2 mL each of conc. HCl, HNO(3) and a mix...

2 mL each of conc. HCl, `HNO_(3)` and a mixture of conc. HCl and conc. `HNO_(3)` in the ratio of3 : 1 were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C. The metal could be

Text Solution

Verified by Experts

The correct Answer is:

b,d

A mixture of cone. HOl and cone. `HNO_(3)` in the ratio of 3 : 1 is known as aqua-regia. Gold (AU) and platinum (Pt) dissolve only in aqua-regia.

Topper's Solved these Questions

CHEMICAL REACTIONS AND EQUATIONS
NCERT EXEMPLAR|Exercise Long Answer Type Questions|1 Videos
PERIODIC CLASSIFICATION OF ELEMENTS
NCERT EXEMPLAR|Exercise Periodic Classification Of Elements|52 Videos

Similar Questions

Explore conceptually related problems

2 mL each of conc. HCl, conc. HNO3 and a mixture of conc.HCl and HNO_3 in the ratio of 3:1 were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C. the metal could be

5 mL each of concentrated HCl, HNO_(3) and a mixture of concentrated HNO_(3) (5 mL) were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube. The metal could be

Aquaregia is a mixture of conc. HCl and conc. HNO_(3) in the ratio of 1:3. True/False

What is the correct observation when Br_2 is treated with NaF, NaCl andNal taken in three test-tubes labelled as A, Band C.

Four test tubes were taken and marked A, B, C and D respectively. 2 mL of solution of Al_(2)(SO)_(3) in water was filled in each of the four test-tubes. Clean piece of metal zinc was placed in test tube A, clean iron nail was put in test tube B, clean copper wire was placed in test tube C and a clean aluminium wire was placed in test tube D. What colour change would you observe in all the four tubes ?

Look at Figure 5.1 which shows solutions taken in test tubes A,B,C and D . What colour is expected when a piece of red litmus paper is dropped in each test tube ? Nature of the solutions is given in the table for your help .

NCERT EXEMPLAR-METALS AND NON- METALS-Metals And Non- Metals

Generally, non-metals are not lustrous. Which of the following non-met...
Text Solution
|
Which one of the following four metals would be displaced from the sol...
Text Solution
|
2 mL each of conc. HCl, HNO(3) and a mixture of conc. HCl and conc. HN...
Text Solution
|
An alloy is
Text Solution
|
An electrolytic cell consists of (i) positively charged cathode (i...
Text Solution
|
During electrolytic refining of zinc, it gets
Text Solution
|
An element A is soft and can be cut with a knife. This is very reactiv...
Text Solution
|
Alloys are homogeneous mixtures of a metal with a metal or non-metal. ...
Text Solution
|
Which among the following statements is incorrect for magnesium metal?
Text Solution
|
Which among the following alloys contain mercury as one of its constit...
Text Solution
|
Reaction' between X and Y, forms compound Z. X loses electron and Y ga...
Text Solution
|
The electronic configurations of three elements X, Y and Z are X 2, 8,...
Text Solution
|
Although metals form basic oxides, which of the following metals form ...
Text Solution
|
Generally, non-metals are not conductors of electricity. Which of th...
Text Solution
|
Electrical wires have a coating of an insulating material. The materia...
Text Solution
|
Which of the following non-metals is a liquid?
Text Solution
|
Which of the following can undergo a chemical reaction?
Text Solution
|
Which one of the following Figures correctly describes the process of ...
Text Solution
|
Iqbal treated a lustrous, divalent element M with sodium hydroxide. He...
Text Solution
|
During extraction of metals, electrolytic refining is used to obtain p...
Text Solution
|