Metals and Non-metals

1. A.
   Less violent, but the heat evolved is sufficient for the hydrogen to catch fire.
2. B.
   Very violent and exothermic and hydrogen catches fire.
3. C.
   Exothermic, but the heat evolved is not sufficient for the hydrogen to catch fire.
4. D.
   Slow and endothermic.

Tap an option to check your answer.

1. A.
   $\mathrm{MgO}$, turns blue litmus into red.
2. B.
   $\mathrm{MgO}$, turns red litmus blue.
3. C.
   $\mathrm{MgO_2}$, turns red litmus blue.
4. D.
   $\mathrm{Mg_2O}$, turns blue litmus red.

Tap an option to check your answer.

1. A.
   $\mathrm{Na_2O}$
2. B.
   $\mathrm{K_2O}$
3. C.
   $\mathrm{CO_2}$
4. D.
   $\mathrm{Al_2O_3}$

Tap an option to check your answer.

1. A.
   Mg is a lighter element than water.
2. B.
   Mg reacts with water to produce $\mathrm{H_2}$ gas which helps in floating.
3. C.
   Mg reacts with water to produce $\mathrm{N_2}$ gas which helps in floating.
4. D.
   Mg reacts with water to form $\mathrm{CO_2}$ gas which helps in floating.

Tap an option to check your answer.

1. A.
   Sodium
2. B.
   Calcium
3. C.
   Iron
4. D.
   Magnesium

Tap an option to check your answer.

1. A.
   $\mathrm{Pb}$
2. B.
   $\mathrm{Cu}$
3. C.
   $\mathrm{Ag}$
4. D.
   $\mathrm{Al}$

Tap an option to check your answer.

1. A.
   Sodium
2. B.
   Potassium
3. C.
   Calcium
4. D.
   Magnesium

Tap an option to check your answer.

1. A.
   copper and zinc
2. B.
   lead and zinc
3. C.
   lead and tin
4. D.
   copper and tin

Tap an option to check your answer.

1. A.
   Brass
2. B.
   Bronze
3. C.
   Amalgam
4. D.
   Steel

Tap an option to check your answer.

1. A.
   Potassium
2. B.
   Calcium
3. C.
   Sodium
4. D.
   Iron

Tap an option to check your answer.

1. A.
   Only (P)
2. B.
   Only (Q)
3. C.
   (Q) and (R)
4. D.
   (P) and (Q)

Tap an option to check your answer.

1. A.
   copper and zinc
2. B.
   copper and iron
3. C.
   silver and magnesium
4. D.
   magnesium and aluminium

Tap an option to check your answer.

1. A.
   Oxygen
2. B.
   Nitrogen
3. C.
   Hydrogen
4. D.
   Nitrogen Dioxide

Tap an option to check your answer.

1. A.
   $\mathrm{Al_3O_4}$ and $\mathrm{MgO_2}$
2. B.
   $\mathrm{Al_2O_3}$ and $\mathrm{MgO}$
3. C.
   $\mathrm{Al_3O_4}$ and $\mathrm{MgO}$
4. D.
   $\mathrm{Al_2O_3}$ and $\mathrm{MgO_2}$

Tap an option to check your answer.

1. A.
   Magnesium
2. B.
   Copper
3. C.
   Lead
4. D.
   Zinc

Tap an option to check your answer.

1. A.
   malleability
2. B.
   ductility
3. C.
   rigidity
4. D.
   resistivity

Tap an option to check your answer.

1. A.
   Sodium
2. B.
   Magnesium
3. C.
   Aluminium
4. D.
   Calcium

Tap an option to check your answer.

1. A.
   Aluminium
2. B.
   Copper
3. C.
   Silver
4. D.
   Gold

Tap an option to check your answer.

1. A.
   Reduction with carbon
2. B.
   Reduction with hydrogen
3. C.
   Reduction with aluminium
4. D.
   Electrolytic reduction

Tap an option to check your answer.

1. A.
   Its reaction with iron is highly exothermic.
2. B.
   When it is heated with iron (III) oxide, molten iron is obtained.
3. C.
   When it is heated with iron (III) oxide, molten aluminium oxide is obtained to join railway tracks.
4. D.
   Its melting point is low as compared to iron and a molten alloy of iron and aluminium is formed on heating which is used to join railway tracks.

Tap an option to check your answer.

1. A.
   Only (i)
2. B.
   Only (iii)
3. C.
   (i) and (iv)
4. D.
   (i), (ii) and (iv)

Tap an option to check your answer.

1. A.
   It has high melting point.
2. B.
   It is highly soluble in water.
3. C.
   It has weak electrostatic forces of attraction between its oppositely charged ions.
4. D.
   It conducts electricity in its molten state or aqueous solution.

Tap an option to check your answer.

1. A.
   Bronze and Brass
2. B.
   Brass and Solder
3. C.
   Brass and Bronze
4. D.
   Solder and Bronze

Tap an option to check your answer.

1. A.
   Impure copper, pure copper, acidified copper sulphate solution
2. B.
   Pure copper, impure copper, sulphuric acid
3. C.
   Pure copper, impure copper, acidified copper sulphate solution
4. D.
   Impure copper, pure copper, distilled water

Tap an option to check your answer.

