Which of the following option correctly describes the variation of the speed v and acceleration 'a' of a point mass falling vertically in a viscous medium that applies a force F = -kv , where 'k' is a constant, on the body ? (Graphs are schematic and not drawn to scale)

Graph in which v starts from zero and increases with time, saturating to a constant value, while a starts at a high value and decreases to zero.

The potential (in volts) of a charge distribution is given by V(z) = 30 - 5z^2 for z ≤ 1 m V(z) = 35 - 10 z for z ≥ 1 m V(z) does not depend on x and y. If this potential is generated by a constant charge per unit volume ρ_0 (in units of ε_0 ) which is spread over a certain region, then choose the c

ρ_0 = 10 ε_0 for z ≤ 1 m and ρ_0 = 0 elsewhere

Three capacitors each of 4 are to be connected in such a way that the effective capacitance is 6 . This can be done by connecting them :

two in series and one in parallel

A 50 Ω resistance is connected to a battery of 5 V. A galvanometer of resistance 100 Ω is to be used as an ammeter to measure current through the resistance, for this a resistance r_s is connected to the galvanometer. Which of the following connections should be employed if the measured current is w

r_s = 0.5 Ω in parallel with the galvanometer

A series LR circuit is connected to a voltage source with V(t) = V_0 Ω t . After very large time, current I(t) behaves as (t_0 (L)/(R) ) :

I(t) is a sustained sinusoid of constant amplitude oscillating symmetrically about zero for t > t_0

Microwave oven acts on the principle of :

giving rotational energy to water molecules

When photons of wavelength λ_1 are incident on an isolated sphere, the corresponding stopping potential is found to be V. When photons of wavelength λ_2 are used, the corresponding stopping potential was thrice that of the above value. If light of wavelength λ_3 is used then find the stopping potent

(hc)/(e) [(1)/(λ_3) + (1)/(2λ_2) - (3)/(2λ_1) ]

An unknown transistor needs to be identified as a npn or pnp type. A multimeter, with + ve and - ve terminals, is used to measure resistance between different terminals of transistor. If terminal 2 is the base of the transistor then which of the following is correct for a pnp transistor ?

+ ve terminal 2, - ve terminal 1, resistance high

The plot shows the variation of - K_p versus temperature for the two reactions. M(s) + (1)/(2) O_2(g) → MO(s) and C(s) + (1)/(2) O_2(g) → CO(s) Identify the correct statement :

At T < 1200 K, the reaction MO(s) + C(s) → M(s) + CO(g) is spontaneous.

Back to JEE Main PYQs

JEE Main 2016 April 09 Question Paper with Solutions

Q: How many questions are in the JEE Main 2016 April 09 paper?

The JEE Main 2016 April 09 paper has 90 questions — Physics (30), Chemistry (30) and Mathematics (30). Every question is on this page with its correct answer and a step-by-step solution.

Q: What is the marking scheme for JEE Main?

JEE Main awards +4 marks for each correct answer and −1 for a wrong answer, with 0 for questions left unattempted. The paper covers Physics, Chemistry and Mathematics.

Q: Are the answer key and step-by-step solutions provided for the 2016 April 09 paper?

Yes — every question shows the correct answer (answer key) and a detailed step-by-step solution, free to read online.

Q: Can I take the JEE Main 2016 April 09 paper as a timed mock test?

Yes. With a free JEEnify account you can attempt this exact paper as a timed test in the real exam interface, then see your score and weak-area analysis.

All 90 questions from the JEE Main 2016 (April 09) shift — Physics (30), Chemistry (30) and Mathematics (30) — each with the correct answer (answer key) and a step-by-step solution. Read it free online, or attempt the full paper as a timed mock test.

