Telegram group: T.me/BBCNOUN
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CHM192
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1. What is the volume of nickel 0.56 kg with density of 8.90 g/cm?

	      72.90 cm

	--->> 62.90cm

	      51.60cm

	      70.20cm

2. What is the colour of phenolphthalein end point for standardization of NaOH solution?

	      red

	      colourless

	--->> light pink

	      purple

3. Which of the solvent has problem of fumes and explosions?

	--->> ethyl ether

	      chloroform

	      n- hexane

	      n-butane

4. The total number of dipole-dipole is increased by?

	      less polar element in the molecue

	--->> more polar element in the molecule

	      more non-polar element in the molecule

	      less n0n-polar element in the molecule

5. The solution can be stirred in order to promote?

	      fast boiling

	      strong boiling

	--->> smooth boiling

	      quick boiling

6. Molecules of compounds that exist in the liquid state are relatively--?

	      far apart

	      not the same

	--->> close together

	      move around each other

7. What method is used in determination of boiling point if the volume of the liquid is small?

	      macro method

	--->> micro method

	      normal method

	      boiling point method

8. Atmospheric pressure is designated by ?

	      atmospheric pressure

	      Pa

	--->> Patm

	      P

9. For each 10 mmHg change in pressure, te boiling point will change approximately by?

	      1.0 oC

	--->> 0.5oC

	      5oC

	      -0.5oC

10. A number and scale or unit is called?

	      fractions

	      integers

	--->> measurement

	      pH scale