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Question 1:

Which of the following coal has the highest calorific value?

Question 2:

Arrange the following in the increasing order of calorific value?

Question 3:

Fire is extinguished by the following methods?

  1. By spraying carbon dioxide
  2. By spraying carbon tetrachloride
  3. By spraying kerosene
  4. By spraying alcohol

Question 4:

Which of the following fuel is used for industrial heating and for maintaining an inert reducing atmosphere in reaction vessels?

Question 5:

In which of the following soap is rosin added ?

Question 6:

Which one of the following is the best example of desiccant?

Question 7:

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

Question 8:

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

Question 9:

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

Question 10:

Malachite is used as a pigments in paints to obtain