JEE MAIN 2022 ONLINE 28TH JUNE EVENING SHIFT

Which of the following oxoacids of sulphur contains "S" in two different oxidation states?

Amplitude modulated wave is represented by \({V_{AM}} = 10\,[1 + 0.4\cos (2\pi \times {10^4}t)]\cos (2\pi \times {10^7}t)\). The total bandwidth of the amplitude modulated wave is :

Let the plane ax + by + cz = d pass through (2, 3, \(-\)5) and is perpendicular to the planes
2x + y \(-\) 5z = 10 and 3x + 5y \(-\) 7z = 12. If a, b, c, d are integers d > 0 and gcd (|a|, |b|, |c|, d) = 1, then the value of a + 7b + c + 20d is equal to :

In the metallurgical extraction of copper, following reaction is used :

FeO + SiO₂ \(\to\) FeSiO₃

FeO and FeSiO₃ respectively are.

Following statements related to radioactivity are given below :

(A) Radioactivity is a random and spontaneous process and is dependent on physical and chemical conditions.

(B) The number of un-decayed nuclei in the radioactive sample decays exponentially with time.

(C) Slope of the graph of log_e (no. of undecayed nuclei) Vs. time represents the reciprocal of mean life time (\(\tau\)).

(D) Product of decay constant (\(\lambda\)) and half-life time (T_1/2) is not constant.

Choose the most appropriate answer from the options given below :

The maximum number of compound propositions, out of p\(\vee\)r\(\vee\)s, p\(\vee\)r\(\vee\)\(\sim\)s, p\(\vee\)\(\sim\)q\(\vee\)s, \(\sim\)p\(\vee\)\(\sim\)r\(\vee\)s, \(\sim\)p\(\vee\)\(\sim\)r\(\vee\)\(\sim\)s, \(\sim\)p\(\vee\)q\(\vee\)\(\sim\)s, q\(\vee\)r\(\vee\)\(\sim\)s, q\(\vee\)\(\sim\)r\(\vee\)\(\sim\)s, \(\sim\)p\(\vee\)\(\sim\)q\(\vee\)\(\sim\)s that can be made simultaneously true by an assignment of the truth values to p, q, r and s, is equal to __________.