Chemistry-

General

Easy

Question

# Which one of the following metals will give blue ash when its salt is heated with solid and on a charcoal piece

## The correct answer is:

### is formed which is blue. Follow cobalt nitrate-charcoal test.

### Related Questions to study

physics-

### An electron in the ground state of hydrogen atom is revolving in anticlockwise direction in the circular orbit of radius R The atom is placed in a uniform magnetic induction B such that the plane normal of electron orbit makes an angle 30^{0} with B, as shown in figure The torque experienced by electron will be

### An electron in the ground state of hydrogen atom is revolving in anticlockwise direction in the circular orbit of radius R The atom is placed in a uniform magnetic induction B such that the plane normal of electron orbit makes an angle 30^{0} with B, as shown in figure The torque experienced by electron will be

physics-General

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### In hydrogen atom, the area enclosed by n^{th} orbit is A_{n} The graph between and log_{n} will be

### In hydrogen atom, the area enclosed by n^{th} orbit is A_{n} The graph between and log_{n} will be

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### In hydrogen atom, the radius of n^{th} Bohr orbit is V_{n} The graph between and will be

### In hydrogen atom, the radius of n^{th} Bohr orbit is V_{n} The graph between and will be

physics-General

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### In a Bohr atom the electron is replaced by a particle of mass 150 times the mass of the electron and the same charge If a_{0} is the radius of the first Bohr orbit of the orbital atom, then that of the new atom will be

### In a Bohr atom the electron is replaced by a particle of mass 150 times the mass of the electron and the same charge If a_{0} is the radius of the first Bohr orbit of the orbital atom, then that of the new atom will be

physics-General

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### The figure shows energy levels of a certain atom, when the system moves from level 2E is emitted The to E, a photon of wavelength wavelength of photon produced during its transition from level 4/3 E to E level is:

### The figure shows energy levels of a certain atom, when the system moves from level 2E is emitted The to E, a photon of wavelength wavelength of photon produced during its transition from level 4/3 E to E level is:

physics-General

physics-

### The ionisation energy of atom in ground state is :

### The ionisation energy of atom in ground state is :

physics-General

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### A cylindrical solid of length L and radius a is having varying resistivity given by r = r0 x where r0 is a positive constant and x is measured from left end of solid. The cell shown in the figure is having emf V and negligible internal resistance. The electric field as a function of x is best described by :

### A cylindrical solid of length L and radius a is having varying resistivity given by r = r0 x where r0 is a positive constant and x is measured from left end of solid. The cell shown in the figure is having emf V and negligible internal resistance. The electric field as a function of x is best described by :

physics-General

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### A charged oil drop falls with terminal velocity V_{0} in the absence of electric field An electric field E keeps it stationary The drop acquires additional charge q and starts moving upwards with velocity V_{0} The initial charge on the drop was

### A charged oil drop falls with terminal velocity V_{0} in the absence of electric field An electric field E keeps it stationary The drop acquires additional charge q and starts moving upwards with velocity V_{0} The initial charge on the drop was

physics-General

maths-

### if find the value of x in given figure.

### if find the value of x in given figure.

maths-General

maths-

### The number of positive integral solutions of the inequation is –

### The number of positive integral solutions of the inequation is –

maths-General

maths-

### Set of values of x satisfying the inequality is then 2a + b + c is equal to

### Set of values of x satisfying the inequality is then 2a + b + c is equal to

maths-General

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### Number of integral values of x for which the inequality log_{10} 0 holds true, is

### Number of integral values of x for which the inequality log_{10} 0 holds true, is

maths-General

maths-

### implies

### implies

maths-General

maths-

### log4 (2x2 + x + 1) – log^{2} (2x – 1) – tan

### log4 (2x2 + x + 1) – log^{2} (2x – 1) – tan

maths-General

maths-

### The solution set of the inequation log1/3 (x^{2} + x + 1) + 1 > 0 is

### The solution set of the inequation log1/3 (x^{2} + x + 1) + 1 > 0 is

maths-General