Question

The noble gas used in atomic reactor ,is

- Krypton
- Oxygen
- Neon
- Helium

## The correct answer is: Helium

In atomic reactors, helium gas is used. It is also used in filling lighter air-crafts such as air ships weather balloons etc.

### Related Questions to study

### Which compound does not give on heating?

### Which compound does not give on heating?

In the interval the equation has

In this question, we have to find type of solution, here, we know if then we can take antilog, b = c^{a}, and cos^{2} θ = 1 – 2 sin^{2} θ . Remember these terms and find the solution easily.

In the interval the equation has

In this question, we have to find type of solution, here, we know if then we can take antilog, b = c^{a}, and cos^{2} θ = 1 – 2 sin^{2} θ . Remember these terms and find the solution easily.

### If ,then

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### If ,then

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Number of solutions of the equation in the interval [0, 2] is :

Number of solutions of the equation in the interval [0, 2] is :

### If ,then

In this question, we have given equation, where we have to find where the θ belongs. For all value of sin θ cos θ = so θ always lies between ( 0 , ) .

### If ,then

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### If

### If

The most general solution of the equations is

The most general solution of the equations is

The general solution of the equation, is

The general solution of the equation, is

The most general solution of cot = and cosec = – 2 is :

In this question, we have given cotθ = -√3 and cosecθ = -2. Where θ for both is -π/6 and then write the general solution.

The most general solution of cot = and cosec = – 2 is :

In this question, we have given cotθ = -√3 and cosecθ = -2. Where θ for both is -π/6 and then write the general solution.

### Let S = The sun of all distinct solution of the equation

### Let S = The sun of all distinct solution of the equation

### A wave motion has the function The graph in figure shows how the displacement at a fixed point varies with time Which one of the labelled points shows a displacement equal to that at the position at time

### A wave motion has the function The graph in figure shows how the displacement at a fixed point varies with time Which one of the labelled points shows a displacement equal to that at the position at time

### For , the equation has

### For , the equation has

### Which of the following pairs of compounds are functional isomers?

### Which of the following pairs of compounds are functional isomers?

### Let be such that and Then cannot satisfy

In this question we have to find the the which region ϕ cannot satisfy. In this question more than one option is correct. Here firstly solve the given equation. Remember that, , tan x + cot x = .

### Let be such that and Then cannot satisfy

In this question we have to find the the which region ϕ cannot satisfy. In this question more than one option is correct. Here firstly solve the given equation. Remember that, , tan x + cot x = .

The number of all possible values of , where 0< < , which the system of equations has a solution with , is

The number of all possible values of , where 0< < , which the system of equations has a solution with , is