

Adsorption increases with increase in temperature

C

Enthalpy of adsorption is greater than 100 kJ mol$$^{-1}$$

D

Energy of activation is low

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 49

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The most appropriate method of making egg-albumin sol is:

A

Break an egg carefully and transfer the transparent part of the content to 100 mL of 5% w/V saline solution and stir well

B

Keep the egg in boiling water for 10 minutes. After removing the shell, transfer the yellow part of the content to 100 mL of 5% w/V saline solution and homogenize with a mechanical shaker

C

Keep the egg in boiling water for 10 minutes. After removing the shell, transfer the white part of the content to 100 mL of 5% w/V saline solution and homogenize with a mechanical shaker

D

Break an egg carefully and transfer only the yellow part of the content to 100 mL of 5% w/V saline solution and stir well

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 50

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The plot shows the variation of $$-\ln K_P$$ versus temperature for the two reactions.
$$M(s) + \frac{1}{2}O_2(g) \to MO(s)$$ and
$$C(s) + \frac{1}{2}O_2(g) \to CO(s)$$

Identify the correct statement:

A

At T < 1200 K, oxidation of carbon is unfavourable

B

Oxidation of carbon is favourable at all temperatures

C

At T < 1200 K, the reaction $$MO(s) + C(s) \to M(s) + CO(g)$$ is spontaneous

D

At T > 1200 K, carbon will reduce $$MO_{(s)}$$ to $$M_{(s)}$$.

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 51

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The non-metal that does not exhibit positive oxidation state is:

A

Chlorine

B

Iodine

C

Fluorine

D

Oxygen

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 52

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Which one of the following species is stable in aqueous solution?

A

$$Cr^{2+}$$

B

$$MnO_4^{2-}$$

C

$$MnO_4^{3-}$$

D

$$Cu^+$$

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 53

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Which one of the following complexes will consume more equivalents of aqueous solution of $$AgNO_3$$?

A

$$Na_2[CrCl_5(H_2O)]$$

B

$$Na_3[CrCl_6]$$

C

$$[Cr(H_2O)_5Cl]Cl_2$$

D

$$[Cr(H_2O)_6]Cl_3$$

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 54

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Identify the correct trend given below:
(Atomic No. = Ti : 22, Cr : 24 and Mo : 42)

A

$$\Delta$$ of $$[Cr(H_2O)_6]^{2+} > [Mo(H_2O)_6]^{2+}$$ and $$\Delta$$ of $$[Ti(H_2O)_6]^{3+} > [Ti(H_2O)_6]^{2+}$$

B

$$\Delta$$ of $$[Cr(H_2O)_6]^{2+} > [Mo(H_2O)_6]^{2+}$$ and $$\Delta$$ of $$[Ti(H_2O)_6]^{3+} < [Ti(H_2O)_6]^{2+}$$

C

$$\Delta$$ of $$[Cr(H_2O)_6]^{2+} < [Mo(H_2O)_6]^{2+}$$ and $$\Delta$$ of $$[Ti(H_2O)_6]^{3+} > [Ti(H_2O)_6]^{2+}$$

D

$$\Delta$$ of $$[Cr(H_2O)_6]^{2+} < [Mo(H_2O)_6]^{2+}$$ and $$\Delta$$ of $$[Ti(H_2O)_6]^{3+} < [Ti(H_2O)_6]^{2+}$$

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 55

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The gas evolved on heating $$CH_3MgBr$$ in methanol is:

A

Methane

B

Ethane

C

Propane

D

HBr

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 56

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Bouveault-Blanc reduction reaction involves:

A

Reduction of an acyl halide with $$H_2/Pd$$.

B

Reduction of an anhydride with $$LiAlH_4$$

C

Reduction of an ester with $$Na/C_2H_5OH$$.

D

Reduction of a carbonyl compound with Na/Hg and HCl.

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 57

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The test to distinguish primary, secondary and tertiary amines is:

A

Sandmeyer's reaction

B

Carbylamine reaction

C

Idoform test

D

$$C_6H_5SO_2Cl$$

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 58

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Assertion: Rayon is a semisynthetic polymer whose properties are better than natural cotton.
Reason: Mechanical and aesthetic properties of cellulose can be improved by acetylation.

A

Both assertion and reason are correct, but the reason is not the correct explanation for the assertion.

B

Both assertion and reason are correct, and the reason is the correct explanation for the assertion.

C

Assertion is incorrect statement, but the reason is correct.

D

Both assertion and reason are incorrect.

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 59

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The artificial sweetener that has the highest sweetness value in comparison to cane sugar is:

A

Sucralose

B

Aspartame

C

Saccharin

D

Alitame

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NTA JEE Main 9th April 2016 Online - Chemistry - Question 60

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Consider the following sequence for aspartic acid:

The pH (Isoelectric point) of aspartic acid is:

A

3.65

B

2.77

C

5.74

D

1.88

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