Advertisements
Advertisements
Question
A basic oxide will be formed by the element:
(a) K
(b) S
(c) P
(d) Kr
Solution
(a) K
Because K is a metal, its oxide K2O is a basic oxide.
APPEARS IN
RELATED QUESTIONS
State whether the following statement is true or false:
Non-metals react with dilute acids to produce a gas which burns with a 'pop' sound.
Name the metal which has been placed just below copper in the reactivity series.
Which of the following elements would yield a basic oxide.
Na, S, C, K, H
Name one metal which displaces copper from copper sulphate solution and one which does not.
Which non-metal has been placed in the reactivity series of metals?
An element X reacts with hydrogen, when heated, to form a covalent hydride H2X. If H2X has a smell of rotten eggs, the element X is likely to be:
(a) carbon
(b) sulphur
(c) chlorine
(d) phosphorus
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.
Explain the following:
Reactivity of aluminium decrease if it is dipped in nitric acid.
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
Write the chemical equation for the following reaction:
Calcium metal reacts with water.