Lakshya Education MCQs

Question: The 'laughing gas' is
Options:
A.Nitrous oxide
B.Nitric oxide
C.Nitrogen trioxide
D.Nitrogen pentoxide
Answer: Option A

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More Questions on This Topic :

Question 1. Pick out the wrong statement.
  1.    Complete unity of command exists in a line organisation
  2.    Line organisation is net suitable for expansion and growth of an industry
  3.    In line and staff organisation, "line" executes and "staff directs
  4.    None of these
Answer: Option D
Question 2. Out of the following, __________ pipe is the least corrosion resistant.
  1.    Mild steel
  2.    Copper
  3.    Wrought iron
  4.    Stainless steel
Answer: Option C
Question 3. Out of the following, the most melleable material is
  1.    Copper
  2.    Aluminium
  3.    Wrought iron
  4.    Lead
Answer: Option D
Question 4. Which of the following is a weak acid?
  1.    HF
  2.    HCl
  3.    HI
  4.    HBr
Answer: Option A
Question 5. The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the
  1.    Final control element
  2.    On-off control
  3.    Floating control action
  4.    None of these
Answer: Option A
Question 6. Otto cycle used in spark ignition petrol engines is also known as the constant __________ cycle.
  1.    Volume
  2.    Pressure
  3.    Heat
  4.    None of these
Answer: Option A

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