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Chemistry-

General

Easy

Question

The emf of the cell in which the following reaction $Zn invisible function application left parenthesis straight s right parenthesis plus Ni to the power of 2 plus end exponent left parenthesis straight a equals 0.1 right parenthesis Zn to the power of 2 plus end exponent left parenthesis straight a equals 1.0 right parenthesis plus Ni left parenthesis straight s right parenthesis$ occurs, is found to be 0.5105 V at 298 K. The standard e.m.f. of the cell is :

-0.5105 V
0.5400 V
0.4810 V
0.5696 V

The correct answer is:
0.5400 V

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Arrange following phenol in increasing order of $P k subscript a end subscript$ value -

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Arrange following phenol in increasing order of $P k subscript a end subscript$ value -

Chemistry-General

Arrange the Stability of following -
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Arrange the Stability of following -
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Chemistry-General

Rank the following radicals in order of Decreasing stability -
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Rank the following radicals in order of Decreasing stability -
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10th-Grade-Math---USA

Write the equation of the line.

Write the equation of the line.

10th-Grade-Math---USAGeneral

$sin to the power of 4 space theta plus cos to the power of 4 space theta equals 1 minus 1 half f left parenthesis theta right parenthesis text then end text f open parentheses pi over 4 close parentheses equals$

$sin to the power of 4 space theta plus cos to the power of 4 space theta equals 1 minus 1 half f left parenthesis theta right parenthesis text then end text f open parentheses pi over 4 close parentheses equals$

If $180 to the power of ring operator less than theta less than 270 to the power of 0 comma s i n space theta equals negative 3 divided by 5$ then $cos space theta divided by 2 equals$

If $180 to the power of ring operator less than theta less than 270 to the power of 0 comma s i n space theta equals negative 3 divided by 5$ then $cos space theta divided by 2 equals$

parallel

$x equals square root of fraction numerator 1 minus cos space theta over denominator 1 plus cos space theta end fraction end root not stretchy rightwards double arrow fraction numerator 2 x over denominator 1 minus x squared end fraction equals$

$x equals square root of fraction numerator 1 minus cos space theta over denominator 1 plus cos space theta end fraction end root not stretchy rightwards double arrow fraction numerator 2 x over denominator 1 minus x squared end fraction equals$

$cos space theta equals 1 half open parentheses a plus 1 over a close parentheses text then end text cos text end text 3 theta equals K open parentheses a cubed plus 1 over a cubed close parentheses$ where is equal to

$cos space theta equals 1 half open parentheses a plus 1 over a close parentheses text then end text cos text end text 3 theta equals K open parentheses a cubed plus 1 over a cubed close parentheses$ where is equal to

$4 s i n cubed space 75 to the power of ring operator minus 3 c o s space 15 to the power of ring operator equals$

$4 s i n cubed space 75 to the power of ring operator minus 3 c o s space 15 to the power of ring operator equals$

parallel

$fraction numerator cos space A minus cos space 3 A over denominator cos space A end fraction plus fraction numerator sin begin display style space end style A plus sin space 3 A over denominator sin begin display style space end style A end fraction equals$

$fraction numerator cos space A minus cos space 3 A over denominator cos space A end fraction plus fraction numerator sin begin display style space end style A plus sin space 3 A over denominator sin begin display style space end style A end fraction equals$

which of the following is rational number

which of the following is rational number

$fraction numerator 1 minus tan squared space 71 divided by 2 to the power of ring operator over denominator 2 tan space 7 1 half to the power of ring operator end fraction equals$

$fraction numerator 1 minus tan squared space 71 divided by 2 to the power of ring operator over denominator 2 tan space 7 1 half to the power of ring operator end fraction equals$

parallel

$fraction numerator sin space theta minus sin space 2 theta over denominator 1 minus cos space theta plus cos space 2 theta end fraction equals$

$fraction numerator sin space theta minus sin space 2 theta over denominator 1 minus cos space theta plus cos space 2 theta end fraction equals$

$cos space 36 to the power of ring operator minus cos space 72 to the power of ring operator equals$

$cos space 36 to the power of ring operator minus cos space 72 to the power of ring operator equals$

$fraction numerator sin space x over denominator sin space x divided by 8 end fraction equals$

$fraction numerator sin space x over denominator sin space x divided by 8 end fraction equals$

parallel

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