Everyday Science MCQs

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When a graph is plotted between 1/T on X-axis and log k on y-axis a straight line is obtained with a negative slope which has two end in__________________?
A. I and ii quadrant
B. Ii and iii quadrant
C. Iii and iv quadrant
D. Ii and iv quadrant
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Rate of reaction when concentration of reactants are taken as unity is called_________________?
A. Arrhenius constant
B. Molecularity
C. Specific rate constant
D. Ideal rate constant
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Which order of reaction obeys the relation t1/2 = 1/Ka____________________?
A. First order
B. Second order
C. Third order
D. Zero order
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Biocatalytical proteins are_________________?
A. Enzymes
B. Substrate
C. Lipids
D. Any of above
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An enzyme has its specificity due to________________?
A. Substrate
B. Structure
C. Temperature
D. Pressure
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A substance which increases the reactivity of enzyme is called_________________?
A. Promoters
B. Inhibitors
C. Stimulators
D. Non-activators
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When the reaction completes in more than one steps rate of reaction will be determined by________________?
A. Fast step
B. Slowest step
C. All steps
D. Molecularity of the reaction
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Energy of activation for backward reaction is less than forward reaction for ___________ reactio?
A. Endothermic
B. Exothermic
C. Moderate
D. Fast
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Which statement is incorrect about catalyst___________________?
A. It is used in smaller amount
B. Decrease activation energy
C. Specific in action
D. It affects specific rate constant
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Which of the following type of reaction is 3rd order reaction_________________?
A. 2n2o5 = 2n2o4 + o3
B. No + o3 ? no2 + o2
C. 2fecl3 + 6ki ? 2fei2 + 6kcl + i2
D. None of these
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Word of the Day
25 Jul
January
a preference or special liking for something; a bias in favour of something.
2021:00:00

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