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Maths-

General

Easy

Question

The function 2x³ – 9x² + 12x – 3 is increasing when x belongs to the interval

(- $\infty$ , 2) È (2, $\infty$ )
(- $\infty$ , 1) È (2, $\infty$ )
(- $\infty$ , 3) È (3, $\infty$ )
None

The correct answer is: None

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There is an error of 0.05cm in measuring the circumference 20cm of a circle. Then the percentage error in the area is

There is an error of 0.05cm in measuring the circumference 20cm of a circle. Then the percentage error in the area is

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In the curve y = a log(x² – a²) the sum of the lengths and the sub tangent at any point varies as

If the tangent at any point of the curve $square root of x plus square root of y equals square root of a$ meets the co-ordinate axes at A and B then OA + OB =

If the tangent at any point of the curve $square root of x plus square root of y equals square root of a$ meets the co-ordinate axes at A and B then OA + OB =

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The plane 2x -2y + z + 12 = 0 touches the sphere x² + y² + z² – 2x – 4y + 2z – 3 = 0 at the point

The plane 2x -2y + z + 12 = 0 touches the sphere x² + y² + z² – 2x – 4y + 2z – 3 = 0 at the point

$stack lim with x rightwards arrow 0 below invisible function application fraction numerator open parentheses a b close parentheses to the power of x end exponent minus a to the power of x end exponent minus b to the power of x end exponent plus 1 over denominator x to the power of 2 end exponent end fraction equals$

$stack lim with x rightwards arrow 0 below invisible function application fraction numerator open parentheses a b close parentheses to the power of x end exponent minus a to the power of x end exponent minus b to the power of x end exponent plus 1 over denominator x to the power of 2 end exponent end fraction equals$

$stack lim with x rightwards arrow infinity below invisible function application fraction numerator x over denominator square root of 4 x to the power of 2 end exponent plus 1 minus 1 end root end fraction equals$

$stack lim with x rightwards arrow infinity below invisible function application fraction numerator x over denominator square root of 4 x to the power of 2 end exponent plus 1 minus 1 end root end fraction equals$

parallel

The IUPAC name 'of is:

The IUPAC name 'of is:

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The IUPAC name of the compound
is:

The IUPAC name of the compound
is:

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The correct name of
is:

The correct name of
is:

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(R) g/mL is the unit of vapour density.

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The desiccants used for absorbing water during Liebig's method for estimation of carbon and hydrogen are:

The desiccants used for absorbing water during Liebig's method for estimation of carbon and hydrogen are:

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Formula which represents a simple ratio of atoms of different elements present in a molecule of the substance is called:

Formula which represents a simple ratio of atoms of different elements present in a molecule of the substance is called:

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$stack lim with n rightwards arrow infinity below invisible function application fraction numerator 1 plus 3 plus 5 plus. blank horizontal ellipsis. plus open parentheses 2 n minus 1 close parentheses over denominator 2 plus 4 plus 6 plus. blank. blank.. plus 2 n end fraction equals$

$stack lim with n rightwards arrow infinity below invisible function application fraction numerator 1 plus 3 plus 5 plus. blank horizontal ellipsis. plus open parentheses 2 n minus 1 close parentheses over denominator 2 plus 4 plus 6 plus. blank. blank.. plus 2 n end fraction equals$

$stack lim with x rightwards arrow 0 below invisible function application fraction numerator e to the power of 2 x end exponent minus 1 over denominator 3 x end fraction equals$

$stack lim with x rightwards arrow 0 below invisible function application fraction numerator e to the power of 2 x end exponent minus 1 over denominator 3 x end fraction equals$

parallel

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