Chemistry MCQS

351. Which of the following illustrates ion-dipole forces?
A. Sugar dissolved in water
B. Table salt dissolved in water
C. Bromine dissolved in water
D. Alcohol added to water

352. Evaporation depends upon:
A. T
B. IMF
C. Surface area
D. All of these

353. What is the most abundant noble gas in the Earth’s atmosphere?
a) Helium
b) Neon
c) Argon
d) Krypton

354. Which noble gas is used in balloons to make them float?
a) Helium
b) Neon
c) Argon
d) Xenon

355. Which noble gas is used in neon signs?
a) Helium
b) Neon
c) Argon
d) Krypton

356. Which noble gas is used in photographic flashes?
a) Helium
b) Neon
c) Argon
d) Xenon

357. Which noble gas is used in some types of lasers?
a) Helium
b) Neon
c) Argon
d) Krypton

358. Noble gases have _ boiling points and _ melting points.
a) High, high
b) High, low
c) Low, high
d) Low, low

359. What is the boiling point of helium in Celsius?
a) -269°C
b) -196°C
c) -162°C
d) -112°C

360. What is the boiling point of neon in Celsius?
a) -269°C
b) -196°C
c) -162°C
d) -112°C