CBSE Class 10 Science Metals and Non Metals MCQs Set G

Question. Which of the following can undergo a chemical reaction?
(a) MgSO₄ + Fe
(b) ZnSO₄ + Fe
(c) MgSO₄ + Pb
(d) CuSO₄ + Fe

Answer: D

Question. A reaction in which a more reactive metal replaces a less reactive metal from its salt solution is called a/an ________ reaction.
(a) combination
(b) displacement
(c) double displacement
(d) addition

Answer: B

Question. Which of the following metal will not give H₂(g) with H₂O?
(a) Na
(b) Mg
(c) Zn
(d) Cu

Answer: D

Question. In each test tubes A,B,C and D, 2mL of solution of Al2(SO4)3 in water was filled. Clean pieces of zinc was placed in test tube A, clean iron nail was put in test tube B, silver (Ag) was placed in test tube C and a clean copper wire was placed in test tube D. Which of the following option is correct about above experiment?
(a) Zinc is more reactive than aluminium
(b) Copper is more reactive than aluminium
(c) Zinc is less reactive than copper
(d) Zinc, iron, silver and copper are less reactive than aluminium

Answer: D

Question. Name the metal which can be cut with a knife.
(a) Calcium
(b) Iron
(c) Sodium
(d) Aluminium

Answer: C

Question. Zinc and copper metal used in the laboratory is available respectively in the form of
(a) Zn filings ,Cu turnings
(b) Zn strips, Cu pellets
(c) Zn granules, Cu turnings
(d) Zn pellets, Cu strips

Answer: C

Question. Name the metal which is abundant in nature
(a) Aluminium
(b) Iron
(c) Zinc
(d) Carbon

Answer: A

Question. Give an example of a metal which is a liquid at room temperature.
(a) Mercury
(b) Magnesium
(c) lead
(d) tin

Answer: A

Question. Metals like zinc and aluminium react with sodium hydroxide to produce ____ gas.
(a) hydrogen
(b) hydrogen sulphide
(c) oxygen
(d) sulphur dioxide

Answer: A

Question. The property of metal by which it can be drawn into wires is called ____________.
(a) sonority
(b) malleability
(c) ductility
(d) lusture

Answer: C

Question. To show experimentally that zinc is more reactive than copper ,the correct procedure is
(a) prepare copper sulphate solution and dip zinc strip in it
(b) prepare zinc sulphate solution and dip copper strip in it
(c) heat zinc and copper strips.
(d) add dilute nitric acid on both the strips

Answer: A

Question. The blue colour of copper sulphate solution can be changed to pale green by immersing which of the following rod in it.
(a) Iron
(b) Zinc
(c) Aluminium
(d) Silver

Answer: A

Question. The elements and compounds present in the earth‘s crust is called___________
(a) Ore
(b) Gangue
(c) anode mud
(d) minerals

Answer: D

Question. ___________ is found in the free state
(a) Gold
(b) Sodium
(c) Potassium
(d) Calcium

Answer: A

Question. Which of the following is a non-metal but is lustrous?
(a) Carbon
(b) Mercury
(c) Iodine
(d) Fluorine

Answer: C

Question. An incomplete chemical equation of the reaction between iron and oxygen is given below: 4Fe (s) + 3O₂(g) →
Which option shows the products formed during the reaction?
(a) 3Fe₄O₂(s)
(b) 12FeO(s)
(c) 4FeO₃(s)
(d) 2Fe₂O₃(s)

Answer: D

Question. An iron nail was kept immersed in aluminium sulphate solution, after about an hour it was observed that
(a) The colourless solution changes to light green
(b) the solution becomes warm
(c) grey metal is deposited on the iron nail
(d) the solution remains colourless and no deposition is seen on the iron nail

Answer: D

Question. Some crystals of copper sulphate were dissolved in water. The colour of the solution would be
(a) Green
(b) Red
(c) Blue
(d) Brown

