jee main date: 11 jan 2019 official online exam / 11 ...€¦ · 01/11/2019 · rao iit academy /...

RAO IIT ACADEMY / JEE - MAIN OFFICIAL ONLINE EXAM / 11 January-19 Slot- II / Solutions

JEE MAINOFFICIAL ONLINE

EXAM / 11 January19Slot II / Solutions

Date: 11 Jan 2019

Rao IIT Academy Website : www.raoiit.com1


1. Di�iculty : Easy

Topics :

Newton's Laws of motion,System of particles,

2. Di�iculty : Medium

Topics :

MAGNETISM,

W.D. by magnetic is zero

W.D. =


Topics :

Electromagnetic waves,

=




Topics :

Heat and thermodynamics,


Topics :

Modern Physics,

From to :-

...........(1)

..........(2)




Topics :

Wave optics,

single b/w first & second di�raction

Aungular fringe width

No. of bringe =

= 4.81


Topics :

Current electricity,




Topics :

Capacitors,

9.Di�iculty : Easy

Topics :

Simple harmonic motion,




Topics :

Ray Optics,


Topics :

Modern Physics,




Topics :


condition :-

condition :-


Topics :

Rotational Motion,

Taking torque about the point of contact


Topics :

Electrostatics,




Topics :


% rise in temp =


Topics :

First law of thermodynamics,

Constant

For polytropic process


Topics :

Units,Dimensions & Error analysis,




Topics :


Max K.E.


Topics :


N = Total turns

length of winding = (d) diameter (N)

Self inductance increased by 3 times


Topics :

Equivalent resistance,



21. Di�iculty : Di�icult

Topics :

MAGNETISM,

(Bonus Question)

No option is correct


Topics :


Option (D) is correct


Topics :


Option (C) is correct




Topics :

Rotational Motion,

(option A is correct)


Topics :

Kinematics,

Option (C) is correct


Topics :

Rotational Motion,

(Option (C) is correct)


Topics :





Topics :

MAGNETISM,

Option (A) is correct


Topics :

Communication systems,

Figure of merit

Current senstivity =


Topics :

Communication systems,

Amplitude varies as 8 to 10 i.e. 9 1

time period as (Sinusoidal wave)

AND (carrier wave)

signal is




Topics :

Atomic Structure,

We know

of photoelectron can be written as


Topics :

Thermodynamics,




Topics :

BIOMOLECULES AMINOACIDS,

gives phthalein dye test because of phenolic ring

gives ester test

Gives carbolamine test because of amine


Topics :

CHEMISTRY IN EVERYDAY LIFE,

Taj Mahal is being slowly disfigured and discoloured due to acid rain.




Topics :

Volumetric analysis,

For solution -

For solution-

Now for solution-


Topics :

Periodic,

On going le� to right in a period electronegativity increases due to decrease in size and increase in e�ective nuclear charge.

Hence is more electonegative than .




Topics :

Solid State,

As ball is placed at the edge of a B.C.C. cube.

...... (i)

...... (ii)


Topics :

GOC,

lone pair of are not in resonance. Hence these are favorable sites for protonation.


Topics :

d-block,


Topics :

Polymers,




Topics :

Chemical equilibrium,

Vont Ho� factor


Topics :

Thermodynamics,

We know

Given

is

Hence if then endothermic

if then exothermic


Topics :

AMINES,




Topics :

Electrochemistry,


Topics :

Acid base titration,


Topics :

P-block,

Due to inert pair e�ect on moving down the relative stability of oxidation state increases.




Topics :

Thermodynamics,

For feasible reaction


Topics :

Phenols,Alcohols,

decolourises and also reacts with




Topics :

Coordination Compounds,

is

is bidentate

is monodentate.

The co-ordination number


Topics :


Allosteric e�ect Molecule binding to a site other than the active site of enzyme.

Competitive inhibitor molecular binding to active site of enzyme

Receptor Cruicila molecule for communication in the body.

Poison Molecule binding to enzyme covalently.


Topics :

d-block,

It is a example of roasting because it is in the presence of


Topics :

Coordination Compounds,

No. of bond

bonds




Topics :

GOC,


Topics :

Aromatic compounds,


Topics :

Chemical Kinetics,

Zeroth order reaction.

The time taken in reaction of

hence time required for the reaction of


Topics :

Aromatic compounds,




Topics :

Liquid Solutions,

Cheese is a colloid in which dispersed phase liquid and continuous phase is solid. In milk dispersion phase and continuousphase both are liquid. In smoke dispersion phase is solid and medium is gas


Topics :

S-block,

is obtained from solvay process

is the reason of temperorary hardness

is obtained by castner-kellner process

is a ingredient


Topics :

Hydrogen,

is a electron precise hydride


Topics :


causes sti�ness of flower buds




Topics :

Area under curve,

equation of tanged :

Required area




Topics :

Parabola,




Topics :

Indefinite integration,

Let

Let




Topics :

Definite integration,

Let




Topics :

Determinants & Matrices,

Now,




Topics :

Di�erential Equations,

Let


Topics :

Probability,

No. of white balls drawn




Topics :

Three Dimensional Geometry,Vectors,

Equation of a plane




Topics :

Functions,

Now for only

Now finally

Range here codomain is subset of range so, question is wrong, but if we so; this is not one-one but codomain considercodomain as

The range codomain, so


Topics :

Number Systems,

If the squares of two numbers are equal, then the numbers are equal




Topics :

Quadratic Equations,Inverse Trigonometric Functions,

or




Topics :

Vectors,

Bisector of and is

Then




Topics :

Functions,

Required answer


Topics :

Straight lines,


Topics :

Hyperbola,




Topics :

Trigonometric Equations,


Topics :

Introduction Determinants & Matrices,

Put

So^,

So^,



18.Di�iculty : Medium

Topics :

Solutions of Triangle,


Topics :

Sequence & Series,




Topics :

Limits,

.


Topics :

Sequence & Series,


Topics :

Mathematics,




Topics :

Functions,

is increasing


Topics :

Limits,

R.H.D

L.H.D

L.H.D = R.H.D

is di�esentiable at

is Every where di�erentiable




Topics :

Conics,

This is parabola



26.Di�iculty : Medium

Topics :

Mathematics,

Now ,


Topics :

Complex Numbers,




Topics :

Probability,

Sum should be So we don't want total so;

we can select all except





Required probability

Total No. of subsets


Topics :

Straight lines,

So point

Reflection is




Topics :

Conics,


jee main date: 11 jan 2019 official online exam / 11 ...€¦ · 01/11/2019 · rao iit academy /...

Documents