Everyday Science MCQs

5120 MCQs  (Page 316 of 512)

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AgCl dissolved with conc (2×10-2) Ksp will be__________________?
A. 3.6 x 10-6
B. 3.6 x 10-5
C. 7.2 x 10-6
D. 4 x 10-4
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Which of the following will not change the concentration of ammonia at the equilibrium ?
A. Increase of pressure
B. Increase of volume
C. Addition of catalyst
D. Decrease of temperature
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For a reaction involving only gases at 25?C the equilibrium constant can be expressed in terms of molarity Ke or partial pressure Kp. Which is true about the numerical value of Kp ?
A. Kc is generally greaer than kp
B. Kc is generally less than kp
C. Kc is generally equal to kp
D. Kc is equal to kp if the total moles of reactants and products are equal
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Which one of the following aqueous solutions will be basic ?
A. Naci
B. Na2so4
C. Na2co3
D. Fecl3
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Reaction which proceeds in both directions is called_______________?
A. Reversible
B. Irreversible
C. Spontaneous
D. Non-spontaneous
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Conversion of reactant into product in unit time is called________________?
A. Rate of forward reaction
B. Rate of backward reaction
C. Rate constant
D. Rate co-efficient
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The spreading of fragrance or scent in air is due to_______________?
A. Diffusion
B. Effusion
C. Attraction with air
D. Low dsensity
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The highest temperature at which a substance can exist as a liquid is called its______________?
A. Critical temperature
B. Standard temperature
C. Absolute temperature
D. Upper consulate temperature
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What do we call to sudden expansion of plasma ?
A. Avogadros law
B. Grahams law of diffusion
C. Joule thompson effect
D. Daltons law of partial pressure
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What will be the pressure of 1 mole of an ideal gas maintained at 300 K and 250cm3 volume ?
A. 98.5 atm
B. 96.7 atm
C. 95.8 atm
D. 97.1 atm
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Word of the Day
25 Jul
January
a preference or special liking for something; a bias in favour of something.
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