એક પ્રક્રિયા નો અર્ધ આયુષ્ય સમય \(1\,min.\) છે તો \(99.9\, \%\) પ્રક્રિયાને પૂર્ણ થવા માટે લાગતો જરૂરી સમય ......... \(min.\) છે [ઉપયોગ : \(\ln\, 2=0.69, \ln \,10=2.3]\)

A \(4\)
B \(15\)
C \(11\)
D \(10\)

Verified Solution

Answer & Solution

Correct Answer

(D) \(10\)

Step-by-step Solution

Detailed explanation

\(\frac{ t _{99.996}}{ t _{50 \%}}=\frac{\frac{1}{ K } \ln \frac{100}{0.1}}{\frac{1}{ K } \ln 2}\) \(=\frac{\ln 1000}{\ln 2} \times t _{50 \%}\) \(=\frac{3 \ln 10}{\ln 2} \times 1\) \(=\frac{3 \times 2.3}{0.69}=10\)

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

સૂચિ \(I\) સાથે સૂચિ \(II\) ને જોડો.

સૂચિ \(I\) સંકીર્ણ	સૂચિ \(II\) \(CFSE(\Delta_0)\)
\(A\) \(\left[ Cu \left( NH _3\right)_6\right]^{2+}\)	\(I\) \(-0.6\)
\(B\) \(\left[\operatorname{Ti}\left( N _2 O \right)_6\right]^{3+}\)	\(II\) \(-2.0\)
\(C\) \(\left[ Fe ( CN )_6\right]^{3-}\)	\(III\) \(-1.2\)
\(D\) \(\left[ NiF _6\right]^{4-}\)	\(IV\) \(-0.4\)

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