Advertisements
Advertisements
Question
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?
Advertisements
Solution
(a) The oxide XO is neutral in nature as it has no action on litmus solution.
(b) The oxide XO2 is acidic in nature as it turns litmus solution red.
(c) The element X is a non-metal because it forms an acidic and neutral oxide, which is the property of a non-metal.
(d) Carbon is a non-metal like the element X.
APPEARS IN
RELATED QUESTIONS
Write equations for the reactions of calcium and potassium with water.
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Write the electron-dot structures for sodium, oxygen and magnesium.
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be:
Name two metals which form amphoteric oxides.
Which of the two metals is more reactive: copper or silver?
Complete and balance the following equation:
Na2O + H2O →
Complete and balance the following equation:
Cu (NO3)2 (aq) + Zn(s) →
Fill in the following blank with suitable word:
Magnesium liberates ............... gas on reacting with hot boiling water.
Which of the following elements would yield an acidic oxide.
Na, S, C, K, H
What happens when a rod of zinc metal is dipped into a solution of copper sulphate? Give chemical equation of the reaction involved.
Name two metals which cannot displace hydrogen from dilute acids.
What special name is given to substances like aluminium oxide.
Write the equation for the reaction of Zinc with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
An element X forms two oxides XO and XO2. The oxide XO is neutral but XO2 is acidic in nature. The element X is most likely to be:
(a) sulphur
(b) carbon
(c) calcium
(d) hydrogen
Choose the correct alternative and rewrite the following:
Reaction of iron nails whith copper sulphate solution is an example of _____________________
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
Which one among the following is an acidic oxide?
Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?
Metals are generally solid. Which of the following metals is in the liquid state at room temperature?
