Lakshya Education MCQs

Question: Which is the main reducing agent during production of iron from iron ore in a blast furnace?
Answer: Option B

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Question 1. Which of the following is a constituent of vinegar?
  1.    Around 10% alcohol
  2.    Around 1% acetic acid
  3.    Both A and B
  4.    Neither A nor B
Answer: Option C
Question 2. The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an __________ detergent.
  1.    Cationic
  2.    Anionic
  3.    Amphoteric
  4.    Semi polar
Answer: Option B
Question 3. __________ acid is an unsaturated fatty acid.
  1.    Palmitic
  2.    Oleic
  3.    Stearic
  4.    Oxalic
Answer: Option B
Question 4. Rotary kiln is not involved in the production of
  1.    Cement
  2.    Lime from limestone
  3.    Slaked lime from quick lime
  4.    None of these
Answer: Option C
Question 5. __________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.
  1.    Pyrex
  2.    Soda lime
  3.    Lead
  4.    High silica
Answer: Option A
Question 6. The ideal pulp for the manufacture of paper should have high __________ content.
  1.    Cellulose
  2.    Lignin
  3.    Both A & B
  4.    None of these
Answer: Option A

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