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1009 available questions

Chemistry · Question 111

An orbital can accommodate at the most _____________electrons.

  1. 2
  2. 14
  3. 1
  4. 6
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Correct answer: C

1

Chemistry · Question 112

The isomers of a substance must have:

  1. Same molecular mass
  2. Same chemical properties
  3. Same structural formula
  4. Same functional group
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Correct answer: A

Same molecular mass

Chemistry · Question 113

The sum of all the energies of all the molecules or atoms of a substance is called its:

  1. Specific heat
  2. Heat capacity
  3. Latent heat
  4. Internal energy
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Correct answer: D

Internal energy

Chemistry · Question 114

According to Le chatelier's Principel Exothermic reactions are favored by:

  1. increase in Pressure
  2. Increase in Volume
  3. decrease in Temperature
  4. All of these
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Correct answer: C

decrease in Temperature

Chemistry · Question 115

The study of crystalline solids determines the:

  1. mole
  2. Avogadro's number
  3. atomic mass
  4. atomic number
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Correct answer: B

Avogadro's number

Chemistry · Question 116

With different number of moles of reactants and product the volume of system

  1. Remains unchanged
  2. changes
  3. decrease
  4. increase
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Correct answer: B

changes

Chemistry · Question 117

The stronger the reduction potential the more difficult it is to:

  1. Reduce the compound
  2. Oxidize the compound
  3. Electrolyze the compound
  4. Neither reduce nor oxidize the compound
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Correct answer: A

Reduce the compound

Chemistry · Question 118

The e/m values for the positive rays depends on ____________ enclosed in a discharge tube.

  1. nature of gas
  2. properties of gas
  3. composition of gas
  4. all of these
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Correct answer: A

nature of gas

Chemistry · Question 119

Which compound reacts most rapidly by an Sql mechanism?

  1. Chloromethane
  2. 1- Chloromethane
  3. 2-chloro-2-methylpropane
  4. 2- chloropropane
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Correct answer: B

1- Chloromethane

Chemistry · Question 120

Phenol reacts with calcium carbonation and evolve_____________________

  1. H2 gas
  2. CO2 gas
  3. O2
  4. None of these
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Correct answer: D

None of these