Maths-

General

Easy

Question

# The area bounded by y=cos x, y=x+1 and y=0 in the second quadrant is

- 3/2 sq units
- 2 sq units
- 1 sq unit
- 1/2 sq units

## The correct answer is: 1/2 sq units

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Moment of inertia of the system about the centre of plane is given by

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### For the given uniform square lamina , whose centre is

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So, (due to symmetry)

And (due to symmetry)

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(i)

and

(ii)

From Eqs. (i) and (ii), we get

So,

So, (due to symmetry)

And (due to symmetry)

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### For the given uniform square lamina , whose centre is

physics-General

Let the each side of square lamina is .

So, (due to symmetry)

And (due to symmetry)

Now, according to theorem of perpendicular axis,

(i)

and

(ii)

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So,

So, (due to symmetry)

And (due to symmetry)

Now, according to theorem of perpendicular axis,

(i)

and

(ii)

From Eqs. (i) and (ii), we get

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Which undergoes Cannizaro’s reaction to give Z

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### Y is

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### For which of the following molecule significant m ¹ 0

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II)

III)

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-OH and -SH groups do not cancel their dipole moment

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I)

II)

III)

IV)

chemistry-General

-OH and -SH groups do not cancel their dipole moment

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### Which one of the following will be the major product when

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### The appropriate reagent (s) for the transformation

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is / are

chemistry-General

Transformation of C = O group into CH

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Refer to Comprehensive Review

### The most suitable reagent of r the conversion of RCH_{2}OH → RCHO is

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Refer to Comprehensive Review

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### Which alkali metal floats over cold water without any reaction?

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4, Na, k all are less denses them water among these first group Li is very less reactive

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### The radius of germanium () nuclide is measured to be twice the radius of . The number of nucleons in Ge are

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Radius ofnucleus is given by

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### The radius of germanium () nuclide is measured to be twice the radius of . The number of nucleons in Ge are

physics-General

Let radius of nucleus be . Then radius of germanium (Ge) nucleus will be.

Radius ofnucleus is given by

Hence,

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Radius ofnucleus is given by

Hence,

Thus, in germanium () nucleus number of nucleons is 72.