Question 1 :
Coulomb's law is used to calculate the energy of an ion pair.
Question 2 :
The second most abundant metal present in the crust of the earth is :
Question 6 :
$Li$, $K$, $Ca$, $Na$, $Mg$, $Al$, $Zn$, $Fe$, $Pb$, $Cu$, $Hg$, $Ag$<br/>Which metal will displace hydrogen from acids but not water?
Question 9 :
The process of protecting iron by coating with zinc is called:
Question 11 :
Which of the following is a correct property for solid magnesium carbonate?
Question 14 :
Assertion: Ionic compounds are bad conductors of electricity.
Reason: In ionic compounds mobile ions exists.
Question 15 :
In CaF$_2$, the number of electron(s) transferred from calcium to fluorine atoms are_____.
Question 16 :
A solid compound "A" consists of simple ions.<br/>Nature of the bond present in A will be:
Question 17 :
Which of the following metals exist in their native state in nature?<br/>(i) Ca<br/>(ii) Au<br/>(iii) Zn<br/>(iv) Ag<br/>
Question 21 :
Process of depositing a thin layer of zinc metal on iron objects is called:
Question 22 :
Read the following statements and answer as true or false.<br/>Metals occur in nature only as free elements.<br/>
Question 24 :
Electrolysis is used in the extraction of metals from their ores.
Question 29 :
Heating of concentrated ore in absence of air, for conversion into oxide ore, is known as ____.<br/>
Question 30 :
Most of the metals which occurs in native state in nature:
Question 31 :
When sodium reacts with cold water, then the product formed will be:
Question 34 :
The reddish brown deposit formed on iron nails kept in a solution of copper sulphate is:
Question 35 :
Of the following the metals that cannot be obtained by electrolysis of the aqueous solution of their salts are:
Question 37 :
Which one of the following metals will not reduce $ H_2 O? $