Chemistry
Name:
(a) a liquid non-metal
(b) two metalloids
(c) a metal which do not corrode easily
(d) two metals which react with cold water
(e) a non-metal which can form a positive ion.
(f) a non-metal which shows reducing property.
Answer
(a) a liquid non-metal — bromine
(b) two metalloids — boron and silicon
(c) a metal which do not corrode easily — gold
(d) two metals which react with cold water — potassium and sodium
(e) a non-metal which can form a positive ion — hydrogen
(f) a non-metal which shows reducing property — carbon
Related Questions
Give the importance of the following in living beings:
(a) Nitrogen
(b) Hydrogen
(c) Carbon
State the position of the following in the periodic table:
(a) Alkali metals
(b) Alkaline earth metals
(c) Halogens
(d) Aluminum
From the list of characteristics given below, select the five which are relevant to non-metals and their compounds:
A. Ductile
B. Conduct electricity
C. Brittle
D. Acidic oxides
E. Basic oxides
F. Discharged at anode
G. Discharged at cathode
H. Ionic chlorides
I. Covalent chlorides
J. Reaction with dilute sulphuric acid yields hydrogen
K. 1, 2 or 3 valence electrons
L. 5, 6, 7 valence electrons
(Write the five letters corresponding to the correct characteristics)
Why are alkali metals kept in kerosene oil?