- 1. Metals are elements whose atoms ionize by electron _________
A) gain
B) atom
C) ion
D) lose
- 2. Non-metals are elements whose atoms ionize by electron ________
A) element
B) gain
C) atom
D) lose
- 3. _________ is a liquid metal at room temperature with a melting point of -39ᵒc
A) Diamond
B) Mercury
C) Element
D) Metal
- 4. Metals are _______ agents because they tend to donate their electrons readily during chemical reactions.
A) reducing
B) combining
C) oxidizing
D) producing
- 5. The positive ions enter into chemical combinations with negative ions or radicals to form _______ compounds.
A) ionization
B) ionize
C) covalent
D) electrovalent
- 6. _________ of metals is the process by which metals are isolated from their ore.
A) Extraction
B) Property
C) Ionisation
D) Chemical
- 7. During electrolysis, the ________ acts as a reducing agent by supplying electrons to the metallic ions in the electrolyte, resulting in the deposition of the free metal.
A) Electrode
B) Anode
C) Cathode
D) Cataion
- 8. 8.
What is the element that ionise to form positive ions by losing electrons____ → Na+ + e-
A) K
B) AL
C) Ca
D) Na
- 9. Sodium and ________ are light, soft metals with low melting point of 97ᵒc and 63ᵒc.
A) Chlorine
B) Calcium
C) Ion
D) Potassium
A) Ca0H2
B) CaC03
C) Ca2+(OH-)2(aq)
D) Ca2HC03
- 11. At the cathode, the _________ ions receive an electron, each to become metallic sodium.
A) Sodium
B) Calcium
C) Chlorine
D) Ion
- 12. At the anode, the _______ ions give up an electron each to become chlorine atom which then pair up to form gaseous chlorine molecules.
A) Iron
B) Chloride
C) Water
D) Sodium
- 13. _______ forms ionic compounds with high melting points. These compounds are water soluble and mostly white.
A) Calcium
B) Oxygen
C) Iron
D) Sodium
- 14. Ethanoic acid reacts reversibly with alkanol to form ______
A) Sugar
B) Ester
C) Fat
D) Liquid
- 15. When an alkanol reacts with a carboxylic acid, an ester and water are formed, this reaction is called an ______ reaction.
A) Oxidation
B) Esterification
C) Reduction
D) Endothermic
- 16. Fats and oil belong to a group of compound known as _______
A) Soaps
B) Lipids
C) Animals
D) Sugar
- 17. In formation of soap, the general process of alkaline hydrolysis of esters by which soap is obtained is called _________
A) Esterification
B) Glucose
C) Saponification
D) Fatty acid
- 18. Fats are ________ and of animal origin.
A) Solid
B) Plants
C) Liquid
D) Temperature
- 19. Oils are __________ mainly from plants and room temperature.
A) Liquid
B) Solid
C) Fluid
D) Water
- 20. The last product of lipid is ______
A) Ester
B) Fatty acid
C) Amino acid
D) Glucose
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