Chemistry-
General
Easy

Question

Which acid on keeping for long time acquires brown colour?

  1. HF
  2. HCl
  3. HBr
  4. Hl

The correct answer is: Hl


    H I space b e i n g space l e a s t space s t a b l e d space e c o m p o s e s space w i t h space t i m e space t o space y i e l d space H subscript 2 plus I subscript 2. space T h e space I subscript 2 space end subscript i s space d i s s o l v e d space i n space H I space t o space d e v e l o p space b r o w n space c o l o u r space i n space s o l u t i o n.

    Related Questions to study

    General
    Maths-

    If A is a square matrix of order n, then the value of |adj A| is-

    If A is a square matrix of order n, then the value of |adj A| is-

    Maths-General
    General
    Maths-

    (adj AT) – (adj A)T equals-

    (adj AT) – (adj A)T equals-

    Maths-General
    General
    Maths-

    If A = open square brackets table row 1 cell negative 2 end cell 3 row 4 0 cell negative 1 end cell row cell negative 3 end cell 1 5 end table close square brackets , then (adj A)23 =

    If A = open square brackets table row 1 cell negative 2 end cell 3 row 4 0 cell negative 1 end cell row cell negative 3 end cell 1 5 end table close square brackets , then (adj A)23 =

    Maths-General
    parallel
    General
    maths-

    If A =open square brackets table row 1 2 3 row 2 3 4 row 0 0 2 end table close square brackets, then the value of adj (adj A) is-

    If A =open square brackets table row 1 2 3 row 2 3 4 row 0 0 2 end table close square brackets, then the value of adj (adj A) is-

    maths-General
    General
    maths-

    The number of values of theta in [0, 2straight pi] for which at least two roots are equal

    The number of values of theta in [0, 2straight pi] for which at least two roots are equal

    maths-General
    General
    Maths-

    Let A be a square matrix. Then which of the following is not a symmetric matrix -

    Let A be a square matrix. Then which of the following is not a symmetric matrix -

    Maths-General
    parallel
    General
    Maths-

    If A is a square matrix, then A– straight A to the power of straight prime is -

    If A is a square matrix, then A– straight A to the power of straight prime is -

    Maths-General
    General
    maths-

    If A is symmetric matrix and B is a skew- symmetric matrix, then for n element of N, false statement is -

    If A is symmetric matrix and B is a skew- symmetric matrix, then for n element of N, false statement is -

    maths-General
    General
    Maths-

    If A – straight A to the power of straight prime = 0, then straight A to the power of straight prime is -

    If A – straight A to the power of straight prime = 0, then straight A to the power of straight prime is -

    Maths-General
    parallel
    General
    Maths-

    If A is a matrix of order 3 × 4, then both ABT and BTA are defined if order of B is -

    If A is a matrix of order 3 × 4, then both ABT and BTA are defined if order of B is -

    Maths-General
    General
    maths-

    If A =open square brackets table row cell cos invisible function application alpha end cell cell sin invisible function application alpha end cell row cell negative sin invisible function application alpha end cell cell cos invisible function application alpha end cell end table close square brackets, then A A to the power of straight prime equals -

    If A =open square brackets table row cell cos invisible function application alpha end cell cell sin invisible function application alpha end cell row cell negative sin invisible function application alpha end cell cell cos invisible function application alpha end cell end table close square brackets, then A A to the power of straight prime equals -

    maths-General
    General
    Maths-

    Consider the cubic equation x cubed minus left parenthesis 1 plus cos space theta plus sin space theta right parenthesis x squared plus left parenthesis cos space theta sin space theta plus cos space theta plus sin space theta right parenthesis x minus sin space theta cos space theta equals 0 whose roots are x1, x2, and x3

    The value of x subscript 1 superscript 2 plus x subscript 2 superscript 2 plus x subscript 3 superscript 2 equals

    In this question, we have to given the cubic equation and its root x1,x2,x3 and we have to find the
    x 1 squared plus x 2 squared plus x 3 squared.Use, left parenthesis x 1 plus x 2 plus x 3 right parenthesis squared equals x 1 squared plus x 2 squared plus x 3 squared plus 2 left parenthesis x 1 x 2 plus x 2 x 3 plus x 3 x 1 right parenthesis and sum of roots is fraction numerator negative c over denominator a end fraction and product of roots is b/a.

    Consider the cubic equation x cubed minus left parenthesis 1 plus cos space theta plus sin space theta right parenthesis x squared plus left parenthesis cos space theta sin space theta plus cos space theta plus sin space theta right parenthesis x minus sin space theta cos space theta equals 0 whose roots are x1, x2, and x3

    The value of x subscript 1 superscript 2 plus x subscript 2 superscript 2 plus x subscript 3 superscript 2 equals

    Maths-General

    In this question, we have to given the cubic equation and its root x1,x2,x3 and we have to find the
    x 1 squared plus x 2 squared plus x 3 squared.Use, left parenthesis x 1 plus x 2 plus x 3 right parenthesis squared equals x 1 squared plus x 2 squared plus x 3 squared plus 2 left parenthesis x 1 x 2 plus x 2 x 3 plus x 3 x 1 right parenthesis and sum of roots is fraction numerator negative c over denominator a end fraction and product of roots is b/a.

    parallel
    General
    Maths-

    Let A be a square matrix. Then which of the following is not a symmetric matrix -

    Let A be a square matrix. Then which of the following is not a symmetric matrix -

    Maths-General
    General
    Maths-

    If A is a square matrix, then A– straight A to the power of straight prime is -

    If A is a square matrix, then A– straight A to the power of straight prime is -

    Maths-General
    General
    maths-

    If A is symmetric matrix and B is a skew- symmetric matrix, then for n element of N, false statement is -

    If A is symmetric matrix and B is a skew- symmetric matrix, then for n element of N, false statement is -

    maths-General
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.