Chapter 3
Metals and Non-Metals
MCQs
Q 1.: A non-metal used to preserve food material is:
(A) Nitrogen
(B) Sulphur
(C) Phosphorus
(D) Carbon
Option – A
Q 2.: Which of the following oxides of iron would be obtained on prolonged reaction of iron with steam?
(A) FeO
(B) Fe2O3
(C) Fe3O4
(D) Fe2O3 and Fe3O4
Option – C
Q 3.: The metals that float when treated with water are:
(A) Manganese and Sodium
(B) Sodium and Calcium
(C) Magnesium and Sodium
(D) Magnesium and Calcium
Option – D
Q 4.: Aluminium is used for making utensils. Which of the following properties of aluminium are responsible for the same?
(i) Good thermal conductivity
(ii) Good electrical conductivity
(iii) Ductility
(iv) High melting point
(A) (i) and (ii)
(B) (i) and (iii)
(C) (ii) and (iii)
(D) (i) and (iv)
Option – D
Q 5.: What happens when a pellet of sodium is dropped in water?
(A) It catches fire and forms oxide.
(B) It absorbs heat and forms oxide.
(C) It catches fire and forms hydroxide.
(D) It absorbs heat and forms hydroxide.
Option – C
Q 6.: When calcium oxide is added to water, it completely dissolves in water without forming bubbles. What products are formed in this reaction?
(A) Ca and H2
(B) Ca and H2O2
(C) Ca(OH)2
(D) CaH2
Option – C
Q 7.: Which of the following can undergo a chemical reaction?
(A) MgSO4 + Fe
(B) ZnSO4 + Fe
(C) MgSO4 + Pb
(D) CuSO4 + Fe
Option – D
Q 8.: When a non-metal is allowed to react with water
(A) CO2 gas is formed
(B) H2 gas is formed
(C) Product formed depends on temperature
(D) No products are formed
Option – D
Q 9.: Aqua regia is a freshly prepared mixture of concentrated HNO3 and concentrated HCl in the ratio of:
(A) 1:3 respectively
(B) 2:3 respectively
(C) 3:1 respectively
(D) 3:2 respectively
Option – A
Q 10.: A student writes two incomplete chemical reactions.
P4(s) + 5O2(g) → X
2Mg(s) + O2(g) → Y
Which option complete the reactions to form a balanced chemical equation?
(A) X-P5O4(s); Y-(MgO)2(s)
(B) X-4PO10(s);Y-4MgO(s)
(C) X-P4O10(s);Y-2MgO(s)
(D) X-5P4O2(s);Y-Mg2O2(s)
Option – C
Q 11.: The arrangement for copper, Tin, Lead and Mercury, according to the reactivity series is:
(A) Tin>Lead>Copper>Mercury
(B) Lead>Copper>Mercury>Tin
(C) Copper>Mercury>Tin>Lead
(D) Mercury>Tin>Lead>Copper
Option – A
Q 12.: Which is the least conductor of heat
(A) Lead
(B) Gold
(C) Platinum
(D) Silver
Option – A
Q 13.: Which oxide is neutral ?
(A) H2O
(B) NO2
(C) MgO
(D) None of these
Option – A
Q 14.: Metal have________________ no. of electrons in their outer most shell
(A) 1 to 3
(B) 1 to 8
(C) 7 to 9
(D) 10 to 12
Option – A
Q 15.: An alloy is
(A) A mixture
(B) A metalloid
(C) An element
(D) An isomer
Option – A
Q 16.: Which non-metal is the best conductor of electricity
(A) Oxygen
(B) Nitrogen
(C) Carbon
(D) Argon
Option – C