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SCIENCE FUNDAMENTALS MCQs

General Science Mixed, Science, Fundamentals Vectors

Total Questions : 736 | Page 7 of 74 pages
Question 61. Which of the following is a protein?
  1.    Natural rubber
  2.    Starch
  3.    Cellulose
  4.    None of these
 Discuss Question
Answer: Option A. -> Natural rubber
Question 62. Wood is the main raw material for the manufacture of
  1.    Paint
  2.    Paper
  3.    Ink
  4.    Gun powder
 Discuss Question
Answer: Option B. -> Paper
Question 63. Rayon is chemically a
  1.    Cellulose
  2.    Pectin
  3.    Glucose
  4.    Amylase
 Discuss Question
Answer: Option A. -> Cellulose
Question 64. Optical fibers are mainly used for which of the following?
  1.    Musical instruments
  2.    Food industry
  3.    Weaving
  4.    Communication
 Discuss Question
Answer: Option D. -> Communication
Question 65. The major ingredient of leather is:
  1.    Collagen
  2.    Carbohydrate
  3.    Polymer
  4.    Nucleic acid
 Discuss Question
Answer: Option A. -> Collagen
Question 66. What are the soaps?
  1.    Salts of silicates
  2.    Mixture of glycerol and alcohols
  3.    Sodium or potassium salts of heavier fatty acids
  4.    Esters of heavy fatty acids
 Discuss Question
Answer: Option C. -> Sodium or potassium salts of heavier fatty acids
Question 67. How does common salt help in separating soap from the solution after saponification?
  1.    By decreasing density of Soap
  2.    By decreasing solubility of Soap
  3.    By increasing density of Soap
  4.    By increasing solubility of Soap
 Discuss Question
Answer: Option B. -> By decreasing solubility of Soap
Question 68. In vulcanisation, natural rubber is heated with
  1.    Carbon
  2.    Silicon
  3.    Sulphur
  4.    Phosphorous
 Discuss Question
Answer: Option C. -> Sulphur
Question 69. Deep blue colour is imparted to glass by the presence of
  1.    Cupric oxide
  2.    Nickel oxide
  3.    Cobalt oxide
  4.    Iron oxide
 Discuss Question
Answer: Option C. -> Cobalt oxide
Question 70. Glass is made of the mixture of:
  1.    Quartz and mica
  2.    Sand and silicates
  3.    Salt and quartz
  4.    Sand and salt
 Discuss Question
Answer: Option B. -> Sand and silicates

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