Physics PYQs 2016 Chemistry PYQs 2016 Mathematics PYQs 2016

Chemistry30 questions

Q31Single correctSome Basic Concepts in Chemistry

The amount of arsenic pentasulphide that can be obtained when 35.5 g arsenic acid is treated with excess

H_{2} S

( assuming 100% conversion) is :

(A)

0.50 mol

(B)

0.25 mol

(C)

0.125 mol

(D)

0.333 mol

Q32Single correctStates of Matter

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

(A)

\frac{p b}{RT}

(B)

1 + \frac{p b}{RT}

(C)

1 - \frac{p b}{RT}

(D)

1 - \frac{b}{( V RT )}

Q33Single correctStructure of Atom

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

(A)

5

(B)

10

(C)

20

(D)

25

Q34Single correctStates of Matter

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

(A)

Dipole - dipole

(B)

Ion - dipole

(C)

Instantaneous dipole - induced dipole

(D)

Ionic

Q35Single correctChemical Thermodynamics

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)

Both

Δ H

and

Δ S

are positive.

(B)

Both

Δ H

and

Δ S

are negative.

(C)

Δ H

is positive while

Δ S

is negative.

(D)

Δ H

is negative while

Δ S

is positive.

Q36Single correctSolutions

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 mm partial pressure is :

(A)

0.0075

(B)

0.015

(C)

0.02

(D)

0.005

Q37Single correctChemical Thermodynamics

For the reaction,

A (g) + B (g) \to C (g) + D (g), Δ H^{\circ}

and

Δ S^{\circ}

are, respectively,

- 29.8

kJ mo

l^{- 1}

and

- 0.100

K^{- 1}

l^{- 1}

at 298 K. The equilibrium constant for the reaction at 298 K is :

(A)

1.0 \times 1 0^{- 10}

(B)

1.0 \times 1 0^{10}

(C)

10

(D)

1

Q38Single correctRedox Reactions and Electrochemistry

What will occur if a block of copper metal is dropped into a beaker containing a solution of

1 M ZnSO_{4}

(A)

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

(B)

The copper metal will dissolve with evolution of hydrogen gas.

(C)

The copper metal will dissolve with evolution of oxygen gas.

(D)

No reaction will occur.

Q39Single correctChemical Kinetics

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^{∙} (g) \to O_{2} (g) + ClO^{∙} (g)

----- (i)

k_{i} = 5.2 \times 1 0^{9}

L mo

l^{- 1}

s^{- 1}

ClO^{∙} (g) + O^{∙} (g) \to O_{2} (g) + Cl^{∙} (g)

----- (ii)

k_{ii} = 2.6 \times 1 0^{10}

L mo

l^{- 1}

s^{- 1}

The closest rate constant for the overall reaction

O_{3} (g) + O^{∙} (g) \to 2 O_{2} (g)

is :

(A)

5.2 \times 1 0^{9}

L mo

l^{- 1}

s^{- 1}

(B)

2.6 \times 1 0^{10}

L mo

l^{- 1}

s^{- 1}

(C)

3.1 \times 1 0^{10}

L mo

l^{- 1}

s^{- 1}

(D)

1.4 \times 1 0^{20}

L mo

l^{- 1}

s^{- 1}

Q40Single correctSurface Chemistry

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)

Enthalpy of adsorption is greater than

100

kJ mo

l^{- 1}

(B)

Energy of activation is low.

(C)

Adsorption is monolayer.

(D)

Adsorption increases with increase in temperature.

Q41Single correctp-Block Elements

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

(A)

Oxygen

(B)

Iodine

(C)

Chlorine

(D)

Fluorine

Q42Single correctGeneral Principles and Processes of Isolation of Metals

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 plot of -ln Kp (vertical axis, marked at value 20) versus temperature T(K) (horizontal axis, marked at 1200). Two straight lines start from a common region near the left. The upper line is labelled 'M -> MO' and rises (positive slope) with increasing T. The lower line is labelled 'C -> CO' and falls (negative slope) with increasing T. The two lines cross near T = 1200 K; above 1200 K the C->CO line lies below the M->MO line.

(A)

At T

>

1200 K, carbon will reduce MO(s) to M(s).

(B)

At T

<

1200 K, the reaction MO(s)

+

C(s)

\to

M(s)

+

CO(g) is spontaneous.

(C)

At T

<

1200 K, oxidation of carbon is unfavourable.

(D)

Oxidation of carbon is favourable at all temperatures.

Q43Single correctHydrogen

Identify the incorrect statement regarding heavy water :

(A)

It reacts with

Al_{4} C_{3}

to produce

CD_{4}

and

Al(OD)_{3}

(B)

It is used as a coolant in nuclear reactors.

(C)

It reacts with

CaC_{2}

to produce

C_{2} D_{2}

and

Ca(OD)_{2}

(D)

It reacts with

SO_{3}

to form deuterated sulphuric acid (

D_{2} SO_{4}

Q44Single corrects-Block Elements

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 > Sr > Ca > Ba

(D)

Mg > Ca > Sr > Ba

Q45Single correctp-Block Elements

Match the items in Column I with their use mentioned in Column II :

Column I	Column II
(A). Silica gel	(i). Transistor
(B). Silicon	(ii). Ion-exchanger
(C). Silicone	(iii). Drying agent
(D). Silicate	(iv). Sealant

(A)

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

(B)

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

(C)

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

(D)

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

Q46Single correctChemical Bonding and Molecular Structure

The group of molecules having identical shape is :

(A)

SF_{4}, XeF_{4}, CCl_{4}

(B)

ClF_{3}, XeOF_{2}, XeF_{3}^{+}

(C)

BF_{3}, PCl_{3}, XeO_{3}

(D)

PCl_{5}, IF_{5}, XeO_{2} F_{2}

Q47Single correctThe d- and f-Block Elements

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

(A)

Cr^{2 +}

(B)

Cu^{+}

(C)

MnO_{4}^{3 -}

(D)

MnO_{4}^{2 -}

Q48Single correctCoordination Compounds

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

Ag(NO_{3})

(A)

Na_{3} [CrCl_{6}]

(B)

[Cr(H_{2} O)_{5} Cl] Cl_{2}

(C)

[Cr(H_{2} O)_{6}] Cl_{3}

(D)

Na_{2} [CrCl_{5} (H_{2} O)]

Q49Single correctCoordination Compounds

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

(A)

Δ_{0}

[Cr(H_{2} O)_{6}]^{2 +} > [Mo(H_{2} O)_{6}]^{2 +}

and

Δ_{0}

[Ti(H_{2} O)_{6}]^{3 +} > [Ti(H_{2} O)_{6}]^{2 +}

(B)

Δ_{0}

[Cr(H_{2} O)_{6}]^{2 +} > [Mo(H_{2} O)_{6}]^{2 +}

and

Δ_{0}

[Ti(H_{2} O)_{6}]^{3 +} < [Ti(H_{2} O)_{6}]^{2 +}

(C)

Δ_{0}

[Cr(H_{2} O)_{6}]^{2 +} < [Mo(H_{2} O)_{6}]^{2 +}

and

Δ_{0}

[Ti(H_{2} O)_{6}]^{3 +} > [Ti(H_{2} O)_{6}]^{2 +}

(D)

Δ_{0}

[Cr(H_{2} O)_{6}]^{2 +} < [Mo(H_{2} O)_{6}]^{2 +}

and

Δ_{0}

[Ti(H_{2} O)_{6}]^{3 +} < [Ti(H_{2} O)_{6}]^{2 +}

Q50Single correctEnvironmental Chemistry

BOD stands for :

(A)

Biological Oxygen Demand

(B)

Bacterial Oxidation Demand

(C)

Biochemical Oxygen Demand

(D)

Biochemical Oxidation Demand

Q51Single correctSome Basic Concepts in Chemistry

An organic compound contains C, H and S. The minimum molecular weight of the compound containing 8% sulphur is :
(atomic weight of S = 32 amu)

(A)

200 g mol^{- 1}

(B)

400 g mol^{- 1}

(C)

600 g mol^{- 1}

(D)

