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Among the following metals how many metals are extracted by self reduction method from their respective ores. (Give total number) Hg, Zn, Cu, Al, Mg, Pb, Fe , Sn
12
Nov
Among the following metals how many metals are extracted by self reduction method from their respective ores. (Give total number) Hg, Zn, Cu, Al, Mg, Pb, Fe , Sn AL Among the following metals how many metals are extracted by self reduction method from their respective ores. (Give total number) Hg Cu Fe Mg PB [...]
According to the following diagram, A reduces BO2 when the temperature is (a) 1400 C
12
Nov
According to the following diagram, A reduces BO2 when the temperature is (a) 1400 C A reduces BO2 when the temperature is (a) 1400 C According to the following diagram November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Among the reactions (A) – (D) the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are(a) CaO + SiO2 to CaSiO3
12
Nov
Among the reactions (A) – (D) the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are(a) CaO + SiO2 to CaSiO3 Among the reactions (A) - (D) the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are(a) CaO + SiO2 to CaSiO3 November [...]
The refining method used when the metal and the impurities have low and high melting temperatures, respectively, is
12
Nov
The refining method used when the metal and the impurities have low and high melting temperatures, respectively, is is respectively The refining method used when the metal and the impurities have low and high melting temperatures November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Calamine, malachite, magnetite and cryolite, respectively are (a) ZnSO4, CuCO3, Fe2O3, AlF3
12
Nov
Calamine, malachite, magnetite and cryolite, respectively are (a) ZnSO4, CuCO3, Fe2O3, AlF3 AlF3 Calamine CuCO3 Fe2O3 magnetite and cryolite malachite respectively are (a) ZnSO4 November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Tags:
AlF3 ,
Calamine ,
CuCO3 ,
Fe2O3 ,
magnetite and cryolite ,
malachite ,
respectively are (a) ZnSO4 ,
The correct statement is (a) Leaching of bauxite using concentrated NaOH solution gives sodium aluminate and sodium silicate (b) The blistered appearance of copper
12
Nov
The correct statement is (a) Leaching of bauxite using concentrated NaOH solution gives sodium aluminate and sodium silicate (b) The blistered appearance of copper The correct statement is (a) Leaching of bauxite using concentrated NaOH solution gives sodium aluminate and sodium silicate (b) The blistered appearance of copper November 12, 2020 Category: Uncategorised (JEE Advanced [...]
A stationary source is emitting sound at a fixed frequency f0 , which is reflected by two cars approaching the source. The difference between the frequencies of sound reflected from the cars is 1.2% of f0 . What is the difference in the speeds of the cars (in km per hour) to the nearest integer ? The cars are moving at constant speeds much smaller than the speed of sound which is 330ms−1 .
12
Nov
A stationary source is emitting sound at a fixed frequency f0 , which is reflected by two cars approaching the source. The difference between the frequencies of sound reflected from the cars is 1.2% of f0 . What is the difference in the speeds of the cars (in km per hour) to the nearest integer [...]
The basic structural unit of feldspar, zeolites, mica and asbestos is (SiO3) 2-
12
Nov
The basic structural unit of feldspar, zeolites, mica and asbestos is (SiO3) 2- mica and asbestos is (SiO3) 2- The basic structural unit of feldspar zeolites November 12, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Two tuning forks of frequencies 250 Hz and 256 Hz produce beats. If a maximum is produced just now, after how much time the minima is produced at the same plane –
12
Nov
Two tuning forks of frequencies 250 Hz and 256 Hz produce beats. If a maximum is produced just now, after how much time the minima is produced at the same plane – after how much time the minima is produced at the same plane - Two tuning forks of frequencies 250 Hz and 256 Hz [...]
The idea of froth floatation method came from a person X and this method is related to the process Y of ores. X and Y, respectively are
12
Nov
The idea of froth floatation method came from a person X and this method is related to the process Y of ores. X and Y, respectively are respectively are The idea of froth floatation method came from a person X and this method is related to the process Y of ores. X and Y November [...]