Which of the following will cause an increase in the rate of evaporation of a liquid? MCQ with Answer and Explanation

Which of the following will cause an increase in the rate of evaporation of a liquid?
A. Increase in surface area
B. Decrease in wind speed
C. Decrease in temperature
D. Increase in humidity
Answer: Option A
Solution (By JKSSB Mock Tests)
Evaporation increases with an increase in surface area, temperature, and wind speed, and decreases with an increase in humidity. A larger surface area allows more liquid molecules to be exposed to the air, enabling them to escape into the vapor phase more quickly, thus increasing the rate of evaporation.

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Practice More chemistry Questions

Question #1
Which of the following is an example of oxidation?
A. Cl₂ + 2e⁻ → 2Cl⁻
B. Cu²⁺ + 2e⁻ → Cu
C. Na → Na⁺ + e⁻
D. 2H⁺ + 2e⁻ → H₂

Correct Answer: Option C


Explanation:
Oxidation is loss of electrons. Na loses an electron to become Na⁺, so it is oxidized. Options A, C, D involve gain of electrons (reduction). Oxidation also can be defined as gain of oxygen or loss of hydrogen. In the reaction, Na acts as reducing agent. Mnemonic: LEO (Loss of Electrons is Oxidation) GER (Gain of Electrons is Reduction).

This question belongs to: Science chemistry
Question #2
Isotopes of an element have:
A. Same atomic number, different mass number
B. Same number of neutrons
C. Same mass number, different atomic number
D. Same physical properties

Correct Answer: Option A


Explanation:
Isotopes are atoms of the same element (same atomic number, same number of protons) but different mass numbers due to varying number of neutrons. For example, ¹²C, ¹³C, ¹⁴C. Their chemical properties are similar but physical properties (mass, density, rate of diffusion) differ. Isobars have same mass number but different atomic numbers.

This question belongs to: Science chemistry
Question #3
The compound CH₃CH₂OH is commonly known as:
A. Butanol
B. Propanol
C. Methanol
D. Ethanol

Correct Answer: Option D


Explanation:
CH₃CH₂OH is ethyl alcohol or ethanol. Methanol is CH₃OH. Propanol C₃H₇OH. Butanol C₄H₉OH. Ethanol is the active ingredient in alcoholic beverages and used as biofuel.

This question belongs to: Science chemistry