Chemistry-

General

Easy

Question

# Consider the following reactions I and II,

I)

II)

Products 'X' and 'Y' are respectively:

- picric acid, styphnic acid
- styphnic acid, picric acid
- picric acid, benzoic acid
- picric acid, salicylic acid

## The correct answer is: picric acid, styphnic acid

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II)

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IV)

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### In the figure is shown Young’s double slit experiment. Q is the position of the first bright fringe on the right side of O. P is the 11^{th} fringe on the other side, as measured from Q. If the wavelength of the light used is , then will be equal to

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### When one of the slits of Young’s experiment is covered with a transparent sheet of thickness 4.8 mm, the central fringe shifts to a position originally occupied by the 30^{th} bright fringe. What should be the thickness of the sheet if the central fringe has to shift to the position occupied by 20^{th} bright fringe

### When one of the slits of Young’s experiment is covered with a transparent sheet of thickness 4.8 mm, the central fringe shifts to a position originally occupied by the 30^{th} bright fringe. What should be the thickness of the sheet if the central fringe has to shift to the position occupied by 20^{th} bright fringe

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### Figure here shows P and Q as two equally intense coherent sources emitting radiations of wavelength 20 m. The separation PQ is 5.0 m and phase of P is ahead of the phase of Q by 90^{o}. A, B and C are three distant points of observation equidistant from the mid-point of PQ. The intensity of radiations at A, B, C will bear the ratio

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### Represent -7 + 3 on number line

When we add something to the given number, we don’t start counting the second number from zero. We count the places from the number itself. Any negative value means we move in left direction. Any positive value means we move in right direction.

### Represent -7 + 3 on number line

Maths-General

When we add something to the given number, we don’t start counting the second number from zero. We count the places from the number itself. Any negative value means we move in left direction. Any positive value means we move in right direction.

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Statement-II: If 0<a<b, then

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Statement-II: If 0<a<b, then

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Statement-II: If a>0, a>b, then

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Statement-II: If a>0, a>b, then

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Statement-II: If a>b then

### Statement-I:

Statement-II: If a>b then

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### Statement-I:

Statement-II: If a<b then

### Statement-I:

Statement-II: If a<b then

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### I:

II: Which of the following is true

### I:

II: Which of the following is true

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