Question Answers
Sahay Sir > Question Answers
A man places a chain of mass ′m′ and length ′l′ on a table slowly. Initially, the lower end of the chain just touches the table. The man drops the chain when half of the chain is in the vertical position. Then work done by the man in this process is?
27
Nov
A man places a chain of mass ′m′ and length ′l′ on a table slowly. Initially, the lower end of the chain just touches the table. The man drops the chain when half of the chain is in the vertical position. Then work done by the man in this process is? A man places a [...]
A particle of mass m moves along a circular path of radius r with a centripetal acceleration an changing with time t as an=kt2, where k is a positive constant. The average power developed by all the forces acting on the particle during the first t0 seconds is.
27
Nov
A particle of mass m moves along a circular path of radius r with a centripetal acceleration an changing with time t as an=kt2, where k is a positive constant. The average power developed by all the forces acting on the particle during the first t0 seconds is. A particle of mass m moves along [...]
The alkali metal that reacts with nitrogen directly to form nitride is (a) Li (b) Na (c) K (d) Rb
27
Nov
The alkali metal that reacts with nitrogen directly to form nitride is (a) Li (b) Na (c) K (d) Rb The alkali metal that reacts with nitrogen directly to form nitride is (a) Li (b) Na (c) K (d) Rb November 27, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The H – spectrum show (a) Heisenberg’s uncertainty principle (b) Diffraction (c) Polarisation (d) presence of quantised energy level
27
Nov
The H – spectrum show (a) Heisenberg’s uncertainty principle (b) Diffraction (c) Polarisation (d) presence of quantised energy level The H - spectrum show (a) Heisenberg's uncertainty principle (b) Diffraction (c) Polarisation (d) presence of quantised energy level November 27, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
By the action of hot conc. H2SO4, phosphorus changes to (a) Phosphoric acid (b) Orthophosphoric acid (c) Metaphosphoric acid
27
Nov
By the action of hot conc. H2SO4, phosphorus changes to (a) Phosphoric acid (b) Orthophosphoric acid (c) Metaphosphoric acid By the action of hot conc. H2SO4 phosphorus changes to (a) Phosphoric acid (b) Orthophosphoric acid (c) Metaphosphoric acid November 27, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
When sulphur is boiled with Na2SO3 solution, the compound formed is (a) Sodium sulphide (b) Sodium sulphate (c) Sodium persulphate
27
Nov
When sulphur is boiled with Na2SO3 solution, the compound formed is (a) Sodium sulphide (b) Sodium sulphate (c) Sodium persulphate the compound formed is (a) Sodium sulphide (b) Sodium sulphate (c) Sodium persulphate When sulphur is boiled with Na2SO3 solution November 27, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
What is the maximum no. of emission lines obtained when the exited electrons of a hydrogen atom in n = 5 drop to ground state
27
Nov
What is the maximum no. of emission lines obtained when the exited electrons of a hydrogen atom in n = 5 drop to ground state What is the maximum no. of emission lines obtained when the exited electrons of a hydrogen atom in n = 5 drop to ground state November 27, 2020 Category: Uncategorised [...]
There is no S – S bond in (a) S2O4 2- (b) S2O5 2- (c) S2O3 2- (d) S2O7 2-
27
Nov
There is no S – S bond in (a) S2O4 2- (b) S2O5 2- (c) S2O3 2- (d) S2O7 2- There is no S - S bond in (a) S2O4 2- (b) S2O5 2- (c) S2O3 2- (d) S2O7 2- November 27, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
What is the energy ( in eV ) required to excite the electron from n = 1 to n = 2 state in hydrogen atom ?
27
Nov
What is the energy ( in eV ) required to excite the electron from n = 1 to n = 2 state in hydrogen atom ? What is the energy ( in eV ) required to excite the electron from n = 1 to n = 2 state in hydrogen atom ? November 27, 2020 [...]
Which compound acts as an oxidising as well as reducing agent (a) SO2 (b) MnO2 (c) Al2O3 (d) CrO3
27
Nov
Which compound acts as an oxidising as well as reducing agent (a) SO2 (b) MnO2 (c) Al2O3 (d) CrO3 Which compound acts as an oxidising as well as reducing agent (a) SO2 (b) MnO2 (c) Al2O3 (d) CrO3 November 27, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,