Answer: C

Question. Metals, except Al and Zn, react with oxygen to form _______ oxides.
(a) acidic
(b) neutral
(c) amphoteric
(d) basic

Answer: D

Question. When sulphur reacts with oxygen, the oxide formed is _______ in nature.
(a) alkaline
(b) neutral
(c) basic
(d) acidic

Answer: D

Question. A student writes two incomplete chemical reactions.
X – P₄(s) + 5O₂(g) →
Y – 2Mg(s) + O₂(g) →
Which option completes 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)

Answer: C

Question. A student studying the chemical properties of metals finds incomplete chemical reactions in his book, as shown: MgO + HNO₃ →
Which option completes the reaction?
(a) MgO + HNO₃ → Mg + NO₂ + O₂
(b) MgO + HNO₃ → Mg(NO₃)₂ + H₂O
(c) MgO + HNO₃ → Mg(OH)₂ + 2NO₂
(d) MgO + HNO₃ → Mg₃N2 + 4H₂O

Answer: B

Question. Which of the following can be beaten into thin sheets?
(a) Zinc
(b) Phosphorus
(c) Sulphur
(d) Oxygen

Answer: A

Question. When hydrochloric acid is added to barium hydroxide, a white-colored compound is formed. 
Which option gives the complete chemical reaction?
(a) 2HCl + Ba(OH)₂ → BaH₂ + 2HCl + O₂
(b) 2HCl + Ba(OH)₂ → BaCl₂ + 2HOH
(c) HCl + Ba(OH)₂ → BaCl₂ + 2HOH
(d) HCl + 2Ba(OH) → 2BaCl₂ + 2HOH + O₂

Answer: B

Question. 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 H₂O₂
(b) CaH₂
(c) Ca(OH)₂
(d) Ca and H₂

Answer: C

Question. When you place an iron nail in copper sulphate solution ,the reddish brown coating formed on the nail is
(a) soft and dull
(b) hard and flaky
(c) smooth and shining
(d) rough and granular

Answer: B

Question. Fe₂O₃ +Al ----- Al₂O₃+Fe. The reaction is an example of _______________
(a) combination reaction
(b) decomposition reaction
(c) displacement reaction
(d) double displacement reaction

Answer: C

Question. A student puts one big iron nail each in four test tubes containing solutions of zinc sulphate, aluminium sulphate, copper sulphate and iron sulphate. A reddish brown coating was observed only on the surface of iron nail, which was put in the solution of
(a) zinc sulphate
(b) iron sulphate
(c) copper sulphate
(d) aluminium sulphate

Answer: C

In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
(a) Assertion and reason both are correct statements but reason is not correct explanation for assertion.
(b) Assertion is correct statement but reason is wrong statement.
(c) Assertion is wrong statement but reason is correct statement.
(d) Assertion and reason both are correct statements but reason is not correct explanation for assertion.

Question. A: Aluminium is called a self-protecting metal.
R: Aluminium reacts with atmospheric oxygen to form a very thin layer of aluminium oxide which is sticky in nature.

Answer: B

Question. A: Copper reacts with silver nitrate solution.
R: Copper is placed higher in the reactivity series than silver. Thus it can displace silver from silver nitrate solution.

Answer: A

Question. A: Na, K, Ca react with cold water.
R: They produce their respective hydroxides and hydrogen gas.

Answer: A

Question.A: Sodium metal reacts violently with water.
R: It Floats on the surface of water and melts to form a silvery ball and disappears producing a colourless gas

Answer: A

Question. A: Sodium chloride has a high melting and boiling point.
R: Sodium and chloride ions held by weak inter ionic bond in its molecule.

Answer: B

Question. A: In electrolytic refining, impure copper is taken as cathode and pure copper as anode.
R: Molten chlorides are used as electrolytes in refining of metals.

Answer: B

Question. A: Fe₂O₃ +2Al --- Al₂O₃+2 Fe
R: Due to lot of heat molten iron is formed.

Answer: A