1

JEE Advanced 2020 Paper 1 Offline

Numerical

+4

-0

$$_{92}^{238}U$$ is known to undergo radioactive decay to form $$_{82}^{206}Pb$$ by emitting alpha and beta particles. A rock initially contained 68 $$ \times $$ 10

^{$$-$$6}g of $$_{92}^{238}U$$. If the number of alpha particles that it would emit during its radioactive decay of $$_{92}^{238}U$$ to $$_{82}^{206}Pb$$ in three half-lives is Z $$ \times $$ 10^{18}, then what is the value of Z?Your input ____

2

JEE Advanced 2020 Paper 1 Offline

Numerical

+4

-0

In the following reaction, compound Q is obtained from compound P via an ionic intermediate

What is the degree of unsaturation of Q?

What is the degree of unsaturation of Q?

Your input ____

3

JEE Advanced 2020 Paper 1 Offline

MCQ (Single Correct Answer)

+3

-1

Suppose a, b denote the distinct real roots of the quadratic polynomial x

ac(a $$-$$ c) + ad(a $$-$$ d) + bc(b $$-$$ c) + bd(b $$-$$ d) is

^{2}+ 20x $$-$$ 2020 and suppose c, d denote the distinct complex roots of the quadratic polynomial x^{2}$$-$$ 20x + 2020. Then the value ofac(a $$-$$ c) + ad(a $$-$$ d) + bc(b $$-$$ c) + bd(b $$-$$ d) is

4

JEE Advanced 2020 Paper 1 Offline

MCQ (Single Correct Answer)

+3

-1

If the function f : R $$ \to $$ R is defined by f(x) = |x| (x $$-$$ sin x), then which of the following statements is TRUE?

Paper analysis

Total Questions

Chemistry

18

Mathematics

18

Physics

18

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