Question Answers

Three-point charges 1C,2C, and 3C are placed at the corners of an equilateral triangle of side 1m. The work required to move these charges to the corners of a smaller equilateral triangle of side 0.5m shown in the fig 2C and 3C are placed at the corners of an equilateral triangle of side 1m. The [...]

Zinc reacts with hot and concentrated H2SO4 to give (a) H2 (b) SO2 (c) SO3 (d) H2S Zinc reacts with hot and concentrated H2SO4 to give (a) H2 (b) SO2 (c) SO3 (d) H2S December 1, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Two equal charges q are placed at a distance 2a and a third charge −2q is placed at the midpoint. The potential energy of the system is Two equal charges q are placed at a distance 2a and a third charge −2q is placed at the midpoint. The potential energy of the system is December [...]

Two equal positive charges are kept at points A and B. The electric potential at the points between A and B (excluding these points ) is studied while moving from A to b. The potential Two equal positive charges are kept at points A and B. The electric potential at the points between A and [...]

Two fixed charges `-2 Q ` and `Q` are located at the points with coordinates ( -3 a, 0) and (+3 a, 0) in the ` X- Y` plane . The locus of all the points in the ` X-Y` plane where the electric potential due to the two charges is zero is a 0) [...]

The colour of zinc sulphide is (a) White (b) Black (c) Brown (d) Red The colour of zinc sulphide is (a) White (b) Black (c) Brown (d) Red December 1, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

The valency of phosphorus in H3PO4 is (a) 2 (b) 5 (c) 4 (d) 1 The valency of phosphorus in H3PO4 is (a) 2 (b) 5 (c) 4 (d) 1 December 1, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Hot and conc. nitric acid when reacts with copper, the gas obtained is (a) N2 (b) Nitrous oxide (c) NO (d) NO2 Hot and conc. nitric acid when reacts with copper the gas obtained is (a) N2 (b) Nitrous oxide (c) NO (d) NO2 December 1, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]

Which of the following metal forms an amphoteric oxide (a) Ca (b) Fe (c) Cu (d) Zn Which of the following metal forms an amphoteric oxide (a) Ca (b) Fe (c) Cu (d) Zn December 1, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Which of the following substances has gaint covalent structure (a) Iodine crystal (b) Solid CO2 (c) Silica (d) White phosphorus Which of the following substances has gaint covalent structure (a) Iodine crystal (b) Solid CO2 (c) Silica (d) White phosphorus December 1, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,