1
JEE Main 2023 (Online) 10th April Morning Shift
Numerical
+4
-1
Change Language

The sum of lone pairs present on the central atom of the interhalogen IF$$_5$$ and IF$$_7$$ is _________

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2
JEE Main 2023 (Online) 10th April Morning Shift
Numerical
+4
-1
Change Language

The number of incorrect statement/s about the black body from the following is __________

(A) Emit or absorb energy in the form of electromagnetic radiation.

(B) Frequency distribution of the emitted radiation depends on temperature.

(C) At a given temperature, intensity vs frequency curve passes through a maximum value.

(D) The maximum of the intensity vs frequency curve is at a higher frequency at higher temperature compared to that at lower temperature.

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3
JEE Main 2023 (Online) 10th April Morning Shift
Numerical
+4
-1
Out of Syllabus
Change Language

At constant temperature, a gas is at a pressure of 940.3 mm Hg. The pressure at which its volume decreases by 40% is __________ mm Hg. (Nearest integer)

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4
JEE Main 2023 (Online) 10th April Morning Shift
Numerical
+4
-1
Change Language

A molecule undergoes two independent first order reactions whose respective half lives are 12 min and 3 min. If both the reactions are occurring then the time taken for the 50% consumption of the reactant is ___________ min. (Nearest integer)

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