Chemistry-
General
Easy

Question

In the process of extraction of gold, Roasted gold ore plus CN to the power of minus plus straight H subscript 2 straight O not stretchy ⟶ with straight O subscript 2 on top left square bracket x right square bracket plus OH to the power of minus semicolon left square bracket x right square bracket plus Z n not stretchy rightwards arrow left square bracket y right square bracket plus A u  [x] and [y] are:

  1. left square bracket x right square bracket equals open square brackets A u left parenthesis C N right parenthesis subscript 2 close square brackets to the power of minus comma left square bracket y right square bracket equals open square brackets Z n left parenthesis C N right parenthesis subscript 4 close square brackets to the power of 2 minus end exponent
  2. left square bracket x right square bracket equals open square brackets A u left parenthesis C N right parenthesis subscript 4 close square brackets to the power of 3 minus end exponent comma left square bracket y right square bracket equals open square brackets Zn invisible function application left parenthesis C N right parenthesis subscript 6 close square brackets to the power of 2 minus end exponent
  3. left square bracket x right square bracket equals open square brackets A u left parenthesis C N right parenthesis subscript 2 close square brackets to the power of minus comma left square bracket y right square bracket equals open square brackets Z n left parenthesis C N right parenthesis subscript 6 close square brackets to the power of 4
  4. left square bracket x right square bracket equals open square brackets A u left parenthesis C N right parenthesis subscript 4 close square brackets to the power of minus comma left square bracket y right square bracket equals open square brackets Zn invisible function application left parenthesis C N right parenthesis subscript 4 close square brackets to the power of 2 minus end exponent

The correct answer is: left square bracket x right square bracket equals open square brackets A u left parenthesis C N right parenthesis subscript 2 close square brackets to the power of minus comma left square bracket y right square bracket equals open square brackets Z n left parenthesis C N right parenthesis subscript 4 close square brackets to the power of 2 minus end exponent

Related Questions to study

General
chemistry-

Aqueous solution of F e S O subscript 4 end subscript gives test for both F e to the power of 2 plus end exponent and SO subscript 4 superscript 2 minus end superscript but after addition of excess of KCN, solution ceases to give test for F e to the power of 2 plus end exponent. This is due to the formation of

Aqueous solution of F e S O subscript 4 end subscript gives test for both F e to the power of 2 plus end exponent and SO subscript 4 superscript 2 minus end superscript but after addition of excess of KCN, solution ceases to give test for F e to the power of 2 plus end exponent. This is due to the formation of

chemistry-General
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physics-

A light ray I is incident on a plane mirror M. The mirror is rotated in the direction as shown in the figure by an arrow at frequency 9 divided by pi rps. The light reflected by the mirror is received on the wall W at a distance 10 m from the axis of rotation. When the angle of incidence becomes 37 to the power of ring operator end exponent the speed of the spot (a point) on the wall is:

A light ray I is incident on a plane mirror M. The mirror is rotated in the direction as shown in the figure by an arrow at frequency 9 divided by pi rps. The light reflected by the mirror is received on the wall W at a distance 10 m from the axis of rotation. When the angle of incidence becomes 37 to the power of ring operator end exponent the speed of the spot (a point) on the wall is:

physics-General
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A plano concave lens is placed on a paper on which a flower is drawn. How far above its actual position does the flower appear to be?

A plano concave lens is placed on a paper on which a flower is drawn. How far above its actual position does the flower appear to be?

physics-General
parallel
General
physics-

The figure shows a parallel slab of refractive index n subscript 2 end subscript which is surrounded by media of refractive indices n subscript 1 end subscript and n subscript 3 end subscript. Light is incident on the slab at angle of incidence theta left parenthesis not equal to 0 right parenthesis. The time taken by the ray to cross the slab is ' t subscript 1 end subscript blank to the power of ´ end exponent if incidence is from ' n subscript 1 end subscript ' and it is ' t subscript 2 end subscript ' if the incidence is from ' n subscript 3 end subscript '. Then assuming that n subscript 2 end subscript greater than n subscript 1 end subscript comma n subscript 2 end subscript greater than n subscript 3 end subscript and n subscript 3 end subscript greater than n subscript 1 end subscript, then value of t subscript 1 end subscript divided by t subscript 2 end subscript.

