Home
Class 12
CHEMISTRY
In black and white photography, the deve...

In black and white photography, the developed film is fixed by washing with

A

`"quinone"_1 to "quinone"_2 to ` hydroquinone

B

`Ag^(+) He to Ag^@`

C

`Cd^(+ + ) He to Cd^+`

D

`"gelatin"_C to "gelatin"_B + H_2O`

Text Solution

Verified by Experts

The correct Answer is:
B
Light catalyzed reduction of silver salts to produce elemental silver is the basis for black and white photographic film
Promotional Banner

Similar Questions

Explore conceptually related problems

Write the balanced chemical equations for developing a black and white photographic film Also, give the reason as to why the solution of sodium thiosulphate on acidification turns milky white and give the balanced chemical equation of this reaction .

Give equation and describe the process for the developing of black and white photographic film. When sodium thiosulphate solution is treated with acidic solution turns milky white. Give the half reaction of the above described process.

What is the solution in which photographic film is washed? What reaction takes place?

Assertion (A) : The colour of old lead painting can be restored by washing with dilute solution of H_2O_2 . Reason (R) : Black lead sulphide is oxidised by H_2O_2 to white lead suphate.

A bag contains 6 black and 3 white balls. Another bag contains 5 black and 4 white balls. If one ball is drawn from each bag, find the probability that these tow balls are of the same colour.

A bag contains 6 red, 5 black and 4 white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is : (i) white (ii) red (iii) not black (iv) red or white.

A bag contains 4 red, 5 black and 6 white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is (i) white (ii) red (iii) not black (iii) red or white

A door of length 1 m and breadth 0.5 m is on a wall. The length of the wall is 4.5 m and the breadth is 3.6 m as shown in Fig. 5. Find the cost of white washing the wall if the rate of white washing the wall is Rs 20 per m^2 .

A door of length 2 m and breadth 1 m is fitted in a wall. The length of the wall is 4.5 m and the breadth is 3.6 m . Find the cost of white washing the wall, if the rate of white washing the wall is Rs 20 per m^2 .

There are 4 red, 3 black and 5 white balls in a bag. Find the number of ways of selecting three balls, if at least one black ball is there.