Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
Method used for obtaining highly pure silicon used as a semiconductor material is (a) Oxidation (b) Electrochemical (c) Crystallization
12
Nov
Method used for obtaining highly pure silicon used as a semiconductor material is (a) Oxidation (b) Electrochemical (c) Crystallization Method used for obtaining highly pure silicon used as a semiconductor material is (a) Oxidation (b) Electrochemical (c) Crystallization November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Assertion : Coke and flux are used in smelting. Reason : The phenomenon in which ore is mixed with suitable flux and coke is heated to fusion is known as smelting.
12
Nov
Assertion : Coke and flux are used in smelting. Reason : The phenomenon in which ore is mixed with suitable flux and coke is heated to fusion is known as smelting. Assertion : Coke and flux are used in smelting. Reason : The phenomenon in which ore is mixed with suitable flux and coke is [...]
Hydro-metallurgical process of extraction of metals is based on (a) Complex formation (b) Hydrolysis (c) Dehydration (d) Dehydrogenation
12
Nov
Hydro-metallurgical process of extraction of metals is based on (a) Complex formation (b) Hydrolysis (c) Dehydration (d) Dehydrogenation Hydro-metallurgical process of extraction of metals is based on (a) Complex formation (b) Hydrolysis (c) Dehydration (d) Dehydrogenation November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The temperature of the slag zone in the metallurgy of iron using blast furnace is (a) 1500 – 1600 C (b) 400 – 700 C (c) 800 – 1000 C
12
Nov
The temperature of the slag zone in the metallurgy of iron using blast furnace is (a) 1500 – 1600 C (b) 400 – 700 C (c) 800 – 1000 C The temperature of the slag zone in the metallurgy of iron using blast furnace is (a) 1500 - 1600 C (b) 400 - 700 C [...]
Zone refining is a method to obtain (a) Very high temperature (b) Ultra pure Al (c) Ultra pure metals (d) Ultra pure oxides
12
Nov
Zone refining is a method to obtain (a) Very high temperature (b) Ultra pure Al (c) Ultra pure metals (d) Ultra pure oxides Zone refining is a method to obtain (a) Very high temperature (b) Ultra pure Al (c) Ultra pure metals (d) Ultra pure oxides November 12, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
A metal which is refined by poling is (a) Sodium (b) Blister copper (c) Zinc (d) Silver
12
Nov
A metal which is refined by poling is (a) Sodium (b) Blister copper (c) Zinc (d) Silver A metal which is refined by poling is (a) Sodium (b) Blister copper (c) Zinc (d) Silver November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
LetC be the capacitance of a capacitor discharging through a resistor R. Suppose t1 is the time taken for the energy stored in the capacitor to reduce to half its initial value and t2 is the time taken for the charge to reduce to one-fourth its initial value. Then the ratio t1/t2 will be
12
Nov
LetC be the capacitance of a capacitor discharging through a resistor R. Suppose t1 is the time taken for the energy stored in the capacitor to reduce to half its initial value and t2 is the time taken for the charge to reduce to one-fourth its initial value. Then the ratio t1/t2 will be The [...]
In electrolytic refining, the impure metal is used to make (a) Cathode (b) Anode (c) Electrolytic bath (d) None of these
12
Nov
In electrolytic refining, the impure metal is used to make (a) Cathode (b) Anode (c) Electrolytic bath (d) None of these In electrolytic refining the impure metal is used to make (a) Cathode (b) Anode (c) Electrolytic bath (d) None of these November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]
At what value of the resistance in the circuit shown in the figure will the total resistance between points A and B be independent of the number of cells? If R = ( root 3 +1)Ω, then the value of x will be ′′ ……”Ω.
12
Nov
At what value of the resistance in the circuit shown in the figure will the total resistance between points A and B be independent of the number of cells? If R = ( root 3 +1)Ω, then the value of x will be ′′ ……”Ω. At what value of the resistance in the circuit shown [...]
Silver obtained from argentiferrous lead containing lead impurity is purified by (a) Distillation (b) Froth floatation (c) Cupellation
12
Nov
Silver obtained from argentiferrous lead containing lead impurity is purified by (a) Distillation (b) Froth floatation (c) Cupellation Silver obtained from argentiferrous lead containing lead impurity is purified by (a) Distillation (b) Froth floatation (c) Cupellation November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,