The figure shows a parallel slab of refractive index n subscript 2 end subscript which is surrounded by media of refractive indices n subscript 1 end subscript and n subscript 3 end subscript. Light is incident on the slab at angle of incidence theta left parenthesis not equal to 0 right parenthesis. The time taken by the ray to cross the slab is ' t subscript 1 end subscript blank to the power of ´ end exponent if incidence is from ' n subscript 1 end subscript ' and it is ' t subscript 2 end subscript ' if the incidence is from ' n subscript 3 end subscript '. Then assuming that n subscript 2 end subscript greater than n subscript 1 end subscript comma n subscript 2 end subscript greater than n subscript 3 end subscript and n subscript 3 end subscript greater than n subscript 1 end subscript, then value of t subscript 1 end subscript divided by t subscript 2 end subscript.

physics-General
General
physics-

Two blocks each of mass m lie on a smooth table. They are attached to two other masses as shown in the figure. The pulleys and strings are light. An object O is kept at rest on the table. The sides AB & CD of the two blocks are made reflecting. The acceleration of two images formed in those two reflecting surfaces w.r.t. each other is:

Two blocks each of mass m lie on a smooth table. They are attached to two other masses as shown in the figure. The pulleys and strings are light. An object O is kept at rest on the table. The sides AB & CD of the two blocks are made reflecting. The acceleration of two images formed in those two reflecting surfaces w.r.t. each other is:

physics-General
General
physics-

In the figure shown, the image of a real object O is formed at point I. AB is the principal axis of the mirror. The mirror must be:

In the figure shown, the image of a real object O is formed at point I. AB is the principal axis of the mirror. The mirror must be:

physics-General
parallel
General
physics-

A transparent cylinder has its right half polished so as to act as a mirror. A paraxial light ray is incident from left, that is parallel to principal axis, exits parallel to the incident ray as shown in the figure. The refractive index n of the material of the cylinder is :

A transparent cylinder has its right half polished so as to act as a mirror. A paraxial light ray is incident from left, that is parallel to principal axis, exits parallel to the incident ray as shown in the figure. The refractive index n of the material of the cylinder is :

physics-General
General
chemistry-

Which of the following statements are true (or) false -
i) open square brackets Cr open parentheses NH subscript 3 close parentheses subscript 6 close square brackets open square brackets Cr left parenthesis CN right parenthesis subscript 6 close square brackets and open square brackets Cr open parentheses NH subscript 3 close parentheses subscript 4 left parenthesis CN right parenthesis subscript 2 close square brackets open square brackets Cr open parentheses NH subscript 3 close parentheses subscript 2 left parenthesis CN right parenthesis subscript 4 close square brackets are coordination isomers
ii) open square brackets Cr left parenthesis py right parenthesis subscript 2 open parentheses straight H subscript 2 straight O close parentheses subscript 2 Cl subscript 2 close square brackets Cl and open square brackets Cr left parenthesis py right parenthesis subscript 2 open parentheses straight H subscript 2 straight O close parentheses Cl subscript 3 close square brackets straight H subscript 2 straight O are ionisation isomers
iii) open square brackets Pt open parentheses NH subscript 3 close parentheses subscript 4 Br subscript 2 close square brackets Cl subscript 2 and open square brackets Pt open parentheses NH subscript 3 close parentheses subscript 4 Cl subscript 2 close square brackets Br subscript 2 are linkage isomers
iv) cis platin exhibits geometrical isomerism

