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If s is the charge per unit area on the surface of a conductor, then the electric field intensity at a point on the surface is a) left( frac{sigma }{{{varepsilon }_{0}}} ight) normal to surface b) left( frac{sigma }{2{{vareps ...
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α ≤ sin-1x + tan-1x + cos-1x ≤ β then a) α =0, β = π b) α =0, β = ~~frac{pi }{2} c) α = frac{pi }{2} , β =π d) None of these ...
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An ideal solution has equal mol-fractions of two volatile components A and B. In the vapour above the solution, the mol-fractions of A and B: a) Are both 0.50 b) Are equal but necessarily 0.50 c) Are not very likely to be equ ...
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The following is a graph plotted between the vapor pressure of two volatile liquids against their respective mole fractions  Which of the following combinations are correct? *Image* (1) When {{x}_{A}}=1~and~{{x}_{B}}=0,~then ...
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A binary liquid (AB) shows positive deviation from Raoult’s law when (1) {{p}_{A}}>p_{A}^{0}X_{A}^{liq}~and~{{p}_{A}}>p_{B}^{0}X_{B}^{liq} (2) Intermolecular forces: A-A,~B-B>A-B (3) ext{ }!!Delta!! ext{ }{{V}_{mix ...
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Two metal pieces having a potential difference of 800 V are 0.02 m apart horizontally. A particle of mass 1.96 X 10–15 kg is suspended in equilibrium between the plates. If e is the elementary charge, then charge on the par ...
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The chemical formula for Brown Ring test for nitrate ion is ...
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Which of the following statements regarding the extraction of metals is incorrect? ...
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Which of the following statements regarding hydrogen chloride gas is correct? ...
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A salt reacting with dil. H2SO4 gives a reddish brown gas. The salt is ...
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In the electrolysis of dil. Copper sulphate what are the ions that discharge in the electrodes? ...
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In anodization of aluminium the anode is ...
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The head of the safety match contains a mixture of ...
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Vertices of a figure are (– 2, 2); (– 2, – 1); (3, –1); (3, 2), it is a ...
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Thirty men take 20 days to complete a job working 9 hours a day. How many hour a day should 40 men work to complete the job? ...
