Metals and Non-metals

Electro positivity is the

• tendency to gain electrons

• tendency to gain protons

• tendency to lose electrons 

• tendency to lose protons

Which of the following chemical reaction is correct ?

•  $Mg\ +2HCl\ \rightarrow\ MgCl_{ }+\ H_2$  

•   $4Al\ +3O_{2\ }\ \rightarrow\ 2Al_2O_3$  

•  $Ca\ +\ Cl\ \rightarrow\ CaCl_2$  

•  $Fe\ +\ H_2O_3\ \rightarrow\ Fe_2O_3\ +\ H_2$  

Which of the following properties do metals show ?

• Sonorous

• Conductors

• Found in all states at room temp.

• Hard and Rigid

During andisation, oxygen gas is evolved at

• Cathode

• Anode

• Both cathode and anode

• None of the above

Which of the following react with dilute HNO₃ and evolve H₂ gas

• Magnesium

• Zinc

• Manganese

• Oxygen

What is the electronic configuration of sodium

• 2,7

• 2,8,4

• 2,8,2

• 2,8,1

Which of the following is the property of ionic compounds

• insoluble in water

• Brittle

• soluble in petrol, kerosene, etc.

• conduct electricity in the solid state

Which is an amphoteric oxide?

• Zinc oxide

• Calcium oxide

• Magnesium oxide

• Carbon monoxide

Why H₂ gas is not evolved when a metal reacts with HNO₃ (Some exceptions are there)

• HNO₃ is a strong reducing agent, due to which it reduces the evolved hydrogen gas.

• The evolved hydrogen reacts with the metal and thus hydrogen gas is not evolved

• HNO₃ is a strong oxidizing agent , due to which it oxidizes the evolved hydrogen.

• Don't want to answer the question.

Which of the following is the most ductile metal ?

• Fe

• Au

• Ag

• Na