1. A.
   Gold and silver
2. B.
   Calcium and magnesium
3. C.
   Aluminium and silver
4. D.
   Sodium and iron

Tap an option to check your answer.

1. A.
   Diagram (A) as printed - an electron-dot scheme for the formation of magnesium oxide; see the attached figure.
2. B.
   Diagram (B) as printed - an electron-dot scheme for the formation of magnesium oxide; see the attached figure.
3. C.
   Diagram (C) as printed - an electron-dot scheme for the formation of magnesium oxide; see the attached figure.
4. D.
   Diagram (D) as printed - an electron-dot scheme for the formation of magnesium oxide; see the attached figure.

Tap an option to check your answer.

1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

Tap an option to check your answer.

1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

Tap an option to check your answer.

1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

Tap an option to check your answer.

1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

Tap an option to check your answer.

1. A.
   1
2. B.
   2
3. C.
   3
4. D.
   4

Tap an option to check your answer.

1. A.
   Bromine and Mercury
2. B.
   Mercury and Iodine
3. C.
   Mercury and Bromine
4. D.
   Iodine and Mercury

Tap an option to check your answer.

1. A.
   $\mathrm{CuO}$
2. B.
   $\mathrm{Al_2O_3}$
3. C.
   $\mathrm{Na_2O}$
4. D.
   $\mathrm{K_2O}$

Tap an option to check your answer.

1. A.
   Gold and platinum
2. B.
   Platinum and silver
3. C.
   Copper and silver
4. D.
   Gold and silver

Tap an option to check your answer.

1. A.
   Nichrome
2. B.
   Brass
3. C.
   Constantan
4. D.
   Bronze

Tap an option to check your answer.

1. A.
   $\mathrm{Mn, MnO_2}$
2. B.
   $\mathrm{Al, Al_2O_3}$
3. C.
   $\mathrm{Fe, Fe_2O_3}$
4. D.
   $\mathrm{Mg, MgO}$

Tap an option to check your answer.

1. A.
   (a) and (b)
2. B.
   (b) and (c)
3. C.
   (c) and (d)
4. D.
   (b) and (d)

Tap an option to check your answer.

1. A.
   acidic
2. B.
   basic
3. C.
   amphoteric
4. D.
   neutral

Tap an option to check your answer.

1. A.
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B.
   Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. C.
   (A) is true, but (R) is false.
4. D.
   (A) is false, but (R) is true.

Tap an option to check your answer.

1. A.
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B.
   Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. C.
   (A) is true, but (R) is false.
4. D.
   (A) is false, but (R) is true.

Tap an option to check your answer.

1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

Tap an option to check your answer.

1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

Tap an option to check your answer.

1. A.
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B.
   Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. C.
   (A) is true, but (R) is false.
4. D.
   (A) is false, but (R) is true.

Tap an option to check your answer.

1. A.
   I and II
2. B.
   II and III
3. C.
   III and IV
4. D.
   I and IV

Tap an option to check your answer.

1. A.
   Malleability
2. B.
   High melting point
3. C.
   Thermal conductivity
4. D.
   High reactivity

Tap an option to check your answer.

1. A.
   Lithium
2. B.
   Lead
3. C.
   Magnesium
4. D.
   Aluminium

Tap an option to check your answer.

1. A.
   It reacts only with acid and does not form water.
2. B.
   It reacts with acid as well as base to form salt and hydrogen gas.
3. C.
   It reacts with both acid as well as base to form salt and water.
4. D.
   It reacts only with base and does not form water.

Tap an option to check your answer.

1. A.
   Fe and $\mathrm{Fe_2O_3}$
2. B.
   Al and $\mathrm{Al_2O_3}$
3. C.
   Fe and $\mathrm{Fe_3O_4}$
4. D.
   Al and $\mathrm{Al_3O_4}$

Tap an option to check your answer.

1. A.
   1, 2 or 3
2. B.
   3, 4 or 5
3. C.
   5, 6 or 7
4. D.
   5, 6 or 8

Tap an option to check your answer.

1. A.
   The impure metal from the anode dissolves into the electrolyte.
2. B.
   The pure metal from the electrolyte is deposited on the cathode.
3. C.
   Insoluble impurities settle down at the bottom of the anode.
4. D.
   On passing the current through the electrolyte, the pure metal from the anode dissolves into the electrolyte.

Tap an option to check your answer.

1. A.
   Copper and Zinc
2. B.
   Aluminium and Tin
3. C.
   Copper, Tin and Zinc
4. D.
   Copper and Tin

Tap an option to check your answer.

1. A.
   Copper
2. B.
   Iron
3. C.
   Gold
4. D.
   Silver

Tap an option to check your answer.

1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

Tap an option to check your answer.

1. A.
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B.
   Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. C.
   (A) is true, but (R) is false.
4. D.
   (A) is false, but (R) is true.

Tap an option to check your answer.

1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
2. B.
   Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

Tap an option to check your answer.

1. A.
   Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of (A).
2. B.
   Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of (A).
3. C.
   Assertion (A) is true, but Reason (R) is false.
4. D.
   Assertion (A) is false, but Reason (R) is true.

Tap an option to check your answer.