NDA CHEMISTRY QUIZ - 36

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Question 1:

Which of the following metal is used for decorative electroplating?

Question 2:

Soaps are _____________ based soapy detergents.

Question 3:

For hard soaps , which of the following solution is used in the saponification of fats or oils?

Question 4:

Soft soaps are the limitation of hot process because of their ____________

Question 5:

Detergents are synthetic soaps like cleansing agents and are also known as ____________

Question 6:

Which of the following detergent is used in toothpaste and in washing clothes?

Question 7:

Which of the following statements are correct?

  1. Synthetic detergents can be used in hard water.
  2. Synthetic detergents can be used in acidic medium.
  3. Synthetic detergents are more soluble in water than soaps.
  4. All synthetic detergents are biodegradable in nature.

Question 8:

Which one among the following is the major constituent of Pyrex glass?

Question 9:

The residue that left in the destructive distillation of coal and used as a reducing agent in the extraction of metals is

Question 10:

Which of the following variety of coal has carbon content more than of peat?

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