Question Answers

Write ‘True’ or ‘False’ and justify your answer in each of the following: cos θ =a^2 + b^2/2ab where a and b are two distinct numbers such that ab > 0. Write ‘True’ or ‘False’ and justify your answer in each of the following: cos θ =a^2 + b^2/2ab where a and b are two [...]

Which is not oxidized by MnO2 (a) F (b) Cl (c) I2 (d) I Which is not oxidized by MnO2 (a) F (b) Cl (c) I2 (d) I November 25, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Write ‘True’ or ‘False’ and justify your answer in each of the following: The value of 2sinθ can be a + 1/a , where a is a positive number, and a≠ 1. and a≠ 1. where a is a positive number Write ‘True’ or ‘False’ and justify your answer in each of the following: The [...]

To purify fluorine gas, fumes of HF are removed by (a) Solid NaF (b) H2 gas (c) Solid KHF2 (d) None of these fumes of HF are removed by (a) Solid NaF (b) H2 gas (c) Solid KHF2 (d) None of these To purify fluorine gas November 25, 2020 Category: Uncategorised (JEE Advanced Physics by [...]

Write ‘True’ or ‘False’ and justify your answer in each of the following: If a man standing on a platform 3 metres above the surface of a lake observes a cloud and its reflection in the lake, then the angle of elevation of the cloud is equal to the angle of depression of its reflection. [...]

Write ‘True’ or ‘False’ and justify your answer in each of the following: If the length of the shadow of a tower is increasing, then the angle of elevation of the sun is also increasing. then the angle of elevation of the sun is also increasing. Write ‘True’ or ‘False’ and justify your answer in [...]

With cold and dilute sodium hydroxide fluorine reacts to give (a) NaF and OF2 (b) NaF + O3 (c) O2 and O3 With cold and dilute sodium hydroxide fluorine reacts to give (a) NaF and OF2 (b) NaF + O3 (c) O2 and O3 November 25, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]

Identify the incorrect statement among the following (a) Ozone reacts with SO2 to give SO3 (b) Silicon reacts with NaOH(aq) in the presence of air to give Na2SiO3 and H2O Identify the incorrect statement among the following (a) Ozone reacts with SO2 to give SO3 (b) Silicon reacts with NaOH(aq) in the presence of air [...]

Write ‘True’ or ‘False’ and justify your answer in each of the following: (tan θ + 2) (2 tan θ + 1) = 5 tan θ + sec^2θ . Write ‘True’ or ‘False’ and justify your answer in each of the following: (tan θ + 2) (2 tan θ + 1) = 5 tan θ [...]

What products are expected from the disproportionation reaction of hypochlorous acid (a) HClO3 and Cl2O (b) HClO2 and HClO4 What products are expected from the disproportionation reaction of hypochlorous acid (a) HClO3 and Cl2O (b) HClO2 and HClO4 November 25, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,