Material Science GK Questions with Answers - ObjectiveBooks

Material Science GK Questions with Answers

GK Practice Test: Question Set - 08

1. Which of the following is used for removing air bubbles from glass during its manufacture?
    (A) Arsenous oxide
    (B) Potassium carbonate
    (C) Soda ash
    (D) Feldspar

2. Optic fibres are mainly used for which of the following?
    (A) Musical instruments
    (B) Food industry
    (C) Weaving
    (D) Communication

3. In vulcanization, natural rubber is heated with
    (A) Carbon
    (B) Silicon
    (C) Sulphur
    (D) Phosphorous

4. Paper is manufactured by
    (A) Wood and resin
    (B) Wood, sodium and bleaching powder
    (C) Wood, calcium, hydrogen sulphite and resin
    (D) Wood and bleaching powder

5. Which type of fire extinguisher is used for petroleum fire?
    (A) Powder type
    (B) Liquid type
    (C) Soda acid type
    (D) Foam type

6. Which of the following is a protein?
    (A) Natural rubber
    (B) Starch
    (C) Cellulose
    (D) None of these

7. How does common salt help in separating soap from the solution after saponification?
    (A) By decreasing density of Soap
    (B) By decreasing solubility of Soap
    (C) By increasing density of Soap
    (D) By increasing solubility of Soap

8. Glass is made of the mixture of
    (A) Quartz and mica
    (B) Sand and silicates
    (C) Salt and quartz
    (D) Sand and salt

9. The type of glass used in making lenses and prisms is
    (A) Jena glass
    (B) Soft glass
    (C) Pyrex glass
    (D) Flint glass

10. Deep blue colour is imparted to glass by the presence of
    (A) Cupric oxide
    (B) Nickel oxide
    (C) Cobalt oxide
    (D) Iron oxide

11. The major ingredient of leather is
    (A) Collagen
    (B) Carbohydrate
    (C) Polymer
    (D) Nucleic acid

12. What are the soaps?
    (A) Salts of silicates
    (B) Mixture of glycerol and alcohols
    (C) Sodium or potassium salts of heavier fatty acids
    (D) Esters of heavy fatty acids

13. The vast resources of utilized natural gas can be used in the production of
    (A) Graphite
    (B) Synthetic petroleum
    (C) Fertilizers
    (D) Carbide

14. Rayon is chemically
    (A) Cellulose
    (B) Pectin
    (C) Glucose
    (D) Amylase

15. Soap is a mixture of sodium or potassium salts of
    (A) Dicarboxylic acids
    (B) Monocarboxylic acids
    (C) Glycerol
    (D) Tricarboxylic acids

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