Which of the following statements are true (or) false -
i) open square brackets Cr open parentheses NH subscript 3 close parentheses subscript 6 close square brackets open square brackets Cr left parenthesis CN right parenthesis subscript 6 close square brackets and open square brackets Cr open parentheses NH subscript 3 close parentheses subscript 4 left parenthesis CN right parenthesis subscript 2 close square brackets open square brackets Cr open parentheses NH subscript 3 close parentheses subscript 2 left parenthesis CN right parenthesis subscript 4 close square brackets are coordination isomers
ii) open square brackets Cr left parenthesis py right parenthesis subscript 2 open parentheses straight H subscript 2 straight O close parentheses subscript 2 Cl subscript 2 close square brackets Cl and open square brackets Cr left parenthesis py right parenthesis subscript 2 open parentheses straight H subscript 2 straight O close parentheses Cl subscript 3 close square brackets straight H subscript 2 straight O are ionisation isomers
iii) open square brackets Pt open parentheses NH subscript 3 close parentheses subscript 4 Br subscript 2 close square brackets Cl subscript 2 and open square brackets Pt open parentheses NH subscript 3 close parentheses subscript 4 Cl subscript 2 close square brackets Br subscript 2 are linkage isomers
iv) cis platin exhibits geometrical isomerism

chemistry-General
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physics-

As shown in the figure the observer 'O' sees the distance AB as infinitely large. If refractive index of liquid is m1 and that of glass is mu subscript 2 end subscript comma text  then  end text fraction numerator mu subscript 1 end subscript over denominator mu subscript 2 end subscript end fraction text  is: end text

As shown in the figure the observer 'O' sees the distance AB as infinitely large. If refractive index of liquid is m1 and that of glass is mu subscript 2 end subscript comma text  then  end text fraction numerator mu subscript 1 end subscript over denominator mu subscript 2 end subscript end fraction text  is: end text

physics-General
parallel
General
physics-

In the figure ABC is the cross section of a right angled prism and ACDE is the cross section of a glass slab. The value of theta so that light incident normally on the face AB does not cross the face AC is (given s i n to the power of negative 1 end exponent invisible function application left parenthesis 3 divided by 5 right parenthesis equals 37 to the power of ring operator end exponent)

In the figure ABC is the cross section of a right angled prism and ACDE is the cross section of a glass slab. The value of theta so that light incident normally on the face AB does not cross the face AC is (given s i n to the power of negative 1 end exponent invisible function application left parenthesis 3 divided by 5 right parenthesis equals 37 to the power of ring operator end exponent)

physics-General
General
physics-

A man starting from point P crosses a 4 km wide lagoon and reaches point Q in the shortest possible time by the path shown in the figure. If the person swims at a speed of 3 km/hr and walks at a speed of 4 km/hr, then his time of journey is (µsaltwater = 4/3) :

A man starting from point P crosses a 4 km wide lagoon and reaches point Q in the shortest possible time by the path shown in the figure. If the person swims at a speed of 3 km/hr and walks at a speed of 4 km/hr, then his time of journey is (µsaltwater = 4/3) :

physics-General
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physics-

The following figure represents a wave front AB which passes from air to another transparent medium and produces a new wave front CD after refraction. The refractive index of the medium is (PQ is the boundary between air and the medium).

The following figure represents a wave front AB which passes from air to another transparent medium and produces a new wave front CD after refraction. The refractive index of the medium is (PQ is the boundary between air and the medium).

physics-General
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Two plane mirrors are joined together as shown in the figure. Two point objects O subscript 1 end subscript and O subscript 2 end subscript are placed symmetrically such that A O subscript 1 end subscript equals A O subscript 2 end subscript. The image of the two objects is common if :

Two plane mirrors are joined together as shown in the figure. Two point objects O subscript 1 end subscript and O subscript 2 end subscript are placed symmetrically such that A O subscript 1 end subscript equals A O subscript 2 end subscript. The image of the two objects is common if :

physics-General
General
physics-

An object and a plane mirror are shown in figure. Mirror is moved with velocity V as shown. The velocity of image is :

An object and a plane mirror are shown in figure. Mirror is moved with velocity V as shown. The velocity of image is :

physics-General
General
physics-

In the figure shown a person AB of height 170 cm is standing infront of a plane mirror. His eyes are at height 164 cm. At what distance from P should a hole be made in the mirror so that he cannot see the top of his head.

In the figure shown a person AB of height 170 cm is standing infront of a plane mirror. His eyes are at height 164 cm. At what distance from P should a hole be made in the mirror so that he cannot see the top of his head.

physics-General
parallel

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