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Extraction of copper from copper pyrite (CuFeS2) involves (a) Crushing followed by concentration of the ore by froth flotation Extraction of copper from copper pyrite (CuFeS2) involves (a) Crushing followed by concentration of the ore by froth flotation December 3, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Fe 3+ is reduced to fe 2+ by using (a) H2O2 in presence of NaOH (c) H2O2 in presence of H2SO4 Fe 3+ is reduced to fe 2+ by using (a) H2O2 in presence of NaOH (c) H2O2 in presence of H2SO4 December 3, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]

The correct statement(s) about Cr 2 + and Mn 3+ is (are) (Atomic number of Cr = 24 and Mn = 25) The correct statement(s) about Cr 2 + and Mn 3+ is (are) (Atomic number of Cr = 24 and Mn = 25) December 3, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]

Which of the following hydrogen halides react(s) with AgNO3(aq) to give a precipitate that dissolves in Na2S2O3 (aq) (a) HCl (b) HF (c) HBr Which of the following hydrogen halides react(s) with AgNO3(aq) to give a precipitate that dissolves in Na2S2O3 (aq) (a) HCl (b) HF (c) HBr December 3, 2020 Category: Uncategorised (JEE Advanced [...]

Which of the following is/are soluble in ethanol (a) HgF2 (b) HgCl2 (c) HgBr2 Which of the following is/are soluble in ethanol (a) HgF2 (b) HgCl2 (c) HgBr2 December 3, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Which of the following statement(s) is (are) correct with reference to the ferrous and ferric ions (a) Fe 3+ gives brown colour with potassium ferricyanide Which of the following statement(s) is (are) correct with reference to the ferrous and ferric ions (a) Fe 3+ gives brown colour with potassium ferricyanide December 3, 2020 Category: Uncategorised [...]

Addition of high proportions of manganese makes steel useful in making rails or railroads, because manganese (a) Gives hardness to steel Addition of high proportions of manganese makes steel useful in making rails or railroads because manganese (a) Gives hardness to steel December 3, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]

Which of the following alloys contain (s) Cu and Zn (a) Bronze (b) Brass (c) Gun metal (d) Type metal Which of the following alloys contain (s) Cu and Zn (a) Bronze (b) Brass (c) Gun metal (d) Type metal December 3, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

The aqueous solution of the following salts will be coloured in the case of (a) Zn(NO3)2 (b) LiNO3 (c) Co(NO3)2 (d) CrCl3 The aqueous solution of the following salts will be coloured in the case of (a) Zn(NO3)2 (b) LiNO3 (c) Co(NO3)2 (d) CrCl3 December 3, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]

Potassium manganate (K2MnO4) is formed when (a) Chlorine is passed into aqueous KMnO4 solution Potassium manganate (K2MnO4) is formed when (a) Chlorine is passed into aqueous KMnO4 solution December 3, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,