www.ThinkITI.com

Home
MCQ
Search
Free Apps
Important
Study Groups
Contact Us
Policy

Home
MCQ
Objective Questions
GS
GS Set-1
Chemistry
Physical Chemistry
144

Physical Chemistry MCQ with Answers

144) If a thin slice of suger beet is placed in concentrated solution of NaCl, then:

Sugar beet will lose water from its cells

Sugar beet will absorb water from solution

Sugar beet will neither absorb nor lose water

Sugar beet will dissolve in solution

Answer is:

Sugar beet will lose water from its cells

Explanation:

Osmosis occurs from dilute solutions to concentrated solutions, i.e. exo−osmosis.

Physical Chemistry MCQ with Answers

For more MCQ's Click Here

145) Pure benzene freezes at 5.3^oC. A solution of 0.223 gm of phenylacetic acid in 4.4 gm of benzene (K_f = 5.12 K kg⁄mol) freezes at 4.47^oC. From this observation, one can conclude that:

Phenylacetic acid exists as such in benzene

Phenylacetic acid undergoes partial ionization in benzene

Phenylacetic acid undergoes complete ionization in benzene

Phenylacetic acid dimerizes in benzene

Answer is:

Phenylacetic acid dimerizes in benzene

146) Human blood has an osmotic pressure of 7.65 atm at body temperature. Hence, molarity of an intravenous glucose solution to have same osmotic pressure, will be:

0.3M

0.1M

0.5M

0.2M

Answer is:

0.3M

Explanation:

πV = nRT

147) A supersaturated solution is a metastable state of solution in which solute concentration:

Is equal to the solubility of that substance in water

Exceeds its solubility

Less than its solubility

Continuously changes

Answer is:

Exceeds its solubility

148) If an aqueous solution of glucose is allowed to freeze, then crystals of which will separate out first?

Glucose

Water

Both of these

None of these

Answer is:

Water

Explanation:

As the solute is solid, then solvent (water) will freeze out.

Physical Chemistry MCQ with Answers

For more MCQ's Click Here

144) If a thin slice of suger beet is placed in concentrated solution of NaCl, then:

Sugar beet will lose water from its cells

Physical Chemistry MCQ with Answers

Related Physical Chemistry MCQ with Answers

145) Pure benzene freezes at 5.3oC. A solution of 0.223 gm of phenylacetic acid in 4.4 gm of benzene (Kf = 5.12 K kg⁄mol) freezes at 4.47oC. From this observation, one can conclude that:

Phenylacetic acid dimerizes in benzene

146) Human blood has an osmotic pressure of 7.65 atm at body temperature. Hence, molarity of an intravenous glucose solution to have same osmotic pressure, will be:

0.3M

147) A supersaturated solution is a metastable state of solution in which solute concentration:

Exceeds its solubility

148) If an aqueous solution of glucose is allowed to freeze, then crystals of which will separate out first?

Water

Physical Chemistry MCQ with Answers

145) Pure benzene freezes at 5.3^oC. A solution of 0.223 gm of phenylacetic acid in 4.4 gm of benzene (K_f = 5.12 K kg⁄mol) freezes at 4.47^oC. From this observation, one can conclude that: