English
Maharashtra State BoardSSC (English Medium) 10th Standard

In preparation of Aqua regia hydrochloric acid and _______ acid are mixed.

Advertisements
Advertisements

Question

In preparation of Aqua regia hydrochloric acid and _______ acid are mixed.

Options

  • sulphuric acid

  • nitric acid

  • carbonic acid

  • phosphoric acid

MCQ
Fill in the Blanks
Advertisements

Solution

In preparation of Aqua regia hydrochloric acid and nitric acid acid are mixed.

shaalaa.com
  Is there an error in this question or solution?
Chapter 8: Metallugy - Choose the correct option. [Page 9]

APPEARS IN

SCERT Maharashtra Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
Chapter 8 Metallugy
Choose the correct option. | Q 15. | Page 9

RELATED QUESTIONS

What do you observe when dilute sulphuric acid is added to granulated zinc?


Fill in the blank

When a piece of copper is added to silver nitrate solution, it turns ............in colour.


What do you observe when magnesium ribbon is burnt in oxygen?


Write chemical equation for the event.
Aluminium came in contact with air.


Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals.


State what is meant by the ‘reactivity series of metals’


With reference to Water explain with suitable examples of how the reactivity of the metals could be differentiated.


Give a balanced equation for the following type of reaction:

A displacement reaction in which a metal above hydrogen in the reactivity series, displaces another metal from the solution of its compound.


Classify the following metals based on their reactivity.
Cu, Zn, Ca, Mg, Fe, Na, Li, Hg

More reactive Moderately reactive Less reactive
     
     

Explain the following reaction with the balanced equation.

Magnesium reacts with dil HCl


Explain the following reaction with the balanced equation.

Sulphur burns in air


Observe the following diagram and identify the type of reaction and write observation.


Which among the following alloys contain mercury as one of its constituents?


A metal M does not liberate hydrogen from acids but reacts with oxygen to give a black colour product. Identify M and black coloured product and also explain the reaction of M with oxygen.


Give the steps involved in the extraction of metals of low and medium reactivity from their respective sulphide ores.


Of the three metals X, Y and Z. X reacts with cold water, Y with hot water and Z with steam only. Identify X, Y and Z and also arrange them in order of increasing reactivity.


Metal ‘A’ has electronic configuration 2, 8, 1 and metal ‘B’ has electronic configuration 2, 8, 8, 2. Out of these, which metal is more reactive? Write the reaction of this metal with dilute HCl acid.


Three metal samples of magnesium, aluminium and iron were taken and rubbed with sandpaper. These samples were then put separately in test tubes containing dilute hydrochloric acid. Thermometers were also suspended in each test tube so that their bulbs dipped in the acid. The rate of formation of bubbles was observed. The above activity was repeated with dilute nitric acid and the observations were recorded.

Answer the following questions:

(i) When the activity was done with dilute hydrochloric acid, then in which one of the test tubes was the rate of formation of bubbles the fastest and the thermometer showed the highest temperature?

(ii) Which metal did not react with dilute hydrochloric acid? Give reason.

(iii) Why is hydrogen gas not evolved when a metal reacts with dilute nitric acid? Name the ultimate products formed in the reaction.

OR

Name the type of reaction on the basis of which the reactivity of metals is decided. You have two metals X and Y. How would you decide which is more reactive than the other?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×