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The best indicator for detection of end point in titration of a weak acid and a strong base is The best indicator for detection of end point in titration of a weak acid and a strong base is November 17, 2020 Category: Chapter 6 - Ionic Equilibrium (Level 1 and Level 2) , Chapter 7 [...]

A real image is formed by a convex lens. If we put a concave lens in contact with it, the combination again forms a real image. The new image : A real image is formed by a convex lens. If we put a concave lens in contact with it the combination again forms a real [...]

Two thin lenses of powers 2D and 3D are placed in contact. An object is placed at a distance of 30 cm from the combination The distance in cm of the image from the combination is Two thin lenses of powers 2D and 3D are placed in contact. An object is placed at a distance [...]

A convex lens of focal length 40 cm a concave lens of focal length 40 and a concave lens of focal length 15 cm are placed in contact. The power of this combination of are placed in contact. The power of this combination in diopters is A convex lens of glass has power P in [...]

Two similar plano – convex lenses are combined together in three different ways as shown in the adjoining figure. The ratio of the focal lengths in three cases will be Two similar plano - convex lenses are combined together in three different ways as shown in the adjoining figure. The ratio of the focal lengths [...]

Two plano-concave lenses (1 and 2) of glass of refractive index 1.5 have radii of curvature 25 cm and 20 cm. They are placed in contact with their curved surface towards each other and the space between them is filled with liquid of refractive index 4/3. Then the combination is A convex lens of glass [...]

A convex lens is in contact with concave lens. The magnitude of the ratio of their focal length is 3/2. Their equivalent focal length is 30 cm. What are their individual focal lengths in cm A convex lens is in contact with concave lens. The magnitude of the ratio of their focal length is 3/2. [...]

When 100 mL of 0.1 M NaCN solution is titrated with 0.1 M HCl solution the variation of pH of solution with volume of HCl added will be : When 100 mL of 0.1 M NaCN solution is titrated with 0.1 M HCl solution the variation of pH of solution with volume of HCl added [...]

The pH of the resultant solution of 20 mL of 0.1 M H2PO4 and 20 mL of 0.1 M Na3PO4 is: The pH of the resultant solution of 20 mL of 0.1 M H2PO4 and 20 mL of 0.1 M Na3PO4 is: November 17, 2020 Category: Chapter 6 - Ionic Equilibrium (Level 1 and Level [...]

which one of the following curves represents the graph of pH during titration of NaOH and HCl (aq).? which one of the following curves represents the graph of pH during titration of NaOH and HCl (aq).? November 17, 2020 Category: Chapter 6 - Ionic Equilibrium (Level 1 and Level 2) , Chapter 7 - Equilibrium [...]