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The stability of dihalides of Si, Ge, Sn and Pb increases steadily in the sequence (a) GeX2 < SiX2 < SnX2 < PbX2
18
Nov
The stability of dihalides of Si, Ge, Sn and Pb increases steadily in the sequence (a) GeX2 < SiX2 < SnX2 < PbX2 Ge Sn and Pb increases steadily in the sequence (a) GeX2 < SiX2 < SnX2 < PbX2 The stability of dihalides of Si November 18, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
In silicon dioxide (a) Each silicon atom is surrounded by four oxygen atoms and each oxygen atom is bonded to two silicon atoms
18
Nov
In silicon dioxide (a) Each silicon atom is surrounded by four oxygen atoms and each oxygen atom is bonded to two silicon atoms In silicon dioxide (a) Each silicon atom is surrounded by four oxygen atoms and each oxygen atom is bonded to two silicon atoms November 18, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
In the circuit shown in the figure, the switch S is in position 1 for a long time. Now the switch is thrown to position 2. Find the total heat developed in the circuit till the steady state is reached again.
18
Nov
In the circuit shown in the figure, the switch S is in position 1 for a long time. Now the switch is thrown to position 2. Find the total heat developed in the circuit till the steady state is reached again. In the circuit shown in the figure: the switch S is in position 1 [...]
Soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin buttons got converted
18
Nov
Soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin buttons got converted Soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin [...]
A total charge Q flows across a resistor R during a time interval T in such a way that the current versus time graph for 0 to T is like the loop of a sine curve in the range 0toπ. The total heat generated in the resistor is
18
Nov
A total charge Q flows across a resistor R during a time interval T in such a way that the current versus time graph for 0 to T is like the loop of a sine curve in the range 0toπ. The total heat generated in the resistor is all right bulbs are identical and all [...]
A resistance R=12 Ω is connected across a source of emf as shown in the figure. Its emf changes with time as shown in the graph. What is the heat developed in the heat developed in the resistance in the first four seconds ?
18
Nov
A resistance R=12 Ω is connected across a source of emf as shown in the figure. Its emf changes with time as shown in the graph. What is the heat developed in the heat developed in the resistance in the first four seconds ? all right bulbs are identical and all cells are ideal and [...]
A concave mirror for face viewing has focal length of 0.4 m. The distance at which you hold the mirror from your face in order to see your image upright with a magnification of 5 is :
18
Nov
A concave mirror for face viewing has focal length of 0.4 m. The distance at which you hold the mirror from your face in order to see your image upright with a magnification of 5 is : A concave mirror for face viewing has focal length of 0.4 m. The distance at which you hold [...]
A convex lens (of focal length 20 cm) and a concave mirror, having their principal axes along the same lines, are kept 80cm apart from each other. The concave mirror is to the right of the convex lens. When an object is kept at a distance of 30cm to the left of the convex lens, its image remains at the same position even if the concave minor is removed. The maximum distance of the object for which this concave mirror, by itself would produce a virtual image would be
18
Nov
A convex lens (of focal length 20 cm) and a concave mirror, having their principal axes along the same lines, are kept 80cm apart from each other. The concave mirror is to the right of the convex lens. When an object is kept at a distance of 30cm to the left of the convex lens, [...]
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A convex lens (of focal length 20 cm) and a concave mirror ,
are kept 80cm apart from each other. The concave mirror is to the right of the convex lens. When an object is kept at a distance of 30cm to the left of the convex lens ,
by itself would produce a virtual image would be ,
having their principal axes along the same lines ,
its image remains at the same position even if the concave minor is removed. The maximum distance of the object for which this concave mirror ,
Statement 1 : In an acid-basic titration involving a strong base and a weak acid, methyl orange can be used as an indicator. Statement 2 : Methyl red changes its colour in the pH range 4.2 to 6.3.
18
Nov
Statement 1 : In an acid-basic titration involving a strong base and a weak acid, methyl orange can be used as an indicator. Statement 2 : Methyl red changes its colour in the pH range 4.2 to 6.3. methyl orange can be used as an indicator. Statement 2 : Methyl red changes its colour in [...]
Statement 1 : When 0.1 m weak diprotic acid h2a dissociates with its dissociated constant ka1 = 10^3, then Ka2 = 10^8, then A^2- is almost equal to 10^3 M. Statement 2 : Since Ka2
18
Nov
Statement 1 : When 0.1 m weak diprotic acid h2a dissociates with its dissociated constant ka1 = 10^3, then Ka2 = 10^8, then A^2- is almost equal to 10^3 M. Statement 2 : Since Ka2 Statement 1 : When 0.1 m weak diprotic acid h2a dissociates with its dissociated constant ka1 = 10^3 then A^2- [...]