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Water drops are spherical because of ?

  • viscosity
  • density
  • polarity
  • surface tension

Answer: Option D

Similar Questions :

1. Who proposed first atomic theory ?

  • E.Rutherford
  • De Broglie
  • John Dalton
  • D.I.Mendeleef

Answer: Option C

2. Elements that show the properties of both metals and non metals are called ?

  • metalloids
  • allotropes
  • alloys
  • colloids

Answer: Option A

3. Rare gases are

  • mono atomic
  • di atomic
  • tri atomic
  • None of above

Answer: Option A

Explanation:

Rare gases are mono atomic.

4. The most abundant element in the earth's crust is ?

  • Aluminium
  • Nitrogen
  • Silicon
  • Oxygen

Answer: Option D

5. A catalyst is a substance which

  • increases the activation energy
  • increases the rate of reaction and increases the equilibrium concentration of products
  • changes the equilibrium of a reaction so that the concentration of the product increases
  • hastens the attainment of equilibrium

Answer: Option D

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