Q89 of 400 Page 136

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.

(a) An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue. The nature of the oxide E2O is basic.


(b) Element E is a metal.


(c) One example of an element like E is sodium (Na).



More from this chapter

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87 Which of the following non-metal is a liquid? 88 Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions? 90 Metal A burns in air, on heating, to form an oxide A2O3 whereas another metal B burns in air only on strong heating to form an oxide BO. The two oxides A2O3 and BO can react with hydrochloric acid as well as sodium hydroxide solution to form the corresponding salts and water.

(a) What is the nature of oxide A2O3?


(b) What is the nature of oxide BO?


(c) Name one metal like A.


(d) Name one metal like B.

 91 An element X forms two oxides XO and XO2. The oxide XO has no action on litmus solution but oxide XO2 turns litmus solution O 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.