A student took four test-tubes containing solutions of different colours marked I, II, III and IV as shown here. The test-tubes containing copper sulphate solution and ferrous sulphate solution could be the tubes :

(1) I and III
(2) II and III
(3) III and IV
(4) II and IV

Open in App

Solution

The copper sulphate solution is of blue colour while the iron sulphate is of pale green colour.

Hence, the correct answer is option 4.

Suggest Corrections

Similar questions

A student took four test tubes containing solutions of different colours marked I (colourless) II(Blue), III (Orange) and IV (Pale green) .
Which of the tubes contain copper sulphate solution and ferrous
sulphate solution?

Q. A student took four test-tubes I, II, III and IV containing aluminium sulphate, copper sulphate, ferrous sulphate and zinc sulphate solutions respectively. He placed iron strips in each one of them. After some time, he found a brown deposit formed in test-tube marked :

(1) I
(2) II
(3) III
(4) IV

Q. A student takes Cu, Al, Fe and Zn pieces separately in four test tubes labelled as I, II, III, and IV respectively. He adds 10 mL of freshly prepared ferrous sulphate solution to each test tube and observes the colour of the metal residue in each case.

He would observe a black residue in the test tubes :
(1) (I) and (II)
(2) (I) and (III)
(3) (II) and (III)
(4) (II) and (IV)

Q. Four test tubes named as (i)-(iv) are half-filled with colourless aqueous solution of

A l_{2} (S O_{4})_{3}

.
A piece of metal zinc was placed in test tube (i), iron in test tube (ii), copper in test tube (iii) and aluminium in test tube (iv). The final colour in the four test tubes are:

Given below are the steps to test the presence of proteins in a food item.

(i) Take a small quantity of the food item in a test tube, add 10 drops of water to it and shake it.

(ii) Make a paste or powder of food to be tested.

(iii) Add 10 drops of caustic soda solution to the test tube and shake well.

(iv) Add 2 drops of copper sulphate solution to it.

Which of the following is the correct sequence of steps?

(a) i, ii, iv, iii

(b) ii, i, iv, iii

(d) iv, ii, i, iii

Join BYJU'S Learning Program

A student took four test-tubes containing solutions of different colours marked I, II, III and IV as shown here. The test-tubes containing copper sulphate solution and ferrous sulphate solution could be the tubes : (1) I and III (2) II and III (3) III and IV (4) II and IV

The copper sulphate solution is of blue colour while the iron sulphate is of pale green colour. Hence, the correct answer is option 4.

A student took four test-tubes containing solutions of different colours marked I, II, III and IV as shown here. The test-tubes containing copper sulphate solution and ferrous sulphate solution could be the tubes :

(1) I and III
(2) II and III
(3) III and IV
(4) II and IV

The copper sulphate solution is of blue colour while the iron sulphate is of pale green colour.

Hence, the correct answer is option 4.