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4311

Carbon is deposited in the exhaust pipes of cars because of

  • A. presence of additives in petrol
  • B. incomplete combustion of petrol
  • C. presence of carbon in petrol
  • D. contamination of petrol with diesel
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4312

Which of the following laws or theory cannot be explained by the application of the kinetic theory of gases?

  • A. Dalton's atomic theory
  • B. Charle's law
  • C. Boyle's law
  • D. Gay- Lussac's law
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4313

How many unpaired electrons are present in \(_{26}Fe^{3+}\)?

  • A. 4
  • B. 2
  • C. 3
  • D. 5
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4314

A consequence of global warming is

  • A. air pollution
  • B. High Humidity
  • C. flooding
  • D. Water pollution
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4315

Going down group II in the periodic table normally

  • A. ionization energy increases
  • B. melting point increases
  • C. shielding effect decreases
  • D. electronegativity increases
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