JEE MAIN 2023 ONLINE 1ST FEBRUARY MORNING SHIFT

Which of the following frequencies does not belong to FM broadcast ?

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R

Assertion A: In an Ellingham diagram, the oxidation of carbon to carbon monoxide shows a negative slope with respect to temperature.

Reason R: CO tends to get decomposed at higher temperature.

In the light of the above statements, choose the correct answer from the options given below

In a binomial distribution \(B(n,p)\), the sum and the product of the mean and the variance are 5 and 6 respectively, then \(6(n+p-q)\) is equal to :

In an experiment to find emf of a cell using potentiometer, the length of null point for a cell of emf \(1.5 \mathrm{~V}\) is found to be \(60 \mathrm{~cm}\). If this cell is replaced by another cell of emf E, the length-of null point increases by \(40 \mathrm{~cm}\). The value of \(E\) is \(\frac{x}{10} V\). The value of \(x\) is ____________.

Which of the following represents the lattice structure of \(\mathrm{A_{0.95}O}\) containing \(\mathrm{A^{2+},A^{3+}}\) and \(\mathrm{O^{2-}}\) ions?

The sum of 10 terms of the series

\({1 \over {1 + {1^2} + {1^4}}} + {2 \over {1 + {2^2} + {2^4}}} + {3 \over {1 + {3^2} + {3^4}}}\, + \,....\) is