1

WB JEE 2021

MCQ (Single Correct Answer)

+1

-0.25

Let $$\alpha$$, $$\beta$$ be the roots of the equation x

^{2}$$-$$ 6x $$-$$ 2 = 0 with $$\alpha$$ > $$\beta$$. If a_{n}= $$\alpha$$^{n}$$-$$ $$\beta$$^{n}for n $$\ge$$ 1, then the value of $${{{a_{10}} - 2{a_8}} \over {2{a_9}}}$$ is2

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 if3

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 if4

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 hasQuestions 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
Work Power & Energy
Center of Mass
Rotational Motion
Properties of Matter
Heat and Thermodynamics
Simple Harmonic Motion
Waves
Gravitation

Electricity

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

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

Trigonometry

Coordinate Geometry

Calculus