300 g mol^{- 1}

Q52Single correctHydrocarbons

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

(A)

2, 2-dimethyl-4-pentene

(B)

Isopropyl-2-butene

(C)

4, 4-dimethyl-1-pentene

(D)

2, 2-dimethyl-3-pentene

Q53Single correctHydrocarbons

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)

Ethane

(B)

Propane

(C)

Butane

(D)

Isobutane

Q54Single correctOrganic Compounds Containing Halogens

The gas evolved on heating

CH_{3} MgBr

in methanol is :

(A)

HBr

(B)

Methane

(C)

Ethane

(D)

Propane

Q55Single correctAldehydes, Ketones and Carboxylic Acids

Bouveault-Blanc reduction reaction involves :

(A)

Reduction of an acyl halide with

H_{2} / Pd

(B)

Reduction of an ester with

Na / C_{2} H_{5} OH

(C)

Reduction of a carbonyl compound with

Na / Hg

and HCl.

(D)

Reduction of an anhydride with

LiAlH_{4}

Q56Single correctOrganic Compounds Containing Nitrogen

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

(A)

Carbylamine reaction

(B)

C_{6} H_{5} SO_{2} Cl

(C)

Sandmeyer's reaction

(D)

Mustard oil test

Q57Single correctPolymers

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

(B)

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

(C)

Assertion is incorrect statement, but the reason is correct.

(D)

Both assertion and reason are incorrect.

Q58Single correctBiomolecules

Consider the following sequence for aspartic acid :
The

p I

(isoelectric point) of aspartic acid is :

A four-step acid-base dissociation sequence of aspartic acid shown as four skeletal amino-acid structures connected by equilibrium arrows labelled with pK values. Structure 1 (fully protonated): central CH carbon bearing H3N+ on the left, an upper COOH (CO2H) group, a lower side chain CH2CO2H, and an H on the right. An equilibrium arrow labelled pK1 = 1.88 leads to Structure 2: same backbone but the upper carboxyl is now deprotonated CO2- (H3N+ retained, side chain still CH2CO2H). An equilibrium arrow labelled pKR = 3.65 leads to Structure 3 (drawn on the second row): backbone with H3N+ left, upper CO2-, side chain now deprotonated CH2CO2-. An equilibrium arrow labelled pK2 = 9.60 leads to Structure 4: amino group now neutral H2N, upper CO2-, side chain CH2CO2-, H on right. Each structure drawn as a vertical carbon with the amino group and an H on the horizontal bonds and the two carboxyl-bearing groups above and below.

(A)

1.88

(B)

3.65

(C)

5.74

(D)

2.77

Q59Single correctChemistry in Everyday Life

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

(A)

Aspartame

(B)

Saccharin

(C)

Sucralose

(D)

Alitame

Q60Single correctSurface Chemistry

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)

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.

(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)

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.

More JEE Main 2016 papers

JEE Main 2016 — April 03

Frequently Asked Questions

How many questions are in the JEE Main 2016 April 09 paper?

The JEE Main 2016 April 09 paper has 90 questions — Physics (30), Chemistry (30) and Mathematics (30). Every question is on this page with its correct answer and a step-by-step solution.

What is the marking scheme for JEE Main?

JEE Main awards +4 marks for each correct answer and −1 for a wrong answer, with 0 for questions left unattempted. The paper covers Physics, Chemistry and Mathematics.

Are the answer key and step-by-step solutions provided for the 2016 April 09 paper?

Yes — every question shows the correct answer (answer key) and a detailed step-by-step solution, free to read online.

Can I take the JEE Main 2016 April 09 paper as a timed mock test?

Yes. With a free JEEnify account you can attempt this exact paper as a timed test in the real exam interface, then see your score and weak-area analysis.

Solved this paper? Calculate your JEE Main score · most important chapters · formula sheets · all free tools.

JEE Main 2016 April 09 Question Paper with Solutions

Physics30 questions

Chemistry30 questions

Mathematics30 questions

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