1

WB JEE 2020

MCQ (Single Correct Answer)

+1

-0.25

The expression ax

^{2}+ bx + c (a, b and c are real) has the same sign as that of a for all x if2

WB JEE 2020

MCQ (Single Correct Answer)

+2

-0.5

Let z

_{1}and z_{2}be two imaginary roots of z^{2}+ pz + q = 0, where p and q are real. The points z_{1}, z_{2}and origin form an equilateral triangle if3

WB JEE 2020

MCQ (Single Correct Answer)

+2

-0.5

If P(x) = ax

^{2}+ bx + c and Q(x) = $$ - $$ax^{2}+ dx + c, where ac $$ \ne $$ 0 [a, b, c, d are all real], then P(x).Q(x) = 0 has4

WB JEE 2019

MCQ (Single Correct Answer)

+1

-0.25

Let a, b, c be real numbers such that a + b + c < 0 and the quadratic equation ax

^{2}+ bx + c = 0 has imaginary roots. Then,Questions Asked from Quadratic Equations (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 Circular 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

Algebra

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

Trigonometry

Coordinate Geometry

Calculus