Chemistry-
General
Easy

Question

The smallest particle of an element or compound that has independent existence is.....

  1. Inert gas    
  2. Molecule    
  3. Atom    
  4. None    

The correct answer is: Molecule

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Which of the following is not matter ?

Which of the following is not matter ?

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The various forms of energy are considered as......

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Which of the following fibres is not obtained from plants ?

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The raw material which is used in padding the interior parts of automobiles is .....

The raw material which is used in padding the interior parts of automobiles is .....

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General
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If the independent variable x is changed to y, then the differential equation x fraction numerator d to the power of 2 end exponent y over denominator d x to the power of 2 end exponent end fraction plus left parenthesis fraction numerator d y over denominator d x end fraction right parenthesis to the power of 3 end exponent minus fraction numerator d y over denominator d x end fraction equals 0 is transformed to x fraction numerator d to the power of 2 end exponent x over denominator d y to the power of 2 end exponent end fraction plus left parenthesis fraction numerator d x over denominator d y end fraction right parenthesis to the power of 2 end exponent equals k, k being a number Then k equals

If the independent variable x is changed to y, then the differential equation x fraction numerator d to the power of 2 end exponent y over denominator d x to the power of 2 end exponent end fraction plus left parenthesis fraction numerator d y over denominator d x end fraction right parenthesis to the power of 3 end exponent minus fraction numerator d y over denominator d x end fraction equals 0 is transformed to x fraction numerator d to the power of 2 end exponent x over denominator d y to the power of 2 end exponent end fraction plus left parenthesis fraction numerator d x over denominator d y end fraction right parenthesis to the power of 2 end exponent equals k, k being a number Then k equals

maths-General
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The differential equation e to the power of y end exponent d x plus left parenthesis e to the power of y end exponent. x plus 2 y right parenthesis d y equals 0 has the particular solution y left parenthesis O right parenthesis equals 1 The value of x, when y equals 0, is

The differential equation e to the power of y end exponent d x plus left parenthesis e to the power of y end exponent. x plus 2 y right parenthesis d y equals 0 has the particular solution y left parenthesis O right parenthesis equals 1 The value of x, when y equals 0, is

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maths-

If a, b, c, are real numbers, and D equals open vertical bar table row a cell 1 plus 2 i end cell cell 3 minus 5 i end cell row cell 1 minus 2 i end cell b cell negative 7 minus 3 i end cell row cell 3 plus 5 i end cell cell negative 7 plus 3 i end cell c end table close vertical bar then D is

If a, b, c, are real numbers, and D equals open vertical bar table row a cell 1 plus 2 i end cell cell 3 minus 5 i end cell row cell 1 minus 2 i end cell b cell negative 7 minus 3 i end cell row cell 3 plus 5 i end cell cell negative 7 plus 3 i end cell c end table close vertical bar then D is

maths-General
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The value of lambda for which the system ofequations 2x-y-z=12, x-2y+z=-4, x+y+λz=4 has no solution is

Hence λ=2 for no solution.

The value of lambda for which the system ofequations 2x-y-z=12, x-2y+z=-4, x+y+λz=4 has no solution is

Maths-General

Hence λ=2 for no solution.

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maths-

The number of values of k for which the linear equations 4x+ky+2z=0 kx+4y+z=0 2x+2y+z=0 possess a non‐zero solution is :‐

The number of values of k for which the linear equations 4x+ky+2z=0 kx+4y+z=0 2x+2y+z=0 possess a non‐zero solution is :‐

maths-General
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If a subscript 1 end subscript comma a subscript 2 end subscript comma horizontal ellipsis horizontal ellipsis. a subscript n end subscript comma a subscript n plus 1 end subscript are in G P blank a n d blank a subscript i end subscript greater than 0 for all i comma then open vertical bar table row cell l o g invisible function application a subscript n end subscript end cell cell l o g invisible function application a subscript n plus 2 end subscript end cell cell l o g invisible function application a subscript n plus 4 end subscript end cell row cell l o g invisible function application a subscript n plus 6 end subscript end cell cell l o g invisible function application a subscript n plus 8 end subscript end cell cell l o g invisible function application a subscript n plus 10 end subscript end cell row cell l o g invisible function application a subscript n plus 12 end subscript end cell cell l o g invisible function application a subscript n plus 14 end subscript end cell cell l o g invisible function application a subscript n plus 16 end subscript end cell end table close vertical bar is equal to

If a subscript 1 end subscript comma a subscript 2 end subscript comma horizontal ellipsis horizontal ellipsis. a subscript n end subscript comma a subscript n plus 1 end subscript are in G P blank a n d blank a subscript i end subscript greater than 0 for all i comma then open vertical bar table row cell l o g invisible function application a subscript n end subscript end cell cell l o g invisible function application a subscript n plus 2 end subscript end cell cell l o g invisible function application a subscript n plus 4 end subscript end cell row cell l o g invisible function application a subscript n plus 6 end subscript end cell cell l o g invisible function application a subscript n plus 8 end subscript end cell cell l o g invisible function application a subscript n plus 10 end subscript end cell row cell l o g invisible function application a subscript n plus 12 end subscript end cell cell l o g invisible function application a subscript n plus 14 end subscript end cell cell l o g invisible function application a subscript n plus 16 end subscript end cell end table close vertical bar is equal to

maths-General
General
maths-

If a comma b comma c are real then the value of determinant open vertical bar table row cell a to the power of 2 end exponent plus 1 end cell cell a b end cell cell a c end cell row cell a b end cell cell b to the power of 2 end exponent plus 1 end cell cell b c end cell row cell a c end cell cell b c end cell cell c to the power of 2 end exponent plus 1 end cell end table close vertical bar equals 1 if

If a comma b comma c are real then the value of determinant open vertical bar table row cell a to the power of 2 end exponent plus 1 end cell cell a b end cell cell a c end cell row cell a b end cell cell b to the power of 2 end exponent plus 1 end cell cell b c end cell row cell a c end cell cell b c end cell cell c to the power of 2 end exponent plus 1 end cell end table close vertical bar equals 1 if

maths-General
General
Maths-

The system of linear equations x+y-z=6, x+2y-3z=14 and 2 x plus 5 y minus lambda z equals 9 left parenthesis lambda element of R right parenthesis has a unique solution if

Hence option B is the correct option

The system of linear equations x+y-z=6, x+2y-3z=14 and 2 x plus 5 y minus lambda z equals 9 left parenthesis lambda element of R right parenthesis has a unique solution if

Maths-General

Hence option B is the correct option

parallel

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