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Chemistry-

General

Easy

Question

Acetyl salicylic acid called aspirin is a pain killer with $p K subscript a end subscript$ = 2 If two tablets each of 0.09 g mass, containing aspirin are dissolved in 100 m solution Its pH will be:

0.5
1O
0.0
2.0

The correct answer is: 2.0

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Assuming compel. ionization witch will have maximum pH?

Assuming compel. ionization witch will have maximum pH?

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The solution set of $left parenthesis 5 plus 4 c o s invisible function application theta right parenthesis left parenthesis 2 c o s invisible function application theta plus 1 right parenthesis equals 0$ in the interval $left square bracket 0 , 2 pi right square bracket$ is

The solution set of $left parenthesis 5 plus 4 c o s invisible function application theta right parenthesis left parenthesis 2 c o s invisible function application theta plus 1 right parenthesis equals 0$ in the interval $left square bracket 0 , 2 pi right square bracket$ is

$text The general solution for end text theta text if end text sin invisible function application open parentheses 2 theta plus fraction numerator pi over denominator 6 end fraction close parentheses plus cos invisible function application open parentheses theta plus fraction numerator 5 pi over denominator 6 end fraction close parentheses equals 2 blank$ is

$text The general solution for end text theta text if end text sin invisible function application open parentheses 2 theta plus fraction numerator pi over denominator 6 end fraction close parentheses plus cos invisible function application open parentheses theta plus fraction numerator 5 pi over denominator 6 end fraction close parentheses equals 2 blank$ is

parallel

$text If end text t a n invisible function application m theta plus c o t invisible function application n theta equals 0 comma$ then the general value of $theta$ is

$text If end text t a n invisible function application m theta plus c o t invisible function application n theta equals 0 comma$ then the general value of $theta$ is

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Mean life of a radioactive sample is 100 s. Then its half-life (in minutes) is

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A cylinder of radius $r$ and thermal conductivity $K subscript 1 end subscript$ is surrounded by a cylindrical shell of linear radius $r$ and outer radius $2 r$ , whose thermal conductivity is $K subscript 2 end subscript.$ There is no loss of heat across cylindrical surfaces, when the ends of the combined system are maintained at temperatures $T subscript 1 end subscript a n d T subscript 2 end subscript$ . The effective thermal conductivity of the system, in the steady state is

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The efficiency of a Carnot engine is 50% and temperature of sink is 500 K. If temperature of source is kept constant and its efficiency raised to 60%, then the required temperature of sink will be

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The current through an ideal PN-junction shown in the following circuit diagram will be

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