Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A battery of internal resistance 4 ohm is connected to teh network of the resistaor as shown in figure. IF teh maximum poer can be divided to the network , the magnitude of resistance in ohm should be
11
Nov
A battery of internal resistance 4 ohm is connected to teh network of the resistaor as shown in figure. IF teh maximum poer can be divided to the network , the magnitude of resistance in ohm should be A battery of internal resistance 4 ohm is connected to teh network of the resistaor as shown [...]
The following reactions take place in the blast furnace in the preparation of impure iron. Identify the reaction pertaining to the formation of the slag
11
Nov
The following reactions take place in the blast furnace in the preparation of impure iron. Identify the reaction pertaining to the formation of the slag The following reactions take place in the blast furnace in the preparation of impure iron. Identify the reaction pertaining to the formation of the slag November 11, 2020 Category: Uncategorised [...]
Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true
11
Nov
Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true about the advantage of roasting of sulphide ore before reduction is not true Which of the following statements November 11, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Assertion : Wolframite impurities are separated from cassiterite by electromagnetic separation. Reason : Cassiterite being magnetic is attracted by the magnet and forms a separate heap.
11
Nov
Assertion : Wolframite impurities are separated from cassiterite by electromagnetic separation. Reason : Cassiterite being magnetic is attracted by the magnet and forms a separate heap. Assertion : Wolframite impurities are separated from cassiterite by electromagnetic separation. Reason : Cassiterite being magnetic is attracted by the magnet and forms a separate heap. November 11, 2020 [...]
Assertion : Levigation is used for the separation of oxide ores from impurities. Reason : Ore particles are removed by washing in a current of water.
11
Nov
Assertion : Levigation is used for the separation of oxide ores from impurities. Reason : Ore particles are removed by washing in a current of water. Assertion : Levigation is used for the separation of oxide ores from impurities. Reason : Ore particles are removed by washing in a current of water. November 11, 2020 [...]
Assertion : Zinc is used and copper is not used in the recovery of Ag from the complex (Ag (CN)2)-. Reason : Zinc is a powerful reducing agent than copper.
11
Nov
Assertion : Zinc is used and copper is not used in the recovery of Ag from the complex (Ag (CN)2)-. Reason : Zinc is a powerful reducing agent than copper. Assertion : Zinc is used and copper is not used in the recovery of Ag from the complex (Ag (CN)2)-. Reason : Zinc is a [...]
Find the effective resistance between A and B . (1) 2 ohm (2) 1 ohm (3) 8/7 ohm (4) 7 ohm
11
Nov
Find the effective resistance between A and B . (1) 2 ohm (2) 1 ohm (3) 8/7 ohm (4) 7 ohm Find the effective resistance between A and B . (1) 2 ohm (2) 1 ohm (3) 8/7 ohm (4) 7 ohm November 11, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]
Assertion : Gold is recovered from its solution containing aurocyanide complex by adding zinc dust. Reason : Zinc is more electropositive than gold.
11
Nov
Assertion : Gold is recovered from its solution containing aurocyanide complex by adding zinc dust. Reason : Zinc is more electropositive than gold. Assertion : Gold is recovered from its solution containing aurocyanide complex by adding zinc dust. Reason : Zinc is more electropositive than gold. November 11, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
Cyanide process is used in the extraction of (a) Au (b) Ag (c) Both (a) and (b) (d) Cu
11
Nov
Cyanide process is used in the extraction of (a) Au (b) Ag (c) Both (a) and (b) (d) Cu Cyanide process is used in the extraction of (a) Au (b) Ag (c) Both (a) and (b) (d) Cu November 11, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Which of the following ore is best concentrated by froth-floatation method (a) Galena (b) Cassiterite (c) Magnetite (d) Malachite
11
Nov
Which of the following ore is best concentrated by froth-floatation method (a) Galena (b) Cassiterite (c) Magnetite (d) Malachite Which of the following ore is best concentrated by froth-floatation method (a) Galena (b) Cassiterite (c) Magnetite (d) Malachite November 11, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,