Sample Test Science

1
Which of the following is not characteristic of solid:
  • 1 High Rigidity
  • 2 Regular Shape
  • 3 High density
  • 4 High compressibility
2
The boiling point of water is:
  • 1 1010 C at atmospheric pressure
  • 2 273K at atmospheric pressure
  • 3 00 C at atmospheric pressure
  • 4 0K at atmospheric pressure
3
Which of the following has highest intermolecular forces of attraction?
  • 1 Water at room temperature
  • 2 CO2 gas
  • 3 Ethyl alcohol
  • 4 Iron metal
4
Which of the following substances will undergo sublimation?
  • 1 Common salt
  • 2 Odonil
  • 3 Sugar
  • 4 Sand
5
The process of evaporation causes:
  • 1 Cooling
  • 2 Heating
  • 3 Dryness
  • 4 None of the above
6
The conversion of solid to gas directly is called:
  • 1 Evaporation
  • 2 Sublimation
  • 3 Distillation
  • 4 condensation
7
mixture of oil and water can be separated by:
  • 1 Sublimation
  • 2 Crystallisation
  • 3 Chromatography
  • 4 Separating funnel
8
Na+ has 12 neutrons and 10 electrons. Which of the following statements is correct?
  • 1 Na+ has atomic number 10 and mass number 22.
  • 2 Na+ has atomic number 11 and mass number 23.
  • 3 Na+ has atomic number 10 and mass number 23.
  • 4 Na+ has atomic number 11 and mass number 22.
9
Which of the following statement is correct about proton?
  • 1 It is the nucleus of deuterium
  • 2 It is an ionized hydrogen molecule
  • 3 It is an ionized Hydrogen atom
  • 4 It is an α particle with unit positive charge
10
  • 1 N2
  • 2 H2
  • 3 He
  • 4 Ar

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