Tag: science & technology

Questions Related to science & technology

Which of the following is not a first order reaction.
general knowledge science & technology

  1. H2O2 => H2O + 0.5 O2

  2. SO2Cl2 => SO2 + Cl2

  3. 2 N2O2 => 4 NO2 + O2

  4. 2 NO2 => 2 NO + O2

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Correct Option: C

What is the full form of RDX.
general knowledge science & technology

  1. Research Developed Explosive

  2. Rogue-state Demolition Explosive

  3. Revenue Development Explosive

  4. Researched Demolition Explosive

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Correct Option: A

What is the energy density of petrol.
general knowledge science & technology

  1. 10 MJ/kg

  2. 25 MJ/kg

  3. 45 MJ/kg

  4. 120 MJ/kg

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Correct Option: C

What is the flame velocity of methane air mixture.
general knowledge science & technology

  1. 10 cm/s

  2. 40 cm/s

  3. 1 m/s

  4. 4 m/s

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Correct Option: B

What is the amount of energy release rate in a candle.
general knowledge science & technology

  1. 15 W

  2. 45 W

  3. 75 W

  4. 150 W

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Correct Option: A

What is the typical amount of energy required to ignite a match stick.
general knowledge science & technology

  1. 0.4 J

  2. 4 J

  3. 0.04 J

  4. 0.004 J

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Correct Option: D

What is the lower flammability limit (% vol/vol) of hydrogen in air.
general knowledge science & technology

  1. 0.4

  2. 3

  3. 4

  4. 8

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Correct Option: C

Which of the following can not be called a combustion process.
general knowledge science & technology

  1. CH4 + 2 O2 => CO2 + 2H2O

  2. 2H2 + O2 => 2H2O

  3. CH2S + 6F2 => CF4 + 2HF + SF6

  4. NaCl + AgNO3 => NaNO3 + AgCl

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Correct Option: D

What is the typical temperature achieved in an oxy-acetylene torch.
general knowledge science & technology

  1. 1000 C

  2. 2000 C

  3. 3000 C

  4. 5000 C

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Correct Option: C

What is the typical duration for which a spark releases energy in a car engine.
general knowledge science & technology

  1. 2 ms

  2. 0.5 ms

  3. 10 ms

  4. 25 ms

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Correct Option: A