Chemistry
Give one example for each of the following :
(a) An oxide which gives salts both with an acid and a base.
(b) An oxide which does not change the colour of indicators.
(c) A neutral oxide which is a universal solvent.
(d) An oxide which produces salt and water with an acid.
(e) A soluble metallic oxide which produces an alkali.
Chemical Reaction
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Answer
(a) Zinc Oxide (ZnO)
(b) Carbon monoxide (CO)
(c) Water (H₂O)
(d) Calcium Oxide (CaO)
(e) Sodium Oxide (Na2O)
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Related Questions
Match the following :
Column A Column B (a) It changes the rate of a chemical reaction (i) Photosynthesis (b) Attractive force between the atoms to form molecules (ii) Amphoteric oxide (c) Oxides of non-metals (iii) Catalyst (d) Lead monoxide (iv) Chemical bond (e) Light energy (v) Acidic oxides Name the following :
(a) The substances formed due to a chemical reaction.
(b) An insoluble solid produced when two substances in solution form are mixed together.
(c) The compounds formed by the reaction between oxygen and any other element.
(d) The chemical reactions in which energy is released.
(e) A chemical reaction in which a substance breaks to give two or more simpler substances.
Classify the following reactions as combination, decomposition, displacement, precipitation and neutralization. Also balance the equations.
(a) CaCO3 (s) CaO (s) + CO2 (g)
(b) Zn(s) + H2SO4 ⟶ ZnSO4 (s) + H2 (g)
(c) AgNO3 (aq) + NaCl (aq) ⟶ AgCl(s) + NaNO3
(d) NH3 (g) + HCl (g) ⟶ NH4Cl (s)
(e) CuSO4 (aq) + H2S (g) ⟶ CuS (s) + H2SO4 (l)
(f) Zn (s) + CuSO4 (aq) ⟶ ZnSO4 (aq) + Cu(s)
(g) Ca(s) + O2 (g) ⟶ CaO(s)
(h) NaOH + HCl ⟶ NaCl + H2O
(i) KOH + H2SO4 ⟶ K2SO4 + H2O
Write the missing reactants and products and balance the equations:
(a) NaOH + …………… ⟶ NaCl + …………….
(b) KClO3 …………….. + ……………….
(c) …………. + HCl ⟶ NaCl + H2O + ……………..