मराठी

An Element E Forms an Oxide E2o. an Aqueous Solution of E2o Turns Red Litmus Paper Blue. (A) What is the Nature of the Oxide E2o? (B) State Whether Element E is a Metal Or a Non-metal. (C) Give One Example of an Element like E. - Science

Advertisements
Advertisements

प्रश्न

An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue.
(a) What is the nature of the oxide E2O?
(b) State whether element E is a metal or a non-metal.
(c) Give one example of an element like E.

Advertisements

उत्तर

(a) The oxide E2O is basic in nature because it turns red litmus paper blue.

(b) The element E is a metal because metal oxides are basic in nature.

(c) Sodium (Na) is an element like E. It forms the oxide Na2O on reacting with oxygen, which turns red litmus paper blue.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Metals and Non-metals - Exercise 1 [पृष्ठ १३५]

APPEARS IN

लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 3 Metals and Non-metals
Exercise 1 | Q 89 | पृष्ठ १३५

संबंधित प्रश्‍न

.................... liberated when acetic acid reacts with sodium metal.
(a) Hydrogen
(b) Chlorine
(c) Oxygen
(d) Nitrogen


Which gas is produced when dilute hydrochloric acid is added to a reactive metal? 


What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.


Why are metals called electropositive elements whereas non-metals are called electronegative elements?


Name the metal which has been placed just below copper in the reactivity series.


Explain why, the surface of some metals acquires a dull appearance when exposed to air for a long time.


Fill in the following blank with suitable word:

The white powder formed when magnesium ribbon burns in oxygen is of ....................


With the help of examples, describe how metal oxides differ from non-metal oxides.


 What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.


Which gas is produced when dilute hydrochloric acid is added to a reactive metal?


What is the action of water on sodium ? Write equation of the chemical reaction involved.


What is the action of water on aluminium ? Write equation of the chemical reaction involved.


What is meant by the reactivity series of metals? Arrange the following metals in an increasing order of their reactivities towards water:
Zinc, Iron, Magnesium, Sodium


Name one metal which displaces silver from silver nitrate solution and one which does not.


The elements whose oxides can turn phenolphthalein solution pink are:
(a) Na and K
(b) K and C
(c) Na and S
(d) K and P


An element X forms two oxides XO and XO2. The oxide XO has no action on litmus solution but oxide XO2 turns litmus solution red.
(a) What is the nature of oxide XO?
(b) What is the nature of oxide XO2?
(c) Would you call element X a metal or a non-metal? Give reason for your choice.
(d) Can you give an example of element like X?


A zinc plate was kept in a glass container having CuSO4 solution. On examining it was found that the blue colour of the solution is getting lighter and lighter. After a few days, when the zinc plate was taken out of the solution, a number of small holes were noticed in it. State the reason and give chemical equation of the reaction involved.


Choose the correct alternative and rewrite the following:

Reaction of iron nails whith copper sulphate solution is an example of _____________________


Write the chemical equation of the above process.


The substance that will be flattened on beating with a hammer is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×