1

WB JEE 2020

MCQ (Single Correct Answer)

+1

-0.25

Let the relation p be defined on R by a p b holds if and only if a $$ - $$ b is zero or irrational, then

2

WB JEE 2020

MCQ (Single Correct Answer)

+2

-0.5

Let $$A = \{ x \in R: - 1 \le x \le 1\} $$ and $$f:A \to A$$ be a mapping defined by $$f(x) = x\left| x \right|$$. Then f is

3

WB JEE 2020

MCQ (Single Correct Answer)

+2

-0.5

Let p

_{1}and p_{2}be two equivalence relations defined on a non-void set S. Then4

WB JEE 2019

MCQ (Single Correct Answer)

+1

-0.25

Let the relation $$\rho $$ be defined on R as a$$\rho $$b if 1 + ab > 0. Then,

Questions Asked from Sets and Relations (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

WB JEE Subjects

Physics

Mechanics

Units & Measurements Vector Algebra Motion Laws of Motion Work Power & Energy Center of Mass Rotational Motion Properties of Matter Heat and Thermodynamics Simple Harmonic Motion Waves Gravitation

Electricity

Electrostatics Current Electricity Capacitor Magnetism Electromagnetic Induction Alternating Current Electromagnetic Waves

Optics

Modern Physics

Chemistry

Physical Chemistry

Some Basic Concepts of Chemistry Atomic Structure Redox Reaction Gaseous State Chemical Equilibrium Liquid Solution Ionic Equilibrium Thermodynamics Chemical Kinetics Radioactivity and Nuclear Chemistry Electrochemistry Solid State Surface Chemistry

Inorganic Chemistry

Periodic Table Chemical Bonding Metallurgy Hydrogen and It's Compounds Some s Block Elements Some P Block Elements d and f Block Elements Coordination Compounds

Organic Chemistry

Mathematics

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Sets and Relations Logarithms Sequence and Series Quadratic Equations Permutations and Combinations Mathematical Induction and Binomial Theorem Matrices and Determinants Vector Algebra Three Dimensional Geometry Probability Complex Numbers Statistics

Trigonometry

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