Question Answers

The number of unpaired electrons in carbon atom is (a) One (b) Two (c) Three (d) Four The number of unpaired electrons in carbon atom is (a) One (b) Two (c) Three (d) Four November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

A capacitor of capacitance 10mF is charged up a potential difference of 2V and then the cell is removed. Now it is connected to a cell of emf4V and is charged fully. In both cases the polarities of the two cells are in the same directions. Total heat produced in the second charging process is [...]

In the diagrams, all right bulbs are identical , and all cells are ideal and identical . In which circuit ( a, b, c , d ) will the bulbs be dimmest ? all right bulbs are identical and all cells are ideal and identical . In which circuit ( a B C d ) [...]

In the preparation of amorphous silicon, HF acid is used to remove (a) Mg (b) SiO2 (c) Si (d) None of these HF acid is used to remove (a) Mg (b) SiO2 (c) Si (d) None of these In the preparation of amorphous silicon November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]

A battery is supplying power to a tape recorder by cable of resistance of 0.02 ohm. If the battery is generating 50 W power at 5 V , then the power received by the tape recorder is A battery is supplying power to a tape recorder by cable of resistance of 0.02 ohm. If the [...]

Which of the following is insoluble in water (a) Na2CO3 (b) CaCO3 (c) ZnCO3 (d) Al2(CO3)3 Which of the following is insoluble in water (a) Na2CO3 (b) CaCO3 (c) ZnCO3 (d) Al2(CO3)3 November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Which of the following substances consists of only one element (a) Marble (b) Sand (c) Diamond (d) Glass Which of the following substances consists of only one element (a) Marble (b) Sand (c) Diamond (d) Glass November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

A 100 W bulb designed to operate on 100 V is to be connected axross a 500 V source. Find the resistance to be put in series so that bulb consumes 100 W only . A 100 W bulb designed to operate on 100 V is to be connected axross a 500 V source. Find [...]

Which sulphide is soluble in yellow ammonium sulphide (a) HgS (b) PbS (c) CdS (d) SnS Which sulphide is soluble in yellow ammonium sulphide (a) HgS (b) PbS (c) CdS (d) SnS November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Select the element which does not form double bond (a) Nitrogen (b) Sulphur (c) Silicon (d) Phosphorus Select the element which does not form double bond (a) Nitrogen (b) Sulphur (c) Silicon (d) Phosphorus November 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,