class 11

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JEE Main

The following statements concern elements in the periodic table. Which of the following is true ?

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A projectile is given an initial velocity of $(i^+2j^ )m/s,$ where $i^$ is along the ground and $j^ $ is along the vertical. If $g=10m/s_{2},$ the equation of its trajectory is:

Let A and B be two sets containing 2 elements and 4 elements respectively. The number of subsets of $A×B$having 3 or more elements is

If $X={4_{n}−3n−1:n∈N}andY={9(n−1):n∈N}$, where N is the set of natural numbers, then $X∪Y$is equal to

Given $E_{cr_{3+}/Cr}=−0.74V,E_{MnO_{4}/Mn_{2+}}=1.51cm$ $E_{Cr_{2}O_{7}/Cr_{3+}}=1.33V,E_{Cl/Cl_{−}}=1.36V$ Based on the data given above, strongest oxidising agent will be:

In which of the following reactions $H_{2}O_{2}$ acts as a reducing agent ?

This question has statement I and statement II. Of the four choices given after the statements, choose the one that best describes the two statements. Statement- I: Higher the range, greater is the resistance of ammeter. Statement- II: To increase the range of ammeter, additional shunt needs to be used across it.

The angle between the lines whose direction cosines satisfy the equations $l+m+n=0$and $l_{2}=m_{2}+n_{2}$is

What is the minimum energy required to launch a satellite of mass m from the surface of a planet of mass M and radius R in a circular orbit at an altitude of 2R?