On which of the following properties does coagulating power of an ion depend ?
(1) The magnitude of the charge on the alone
(2) Size of the ion alone
(3) Both magnitude and sign of the charge the ion
(4) The sign of charge on the ion alone
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Which of the following is more effective in coagulating positively charged hydrated ferric oxide sol : (i) KCl, (ii)
[Hint : K3[Fe(CN)6]]
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On what factors does the resistance of a conductor depend
The resistance of a conductor depends: (i) on its length, (ii) on its area of cross-section, (iii) on the nature of its material and (iv) on the temperature of the conductor.
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How does the strength of the Magnetic field at the centre of a circular coil of a wire depend on:
(a) More the radius weaker the field. (b) Field strength is directly proportional to the number of turns in the coil.
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There is a small hole near the bottom of an open tank filled with a liquid. The speed of the water ejected does not depend on
(a) area of the hole (b) density of the liquid EXPLANATION: The velocity of the liquid coming out of a hole in a tank is given as V =√(2gh) where h is the...
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The change in frequency due to Doppler effect does not depend on (a) the speed of the source
(d) separation between the source and the observer. EXPLANATION: The apparent frequency due to the Doppler effect ν' = {V/(V-U)}*ν₀ or ν' = {(V+U)/V}*ν₀ depending upon the source moves towards the observer...
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A student is studying the properties of acetic acid. List two physical properties of acetic acid he observes.
Acetic acid is colourless liquid. It is miscible/ soluble in water. On adding a pinch of sodium hydrogen carbonate, Brisk effervescence is observed. Evolution of a colourless/ odourless gas.
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Which of the following (referred to a spherical mirror) do (does) not depend on whether the rays are paraxial or not ?
(a) Pole. (c) Radius of curvature. (d) Principal axis.
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The brightness producing capacity of a source (a) does not depend on its power (b) does not depend on the wavelength emitted
(c) depends on its power (d) depends on the wavelength emitted.
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Among the properties (A) reducing (B) oxidising (C) complexing, the set of properties shown by CN^– ion towards metal species is
(c) : CN– ions act both as reducing agent as well as good complexing agent.
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Classify the following properties as extensive and intensive properties: Molar heat capacity, temperature, enthalpy and volume.
Extensive properties : Enthalpy and volume. Intensive properties: Molar heat capacity, temperature.
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