1000 Best General Science MCQ-Questions
Q169). 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
Correct Answer:
Arsenous oxide
Explanation:
Q170). Which of the following is a protein?
a).Natural rubber
b).Starch
c).Cellulose
d).None of these
Correct Answer:
Natural rubber
Explanation:
Q171). Wood is the main raw material for the manufacture of
a).paint
b).paper
c).ink
d).gun powder
Correct Answer:
paper
Explanation:
Q172). Rayon is chemically
a).cellulose
b).pectin
c).glucose
d).amylase
Correct Answer:
cellulose
Explanation:
Q173). Optic fibres are mainly used for which of the following?
a).Musical instruments
b).Food industry
c).Weaving
d).Communication
Correct Answer:
Communication
Explanation:
Q174). The major ingredient of leather is
a).collagen
b).carbohydrate
c).polymer
d).nucleic acid
Correct Answer:
collagen
Explanation:
Q175). 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
Correct Answer:
Sodium or potassium salts of heavier fatty acids
Explanation:
Q176). 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
Correct Answer:
By decreasing solubility of Soap
Explanation: