Question Answers
Sahay Sir > Question Answers
An electric immersion heater of 1.08 kW is immersed in water. After it has reached a temperature of 10o0 degree C, how much time will be required to produce 100 g of steam ?
17
Nov
An electric immersion heater of 1.08 kW is immersed in water. After it has reached a temperature of 10o0 degree C, how much time will be required to produce 100 g of steam ? An electric immersion heater of 1.08 kW is immersed in water. After it has reached a temperature of 10o0 degree C [...]
Point out the incorrect statement regarding Be (Group – IIA) (a) It forms an ionic carbide (b) Its carbonate decomposes on heating
17
Nov
Point out the incorrect statement regarding Be (Group – IIA) (a) It forms an ionic carbide (b) Its carbonate decomposes on heating Point out the incorrect statement regarding Be (Group - IIA) (a) It forms an ionic carbide (b) Its carbonate decomposes on heating November 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
Which one of the following is the strongest base (a) Be(OH)2 (b) Mg(OH)2 (c) Al(OH)3 (d) Si(OH)4
17
Nov
Which one of the following is the strongest base (a) Be(OH)2 (b) Mg(OH)2 (c) Al(OH)3 (d) Si(OH)4 Which one of the following is the strongest base (a) Be(OH)2 (b) Mg(OH)2 (c) Al(OH)3 (d) Si(OH)4 November 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Mg burns in CO to produce (a) MgO2 (b) MgCO3 (c) MgO + CO (d) MgO + C
17
Nov
Mg burns in CO to produce (a) MgO2 (b) MgCO3 (c) MgO + CO (d) MgO + C Mg burns in CO to produce (a) MgO2 (b) MgCO3 (c) MgO + CO (d) MgO + C November 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The resistance in which the maximum heat is produced is given by ( figure )
17
Nov
The resistance in which the maximum heat is produced is given by ( figure ) The resistance in which the maximum heat is produced is given by ( figure ) November 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
An ideal gas is filled in a closed rigid and thermally insulated container. A coil of 1000 ohm resistor carrying current 1 A for 5 min supplies heat to the gas . The change in internal energy of the gas is
17
Nov
An ideal gas is filled in a closed rigid and thermally insulated container. A coil of 1000 ohm resistor carrying current 1 A for 5 min supplies heat to the gas . The change in internal energy of the gas is The operating temperature of the filament of lamp is 2000∘C. The temperature coefficient of [...]
The circuit shown in figure contains a battery , a rheostat, and two identical lamps. what will happen to the brightness of the lamps if the resistance of the rheostat is increased ?
17
Nov
The circuit shown in figure contains a battery , a rheostat, and two identical lamps. what will happen to the brightness of the lamps if the resistance of the rheostat is increased ? a rheostat and two identical lamps. what will happen to the brightness of the lamps if the resistance of the rheostat is [...]
Three similar light bulbs are connected to a constant voltage dc supply as shown in figure. Each bulb operates at normal brightnesand the ammeter (of negligible resistance ) registers a steady current . The filament of one of the bulbs breaks. what happens to the ammeter reading and to the brightness of the remaining bulbs ?
17
Nov
Three similar light bulbs are connected to a constant voltage dc supply as shown in figure. Each bulb operates at normal brightnesand the ammeter (of negligible resistance ) registers a steady current . The filament of one of the bulbs breaks. what happens to the ammeter reading and to the brightness of the remaining bulbs [...]
All bulbs in figure are identical. which bulb lights more brightly ?
17
Nov
All bulbs in figure are identical. which bulb lights more brightly ? All bulbs in figure are identical. which bulb lights more brightly ? November 17, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
An aqueous solution contains 0.10 M H2 S and 0.20 M HCl . If the equilibrium constants for the formation of HS− from H2S is 1.0×10^−7 and that of S2− from HS− ions is 1.2×10^−13 then the concentration of S2− ions in aqueous solution is
16
Nov
An aqueous solution contains 0.10 M H2 S and 0.20 M HCl . If the equilibrium constants for the formation of HS− from H2S is 1.0×10^−7 and that of S2− from HS− ions is 1.2×10^−13 then the concentration of S2− ions in aqueous solution is Two solids dissociate as follows A(s)↽−−⇀B(g) + C(g);Kp1 = x [...]